For most boat owners, I’d start with the FILTERUP 1100 GPH Automatic Bilge Pump Kit, which pairs automatic operation with a practical midrange capacity. The Rule 2000 GPH Non-Automatic Pump suits buyers who want a higher-capacity pump and already have a separate switch, while the SEAFLO 06 Series 1100 GPH stands out for its built-in float switch and snap-off strainer. The main choice is between automatic convenience and a simpler pump that relies on a separate control, as well as between compact lower-capacity options and larger pumps that draw more electrical current. Rated flow alone does not predict real-world removal: hose size, lift, wiring, and installation all affect performance. Read on for how these 15 marine bilge pumps compare and which one fits your boat and setup.
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Key Takeaways
- Automatic operation is the clearest dividing line: several options, including the FILTERUP 1100 GPH kit and SEAFLO 06 Series models, have automatic controls, while the Rule 2000 GPH and MAXZONE 1100 GPH non-automatic pumps need a separate switching setup.
- The 1100 GPH models offer the broadest middle ground in this lineup: they avoid the lowest listed capacity while giving buyers more compact choices than the 2000 GPH group.
- Two 2000 GPH pumps do not imply the same installation: the Rule 2000 GPH model is non-automatic, while the NEWMAIX 2000 GPH automatic model includes a built-in float switch.
- Maintenance access varies as much as capacity: the SEAFLO 06 Series 1100 GPH model lists a snap-off strainer, a useful detail for owners who expect to inspect and clear debris regularly.
- Matching the pump to the existing system matters more than choosing the highest rating: outlet dimensions, hose run, lift, electrical capacity, and switch arrangement can make a lower-rated pump the better fit.
| SEAFLO 01 Series 750 GPH 12V Bilge Pump |  | Best Compact Pick | Model number: SFBP1-G750-01 | Voltage: 12V DC | Flow rate: 750 GPH | VIEW LATEST PRICE | See Our Full Breakdown |
| FILTERUP 1100 GPH Automatic 12V Boat Bilge Pump Kit |  | Best Complete Kit | Manufacturer part number: BBWP-12V | Voltage: 12V | Flow rate: 1100 GPH | VIEW LATEST PRICE | See Our Full Breakdown |
| Rule 2000 GPH Non-Automatic 12V Submersible Bilge Pump |  | Best High-Capacity Manual-Control Pick | Voltage: 12V DC | Flow rate: 2000 GPH (33.33 GPM) | Pump type: Non-automatic, submersible | VIEW LATEST PRICE | See Our Full Breakdown |
| NEWMAIX 12V 2000 GPH Automatic Marine Bilge Pump with Built-In Float Switch |  | Best Automatic High-Capacity Pick | Model number: 5201138 | Voltage: 12V | Flow rate: 2000 GPH | VIEW LATEST PRICE | See Our Full Breakdown |
| SEAFLO 01 Series 1500 GPH 12V Bilge Pump |  | Best Mid-Range Capacity Pick | Model number: SFBP1-G1500-01 | Voltage: 12V DC | Flow rate: 1500 GPH (25 GPM) | VIEW LATEST PRICE | See Our Full Breakdown |
| 6699 Automatic Boat Bilge Pump, 12V, 1500 GPH |  | Best High-Capacity Automatic Pick | Flow rate: 1,500 GPH (25 GPM) | Voltage: 12 V | Current: 3.5 A | VIEW LATEST PRICE | See Our Full Breakdown |
| MAXZONE 12V Automatic Bilge Pump, 1100 GPH |  | Best Compact Automatic Option | Flow rate: 1,100 GPH (18.33 GPM) | Voltage: 12 V | Maximum lifting height: 3 m | VIEW LATEST PRICE | See Our Full Breakdown |
| MAXZONE 12V Non-Automatic Marine Bilge Pump, 1100 GPH |  | Best for Manual-Control Installations | Pump style: Non-automatic submersible | Flow rate: 1,100 GPH (18.33 GPM; 5,000 L/hour) | Voltage: 12 V DC | VIEW LATEST PRICE | See Our Full Breakdown |
| Rule 02 1500 GPH 12V Submersible Bilge Pump |  | Best for Bilge and Live-Well Versatility | Flow rate: 1,500 GPH | Voltage: 12 V DC | Type: Non-automatic, fully submersible bilge pump | VIEW LATEST PRICE | See Our Full Breakdown |
| SEAFLO 06 Series Automatic Submersible Bilge Pump, 750 GPH, 12V |  | Best for Smaller Bilges and Easy Cleaning | Flow rate: 750 GPH (12.5 GPM) | Voltage: 12 V DC | Outlet size: 3/4 in (19 mm) | VIEW LATEST PRICE | See Our Full Breakdown |
| SEAFLO 06 Series Automatic Submersible Bilge Pump – 1100 GPH, 12V, 1-1/8″ Outlet, Built-In Float Switch, Snap-Off Strainer, Compact for Marine Boat Yacht, CE & RoHS Certified |  | Best Automatic 1100 GPH Pump | Model: SFBP1-G1100-06 | Flow rate: 1100 GPH (18.33 GPM) | Voltage: 12V DC | VIEW LATEST PRICE | See Our Full Breakdown |
| Subtoy 12V Automatic Marine Bilge Pump Kit, 1100 GPH |  | Best Complete Installation Kit | Model: BBP1112A | Flow rate: Up to 1100 GPH | Voltage: 12V | VIEW LATEST PRICE | See Our Full Breakdown |
| SEAFLO 01 Series 2000 GPH 12V Submersible Bilge Pump |  | Best High-Capacity Switch-Compatible Pump | Model: SFBP1-G2000-01 | Flow rate: 2000 GPH (33.33 GPM) | Voltage: 12V DC | VIEW LATEST PRICE | See Our Full Breakdown |
| NEWMAIX 12V 2000 GPH Non-Automatic Submersible Bilge Pump |  | Best for Manual-Control Installations | Model: 5201042A | Flow rate: 2000 GPH | Voltage: 12V DC | VIEW LATEST PRICE | See Our Full Breakdown |
| 6699 12V 2000 GPH Boat Bilge Pump, BGP 2000 |  | Best for a High-Head Discharge Setup | Model: BGP 2000 | Maximum flow rate: 2000 GPH (33 GPM) | Voltage: 12V | VIEW LATEST PRICE | See Our Full Breakdown |
| marine bilge pump | Voltage | Flow rate | Dimensions | Outlet diameter |
|---|---|---|---|---|
| SEAFLO 01 Series 750 GPH 12V B | 12V DC | 750 GPH | 3.57 × 2.77 × 4.25 in | 3/4 in (19 mm) |
| FILTERUP 1100 GPH Automatic 12 | 12V | 1100 GPH | — | — |
| Rule 2000 GPH Non-Automatic 12 | 12V DC | 2000 GPH (33.33 GPM) | — | — |
| NEWMAIX 12V 2000 GPH Automatic | 12V | 2000 GPH | 18.5 × 16.14 × 9.45 in | — |
| SEAFLO 01 Series 1500 GPH 12V | 12V DC | 1500 GPH (25 GPM) | — | 1-1/8 in (29 mm) |
| 6699 Automatic Boat Bilge Pump | 12 V | 1,500 GPH (25 GPM) | 5.7 × 3.3 × 4.1 in | 1-1/8 in (29 mm) |
| MAXZONE 12V Automatic Bilge Pu | 12 V | 1,100 GPH (18.33 GPM) | 5.71 × 2.95 × 3.94 in | 29 mm (1-1/8 in) |
| MAXZONE 12V Non-Automatic Mari | 12 V DC | 1,100 GPH (18.33 GPM; 5,000 L/hour) | 4.25 × 2.36 × 2.36 in | 1-1/8 in (29 mm) |
| Rule 02 1500 GPH 12V Submersib | 12 V DC | 1,500 GPH | 5.25 × 6 × 4.5 in | — |
| SEAFLO 06 Series Automatic Sub | 12 V DC | 750 GPH (12.5 GPM) | 5.7 × 3.2 × 4 in | — |
| SEAFLO 06 Series Automatic Sub | 12V DC | 1100 GPH (18.33 GPM) | 5.9 x 3.27 x 4.05 in | 1-1/8 in |
| Subtoy 12V Automatic Marine Bi | 12V | Up to 1100 GPH | 5.9 x 3.2 x 4.1 in | — |
| SEAFLO 01 Series 2000 GPH 12V | 12V DC | 2000 GPH (33.33 GPM) | — | 1-1/8 in (29 mm) |
| NEWMAIX 12V 2000 GPH Non-Autom | 12V DC | 2000 GPH | 8.66 x 5.51 x 7.46 in | — |
| 6699 12V 2000 GPH Boat Bilge P | 12V | — | — | 1-1/8 in (29 mm) |
More Details on Our Top Picks
SEAFLO 01 Series 750 GPH 12V Bilge Pump
The SEAFLO 01 Series 750 GPH suits smaller bilge spaces where a larger pump would be awkward and the expected water load is modest. Its anti-airlock protection helps keep water moving rather than letting trapped air interrupt evacuation, while the low listed current draw of 2.5 A is a lighter electrical demand than the 1500 GPH SEAFLO 01 Series. That smaller capacity is the main tradeoff: it is not the choice I’d make as the primary pump for a boat that needs faster water removal. This is also a non-automatic model in the supplied description, so buyers should plan for suitable manual control or a separate float switch. Its compact body and four-year limited warranty make it a sensible fit when space and straightforward installation matter more than high output.
Pros:- Compact dimensions suit confined bilge compartments
- Anti-airlock protection supports continuous water evacuation
- Listed current draw is 2.5 A
- Four-year limited warranty
Cons:- Lower 750 GPH capacity than the other SEAFLO 01 Series pumps in this roundup
- No built-in automatic switch is specified
- Three-foot wire lead may require an extension in some installations
Best for: Owners of small boats with a tight bilge space, modest drainage needs, and an existing switch or float-switch setup.
Not ideal for: Owners seeking automatic operation or higher-capacity primary drainage; its 750 GPH rating is lower than the 1100 and 2000 GPH options here.
- Model number:SFBP1-G750-01
- Voltage:12V DC
- Flow rate:750 GPH
- Outlet diameter:3/4 in (19 mm)
- Maximum head:8.2 ft (2.5 m)
- Current draw:2.5 A; 5.0 A maximum
- Wire lead length:3 ft (1 m)
- Dimensions:3.57 × 2.77 × 4.25 in
- Warranty:4-year limited
Our verdict“Choose this SEAFLO when bilge space is tight and 750 GPH is sufficient, but pick a higher-capacity or automatic model for heavier unattended drainage.”
FILTERUP 1100 GPH Automatic 12V Boat Bilge Pump Kit
The FILTERUP 1100 GPH kit is the convenient choice for a boat owner who wants the pump and basic discharge hardware together. Its built-in reed sensor handles automatic activation without a separate float switch, making it simpler to set up than the non-automatic Rule 2000 GPH. The included six-foot hose, clamps, and thru-hull fitting also reduce the need to source common installation parts separately. Its 1100 GPH rating lands between the compact SEAFLO 750 GPH and higher-output pumps such as the Rule 2000 GPH, so it fits moderate drainage needs rather than maximum-capacity duty. The tradeoffs are its plastic construction and dependence on a 12V supply; buyers should also check the listed dimensions and hose routing against their bilge before installation.
Pros:- Built-in reed sensor provides automatic operation without a separate float switch
- Includes a six-foot hose, two clamps, and a thru-hull fitting
- 1100 GPH capacity exceeds the compact SEAFLO 750 GPH
- Rated IP68 waterproof
Cons:- Plastic construction may not suit buyers seeking a more metal-heavy pump
- Requires a 12V power source
- The supplied data does not list current draw or maximum head
Best for: Small-boat owners who want an automatic 12V pump with hose, clamps, and a thru-hull fitting supplied in one kit.
Not ideal for: Buyers needing a high-capacity pump for a larger vessel, or those prioritizing metal construction over the listed plastic body.
- Manufacturer part number:BBWP-12V
- Voltage:12V
- Flow rate:1100 GPH
- Pump operation:Automatic, built-in reed sensor
- Hose length:6 ft
- Hose diameter:1-1/8 in
- Material:Plastic
- Included components:Pump, hose, two clamps, thru-hull fitting, instructions
Our verdict“Pick the FILTERUP kit for moderate-capacity automatic drainage with common installation parts included, not for the highest output or a metal-bodied build.”
Rule 2000 GPH Non-Automatic 12V Submersible Bilge Pump
For buyers who want high flow with direct control, the Rule 2000 GPH provides substantially more stated capacity than the FILTERUP 1100 GPH automatic kit. Its ignition-protected motor and anti-airlock protection address useful marine operating concerns, while the snap-lock strainer can be removed for cleaning without treating routine maintenance as a major disassembly job. The central compromise is its non-automatic operation: unlike the FILTERUP, it needs a suitable switch or manual control and won’t activate on its own. Its 1-1/8-inch discharge also calls for compatible hose and installation space, so it is less convenient as an all-in-one setup than a kit. I’d favor it for a boat with an established control system and a need for greater pumping capacity, rather than for a buyer seeking the simplest unattended option.
Pros:- 2000 GPH stated flow rate is higher than the 1100 GPH FILTERUP
- Ignition-protected motor
- Anti-airlock protection
- Snap-lock strainer simplifies access for cleaning
Cons:- Non-automatic operation requires separate switching or manual control
- Requires a 12V power source
- 1-1/8-inch discharge needs compatible hose and space
Best for: Boat owners with a compatible switch or control panel who need a high-capacity submersible pump and can provide a separate automatic control if desired.
Not ideal for: Buyers who want a self-activating pump or a kit with discharge hose and fittings included.
- Voltage:12V DC
- Flow rate:2000 GPH (33.33 GPM)
- Pump type:Non-automatic, submersible
- Discharge:1-1/8 in
- Maximum lifting height:2 m
- Lead length:6 ft
- Weight:3.2 lb
- Motor feature:Ignition-protected
- Warranty:3 years
Our verdict“Choose the Rule for high-capacity drainage under existing manual or switched control, but select an automatic pump if unattended activation is the priority.”
NEWMAIX 12V 2000 GPH Automatic Marine Bilge Pump with Built-In Float Switch
The NEWMAIX 2000 GPH pairs a high stated flow rate with a built-in float switch, so it offers automatic operation where the Rule 2000 GPH requires separate control. That makes it a more convenient fit for buyers who want the pump to respond to rising bilge water without adding a separate float switch. Its stainless steel motor shaft adds a corrosion-conscious component, and the product description says it is designed to run dry without burning out. Still, the supplied dimensions are unusually large at 18.5 × 16.14 × 9.45 inches, which could make placement a challenge compared with the smaller SEAFLO 01 Series 1500 GPH. The body is thermoplastic, not metal, and the listed data omits details such as discharge size and current draw, so installation compatibility needs checking before purchase.
Pros:- 2000 GPH stated flow rate
- Built-in float switch enables automatic operation
- Stainless steel motor shaft
- Designed to run dry without burning out
Cons:- Listed dimensions may be difficult to accommodate in compact bilges
- Thermoplastic body is not a metal construction
- Supplied product data does not specify discharge size or current draw
Best for: Owners of boats with room for a larger pump who want 2000 GPH stated capacity and automatic float-switch operation.
Not ideal for: Owners with compact bilges or those who need clearly specified discharge, current-draw, or installation dimensions before choosing a pump.
- Model number:5201138
- Voltage:12V
- Flow rate:2000 GPH
- Pump operation:Automatic, built-in float switch
- Power source:Corded electric
- Materials:Plastic body, stainless steel shaft
- Dimensions:18.5 × 16.14 × 9.45 in
- Specific uses:Marine, boating
Our verdict“Choose the NEWMAIX if you need automatic 2000 GPH-class drainage and have room to verify its large listed dimensions, but favor the Rule for a more clearly specified manual-control installation.”
SEAFLO 01 Series 1500 GPH 12V Bilge Pump
The SEAFLO 01 Series 1500 GPH is a useful middle ground for buyers who need more output than the 750 GPH SEAFLO but don’t want to jump to a 2000 GPH pump. Its anti-airlock protection supports steady evacuation, and the removable strainer makes routine cleaning more straightforward than a fixed intake design. The pump can work with manual control or a float switch, giving the installer flexibility, though the supplied description does not indicate that a float switch is included. That differs from the automatic FILTERUP and NEWMAIX models, which have built-in activation. The tradeoff is electrical demand: its listed maximum draw reaches 12 A, and its three-foot lead may require extra wiring depending on the boat layout. Corrosion-resistant materials and a four-year limited warranty round out a capable, adaptable option.
Pros:- 1500 GPH capacity sits between the 750 GPH SEAFLO and 2000 GPH pumps
- Anti-airlock protection
- Removable strainer eases cleaning
- Corrosion-resistant construction and four-year limited warranty
Cons:- Maximum current draw is 12 A
- Automatic operation requires a float switch that is not listed as included
- Three-foot wire lead may be short for some installations
Best for: Owners seeking more capacity than a 750 GPH pump, with the flexibility to operate through manual control or a separately supplied float switch.
Not ideal for: Buyers who want built-in automatic activation, lower electrical demand, or a complete installation kit with hose and fittings.
- Model number:SFBP1-G1500-01
- Voltage:12V DC
- Flow rate:1500 GPH (25 GPM)
- Outlet diameter:1-1/8 in (29 mm)
- Maximum head:16.4 ft (5 m)
- Current draw:8.0 A; 12.0 A maximum
- Wire lead length:3 ft (1 m)
- Weight:2.5 lb
- Warranty:4-year limited
Our verdict“Choose this SEAFLO for a flexible 1500 GPH installation with a removable strainer, but pick the FILTERUP or NEWMAIX if you need built-in automatic switching.”
6699 Automatic Boat Bilge Pump, 12V, 1500 GPH
The 6699 BGP 1500 pairs a 1,500 GPH rating with an automatic float switch, making it a stronger capacity choice than the SEAFLO 06 Series 750 GPH when a boat needs more water-moving headroom without separate automatic switching hardware. Its switch activates above 1.4 inches of water and stops below 1 inch, while the wiring also allows manual operation. That flexibility suits owners who want automatic routine pumping and a manual option when needed. The tradeoff is that manual mode requires someone to cut power, so it is not hands-off in that setting. The listed package includes a stainless steel clamp but no hose, and buyers need to match their hose and discharge setup to the 1-1/8-inch outlet.
Pros:- 1,500 GPH rating offers more rated capacity than the 750 GPH SEAFLO 06.
- Built-in float switch starts and stops pumping at specified water levels.
- Supports automatic or manual wiring.
- Compact 1.1-pound body and included stainless steel hose clamp.
Cons:- Manual mode requires the operator to cut power.
- No hose is listed among the included components.
- The 16-foot maximum lifting height is a rated limit, not a guarantee of the stated flow at that height.
Best for: Small- to mid-size boat owners who want automatic bilge control with a 1,500 GPH rated capacity and a manual wiring option.
Not ideal for: Owners who need a ready-to-connect hose kit or expect manual operation to shut off without attention.
- Flow rate:1,500 GPH (25 GPM)
- Voltage:12 V
- Current:3.5 A
- Maximum lifting height:16 ft
- Outlet diameter:1-1/8 in (29 mm)
- Float switch thresholds:Starts above 1.4 in; stops below 1 in
- Dimensions:5.7 × 3.3 × 4.1 in
- Weight:1.1 lb
Our verdict“Choose this for automatic bilge pumping with a 1,500 GPH rating, provided you can supply the hose and manage manual-mode shutoff.”
MAXZONE 12V Automatic Bilge Pump, 1100 GPH
The MAXZONE A02-111001 is a compact automatic pump for buyers who prefer an integrated float switch over a separate switch-and-pump arrangement. Its 1,100 GPH rating is below the 6699 BGP 1500, so it makes more sense where installation space and automatic operation matter more than the higher rated capacity. A 1-meter wire lead gives some flexibility during placement, and the 1-1/8-inch outlet matches a common hose size among these picks. The product data lists a 3-meter maximum lifting height, but does not give switch activation thresholds or a listed current draw. It also recommends a 12 V, 8 A power adapter, a supply detail buyers should account for when planning wiring and protection.
Pros:- Built-in float switch provides automatic operation.
- Compact dimensions suit installations with limited room.
- 1-1/8-inch outlet fits a common discharge hose size.
- One-meter wire lead provides some placement flexibility.
Cons:- Rated flow is lower than the 1,500 GPH 6699 and Rule 02 pumps.
- Product data does not specify current draw or float-switch activation levels.
- The listing recommends an 8 A power adapter, which buyers must include in their electrical planning.
Best for: Owners of compact boats who want a built-in automatic switch and a 1,100 GPH-rated pump with a 1-1/8-inch outlet.
Not ideal for: Buyers who need the higher rated capacity of the 6699 BGP 1500 or want clearly specified current draw and float-switch thresholds.
- Flow rate:1,100 GPH (18.33 GPM)
- Voltage:12 V
- Maximum lifting height:3 m
- Outlet diameter:29 mm (1-1/8 in)
- Wire lead length:1 m
- Dimensions:5.71 × 2.95 × 3.94 in
- Material:Plastic
- Recommended power adapter:12 V, 8 A
Our verdict“Pick the MAXZONE when compact automatic operation matters more than 1,500 GPH-class capacity or fully specified electrical details.”
MAXZONE 12V Non-Automatic Marine Bilge Pump, 1100 GPH
The MAXZONE A-1100GPH suits a boat with an existing switch panel or an owner who specifically wants to control pumping manually. Unlike the automatic MAXZONE A02-111001, this model has no built-in float switch, so it will not start on its own as water rises. Its 1,100 GPH rating is also lower than the 1,500 GPH Rule 02, but the MAXZONE is lighter and more compact on the listed dimensions. A water-cooled motor and ABS-and-stainless-steel construction are intended for marine use; the supplied data does not state a current draw, however, which leaves a detail to confirm when planning the circuit. This is a straightforward pump, not a hands-off bilge-monitoring solution.
Pros:- 1,100 GPH rated flow in a small, lightweight body.
- Water-cooled motor is designed for marine service.
- 1-1/8-inch outlet matches a common discharge connection.
- ABS and stainless steel are specified in the materials.
Cons:- Non-automatic design requires a separate control method and operator action.
- Requires a 12 V DC source.
- Product data does not state current draw.
Best for: Boat owners with a suitable 12 V switch panel who want a compact, manually controlled pump for routine bilge or fishing-vessel use.
Not ideal for: Owners who need automatic water-level response or want a higher rated flow capacity like the Rule 02.
- Pump style:Non-automatic submersible
- Flow rate:1,100 GPH (18.33 GPM; 5,000 L/hour)
- Voltage:12 V DC
- Maximum lifting height:13 ft (4 m)
- Outlet diameter:1-1/8 in (29 mm)
- Materials:Acrylonitrile butadiene styrene and stainless steel
- Dimensions:4.25 × 2.36 × 2.36 in
- Weight:14.1 oz
Our verdict“Choose this compact MAXZONE if manual switching suits your setup; skip it if you need automatic pumping or greater rated capacity.”
Rule 02 1500 GPH 12V Submersible Bilge Pump
The Rule 02 is the high-capacity manual-control choice here: its 1,500 GPH rating matches the 6699 pump, but it does not include an automatic float switch. That makes it a better fit for an existing control panel or a live-well setup than for unattended bilge pumping. Compared with the smaller MAXZONE A-1100GPH, the Rule offers a higher rated flow and is explicitly listed for both bilge and live-well use; the cost of that capacity is a heavier 3.1-pound unit. Its six-foot wire can ease installation reach, while the supplied data gives no maximum lifting height or current draw. The 90-day warranty is also limited compared with the four-year coverage listed for the SEAFLO 06 Series.
Pros:- 1,500 GPH rating exceeds the 1,100 GPH MAXZONE manual pump.
- Listed for both bilge and live-well use.
- Six-foot wire supports installations where a short lead would be limiting.
- Corrosion-resistant construction is specified.
Cons:- Non-automatic operation requires an external switch and operator action.
- At 3.1 pounds, it is heavier than the compact MAXZONE options.
- The listed warranty is 90 days, and no lifting height or current draw is provided.
Best for: Boat owners with a 12 V control system who need a 1,500 GPH non-automatic pump for bilge or live-well applications.
Not ideal for: Owners seeking automatic activation, a lighter pump, or a longer stated warranty period.
- Flow rate:1,500 GPH
- Voltage:12 V DC
- Type:Non-automatic, fully submersible bilge pump
- Wire length:6 ft
- Dimensions:5.25 × 6 × 4.5 in
- Weight:3.1 lb
- Materials:Plastic and stainless steel
- Warranty:90 days
Our verdict“Choose the Rule 02 for 1,500 GPH-rated manual pumping across bilge and live-well duties, not for unattended operation.”
SEAFLO 06 Series Automatic Submersible Bilge Pump, 750 GPH, 12V
The SEAFLO 06 Series 750 GPH prioritizes integrated automation and service access over raw flow. Its float switch starts pumping at approximately 1.6–2.0 inches of water, while the removable strainer gives owners a way to clear debris without treating the pump as a sealed unit. That maintenance feature separates it from the compact automatic MAXZONE 1100 GPH, which has a higher rated flow but does not list a removable strainer. The SEAFLO’s 750 GPH rating and 8.2-foot maximum lift are more modest than the 1,500 GPH 6699, so it is better suited to smaller bilges than buyers seeking maximum capacity. Ignition-protected construction and a four-year warranty add reassurance, though its maximum 5.0 A draw calls for suitable circuit protection.
Pros:- Integrated float switch provides automatic operation.
- Removable strainer allows access for cleaning.
- Ignition-protected housing is specified.
- Four-year warranty is longer than the 90-day Rule 02 warranty.
Cons:- 750 GPH rating is substantially lower than the 1,100 GPH MAXZONE and 1,500 GPH options.
- Maximum lifting height is 8.2 ft.
- Maximum 5.0 A current draw requires correctly planned circuit protection.
Best for: Owners of smaller boats who want automatic bilge pumping, straightforward strainer cleaning, and a longer stated warranty.
Not ideal for: Buyers needing higher rated capacity or greater lifting height than this 750 GPH pump provides.
- Flow rate:750 GPH (12.5 GPM)
- Voltage:12 V DC
- Outlet size:3/4 in (19 mm)
- Maximum current draw:5.0 A
- Activation water level:Approximately 1.6–2.0 in (40–50 mm)
- Maximum lifting height:8.2 ft
- Dimensions:5.7 × 3.2 × 4 in
- Warranty:4 years
Our verdict“Choose the SEAFLO for a smaller bilge where automatic operation and cleanable strainer access matter more than high flow.”
SEAFLO 06 Series Automatic Submersible Bilge Pump – 1100 GPH, 12V, 1-1/8″ Outlet, Built-In Float Switch, Snap-Off Strainer, Compact for Marine Boat Yacht, CE & RoHS Certified
I’d choose the SEAFLO 06 Series 1100 GPH for a boat owner who wants automatic bilge operation without adding a separate float switch. Its built-in switch responds to changing water levels, while the snap-off strainer makes clearing debris easier than on a pump without a quick-release base. At 3.0A operating current, it also draws less current than the 2000 GPH SEAFLO 01 Series, though its lower flow is better suited to routine water removal than faster evacuation needs. The compact 5.9-inch length is useful in a crowded bilge, but the one-meter lead may need an extension depending on the installation. I’d also favor a sturdier option if a plastic housing is a concern.
Pros:- Built-in float switch provides automatic on-and-off operation.
- 1100 GPH capacity suits routine water removal in smaller boats.
- Snap-off strainer simplifies access for cleaning.
- Compact 5.9-inch length and 1.2-pound weight help in tight bilges.
Cons:- One-meter wire lead may require an extension for some installations.
- Plastic housing may not suit buyers who prefer a metal-bodied pump.
- Lower flow capacity than the 2000 GPH pumps in this roundup.
Best for: Boat owners wanting a compact, automatic 1100 GPH pump with a removable strainer for routine bilge water.
Not ideal for: Owners seeking maximum evacuation capacity, a longer factory wire lead, or a metal-bodied pump.
- Model:SFBP1-G1100-06
- Flow rate:1100 GPH (18.33 GPM)
- Voltage:12V DC
- Operating current:3.0A
- Outlet diameter:1-1/8 in
- Maximum lifting height:13 ft
- Wire lead length:1 m (3 ft)
- Dimensions:5.9 x 3.27 x 4.05 in
- Warranty:4 years
Our verdict“Choose this SEAFLO for compact, hands-free 1100 GPH pumping, but step up to a 2000 GPH model if higher evacuation capacity matters more.”
Subtoy 12V Automatic Marine Bilge Pump Kit, 1100 GPH
The Subtoy 1100 GPH kit is the practical pick when the pump is only part of what an installation needs. It includes a six-foot hose, two clamps, and a thru-hull fitting, unlike the SEAFLO 06 Series 1100 GPH, whose listed package focuses on the pump and quick-release strainer. That bundled hardware can reduce the number of separate parts to source, and the built-in float switch handles automatic cycling. The tradeoff is fit: this kit is designed around a 1-1/8-inch discharge and is specifically not compatible with 3/4-inch hose setups or intended as a direct replacement for 750 GPH systems. I’d check existing hose and outlet dimensions before choosing it; buyers with a mismatched installation may find the included components less useful.
Pros:- Built-in float switch supports automatic operation.
- Includes a six-foot flexible hose, two clamps, and a thru-hull fitting.
- 1100 GPH capacity matches the SEAFLO 06 Series 1100 GPH.
- Compact listed dimensions of 5.9 x 3.2 x 4.1 inches.
Cons:- Not compatible with 3/4-inch discharge hose setups.
- Not designed as a direct replacement for 750 GPH systems.
- Included hose and fitting may not match an existing boat’s plumbing.
Best for: DIY boat owners installing or replacing a 1100 GPH pump who need a compatible hose, clamps, and thru-hull fitting in the kit.
Not ideal for: Owners with 3/4-inch discharge plumbing or a 750 GPH pump installation they expect to replace directly.
- Model:BBP1112A
- Flow rate:Up to 1100 GPH
- Voltage:12V
- Discharge hose size:1-1/8 in
- Hose length:6 ft
- Switch:Built-in automatic float switch
- Material:ABS
- Dimensions:5.9 x 3.2 x 4.1 in
- Included components:Flexible hose, pump, 2 hose clamps, thru-hull fitting
Our verdict“Pick the Subtoy kit when its 1-1/8-inch fittings match your boat and you want key installation parts bundled with an automatic 1100 GPH pump.”
SEAFLO 01 Series 2000 GPH 12V Submersible Bilge Pump
For buyers prioritizing evacuation capacity, the SEAFLO 01 Series 2000 GPH moves substantially more water than the 1100 GPH SEAFLO 06 Series. Its anti-airlock technology is intended to support dependable water evacuation, and its design supports manual operation or use with an automatic float switch. That flexibility suits owners who want to choose their switching setup rather than rely on a built-in automatic switch. The compromise is a greater electrical demand: it draws 8.5A and can reach a 14A maximum draw, so the boat’s wiring and protection need to suit that load. Its 3-foot lead also may not reach every installation point. Compared with the 1100 GPH pumps, this is a higher-capacity choice, not the simpler low-draw option.
Pros:- 2000 GPH flow rate exceeds the 1100 GPH SEAFLO 06 Series.
- Anti-airlock technology supports water evacuation.
- Can be used with manual switching or an automatic float switch.
- Corrosion-resistant construction is specified for freshwater and saltwater use.
Cons:- Maximum draw of 14A places greater demands on the electrical installation.
- Automatic operation requires a compatible separate float switch.
- Three-foot wire lead may be short for some bilge layouts.
Best for: Owners of boats with suitable 12V wiring who want 2000 GPH capacity and the flexibility to use a manual or separate automatic switch.
Not ideal for: Small-boat owners with limited electrical capacity or buyers who want a built-in automatic float switch and lower current draw.
- Model:SFBP1-G2000-01
- Flow rate:2000 GPH (33.33 GPM)
- Voltage:12V DC
- Operating current:8.5A
- Maximum draw:14.0A
- Outlet diameter:1-1/8 in (29 mm)
- Maximum head:16.4 ft (5 m)
- Wire lead:14 AWG, 3 ft (1 m)
- Warranty:4-year limited
Our verdict“Choose the SEAFLO 01 Series when 2000 GPH capacity and switch flexibility justify its higher electrical demand and separate-switch setup.”
NEWMAIX 12V 2000 GPH Non-Automatic Submersible Bilge Pump
The NEWMAIX 2000 GPH is a high-capacity pump for installations where the operator wants manual control rather than automatic cycling. That distinction matters against the automatic SEAFLO 06 Series and Subtoy 1100 GPH kit: this NEWMAIX has no automatic switch, so it needs a suitable switching arrangement and someone or a system to activate it. Its listed water-cooled motor and ignition protection are useful marine-oriented features, while its 8A current draw is below the SEAFLO 01 Series 2000 GPH pump’s stated 8.5A operating current. The supplied details do not list an outlet diameter or hose hardware, which makes installation matching harder to judge from the product data alone. I’d select it for manual setups, not for unattended bilge protection.
Pros:- 2000 GPH flow capacity matches the high-capacity SEAFLO 01 Series.
- Water-cooled motor is specified.
- Ignition protection is included among the listed features.
- Listed 8A current is below the SEAFLO 01 Series pump’s 8.5A operating current.
Cons:- Non-automatic operation requires a separate control arrangement.
- Product data does not specify an outlet diameter or included hose fittings.
- Requires a 12V DC power source.
Best for: Boat owners who already have a suitable manual switching setup and want a 2000 GPH submersible pump with ignition protection.
Not ideal for: Owners who need automatic bilge response, an included float switch, or clearly specified discharge fittings for an existing hose.
- Model:5201042A
- Flow rate:2000 GPH
- Voltage:12V DC
- Current:8A
- Operation:Non-automatic
- Motor:Water-cooled
- Material:Plastic
- Dimensions:8.66 x 5.51 x 7.46 in
- Weight:1.19 kg
Our verdict“Choose this NEWMAIX when manual control is intentional and your installation can accommodate its unspecified discharge fittings; skip it for automatic protection.”
6699 12V 2000 GPH Boat Bilge Pump, BGP 2000
The 6699 BGP 2000 stands apart from the SEAFLO 01 Series 2000 GPH pump with a listed maximum delivery height of 19.7 feet, compared with the SEAFLO’s 16.4-foot maximum head. That makes the 6699 worth a closer fit check when the discharge route has a substantial vertical lift, though those figures alone do not describe flow at a particular height. Its ABS thermoplastic body and pure copper motor provide a different construction profile from the SEAFLO’s stainless-steel material listing. The pump also specifies a 7.5A draw and a 3.1-foot power cord. It is not listed as automatic, and its included components amount to the pump and a clamp, so owners seeking a ready-to-install automatic kit should compare it with the Subtoy kit instead.
Pros:- 2000 GPH maximum flow capacity.
- Specified maximum delivery height of 19.7 feet.
- ABS thermoplastic body and pure copper motor.
- Includes a stainless steel hose clamp.
Cons:- Product data does not list automatic operation or a built-in float switch.
- Power cord is only 3.1 feet long.
- Package does not include the hose and thru-hull fitting supplied with the Subtoy kit.
Best for: Boat owners seeking a 2000 GPH pump for a discharge layout where the stated delivery height is a key fit requirement.
Not ideal for: Owners who need a built-in automatic float switch, a longer power cord, or a complete hose-and-fitting kit.
- Model:BGP 2000
- Maximum flow rate:2000 GPH (33 GPM)
- Voltage:12V
- Current:7.5A
- Maximum delivery height:19.7 ft
- Outlet diameter:1-1/8 in (29 mm)
- Power cord length:3.1 ft
- Material and motor:ABS thermoplastic; pure copper motor
- Included components:Boat bilge pump, stainless steel clamp
Our verdict“Consider the 6699 for a 2000 GPH installation where its stated delivery height suits the discharge route, but choose an automatic kit for hands-free operation.”
How We Picked
I compared the listed pumps by rated capacity, automatic-control setup, installation fit, and maintenance access. A built-in float switch or an included kit can reduce the number of separate components a buyer must source, while a non-automatic pump may suit an existing switch arrangement. I also treated outlet size, compactness, and strainer access as practical selection factors where those details were provided. Because the product names do not establish real-world flow under a particular boat’s conditions, I did not treat the GPH label as a guarantee of installed performance.
The ranking favors options that combine a useful capacity with a clear, practical setup for a broad range of buyers. The FILTERUP 1100 GPH kit leads as a balanced automatic pick; the SEAFLO 06 Series 1100 GPH earns a place for its built-in float switch and snap-off strainer; and higher-capacity pumps rank well for buyers with matching plumbing and electrical systems. Non-automatic models remain relevant, but they rank lower for shoppers seeking a ready-to-run automatic arrangement. Product names alone do not confirm details such as fuse requirements, duty cycle, or independent performance testing, so buyers should verify these against the product documentation before installation.
Factors to Consider When Choosing Marine Bilge Pumps
Before choosing among these marine bilge pumps, I’d match the pump to the boat’s actual bilge, plumbing, and electrical setup rather than buying by capacity alone. These broader checks can prevent a pump that looks suitable on paper from becoming difficult to install or ineffective once connected.
Choose Capacity Around the Installed System
A pump’s listed GPH rating is a comparison point, not a promise of the amount of water it will move in your boat. Hose length, vertical lift, bends, outlet restrictions, and voltage at the pump can all reduce delivered flow. Measure the route from pump to discharge and check the maker’s flow information at the expected lift if available. A larger pump may suit a higher-risk setup, but it can also require larger wiring and plumbing. Avoid assuming that a 2000 GPH model will outperform a smaller pump if your discharge hose cannot support its flow. Match pump capacity to both the vessel’s needs and the rest of the system.
Decide How the Pump Will Turn On
Automatic pumps with built-in float switches can respond to rising water without a person at the controls, which is useful when a boat is unattended. A non-automatic pump can make more sense when the boat already has a compatible separate float switch or control panel. Check how the pump’s automatic circuit is wired and whether a manual override is supported; product names do not answer every wiring question. A built-in switch also adds a component that needs periodic checks for movement and debris. Do not buy an automatic model on the assumption that it replaces every other bilge alarm or backup. Choose a control arrangement that fits how the boat is stored and monitored.
Verify Fit Before Ordering
Bilge spaces can be shallow, narrow, or crowded by hoses and wiring, so compare pump dimensions with the actual mounting area. Check outlet diameter against the existing hose rather than relying on adapters to solve every mismatch. A smaller pump can be easier to place, but the most convenient position may not provide a clear intake or stable mounting surface. Leave room to reach the strainer, connections, and mounting points after installation. For replacement jobs, identify the old pump’s outlet size, voltage, switching method, and mount style first. This prevents buying a pump that has suitable capacity but creates extra plumbing or electrical work.
Budget for Electrical and Plumbing Demands
Higher-capacity pumps may draw more current, so wiring, fuse protection, connectors, and the battery system must match the manufacturer’s instructions. An undersized wire run can cause voltage drop and reduce pump performance, even when the pump itself is rated for a high flow. Check the specified fuse and wire gauge for the pump and the length of the circuit; do not copy another boat’s wiring without checking its layout. A larger discharge hose may also be needed to avoid restricting output. This is one reason a moderate-capacity pump can be a better practical choice than the largest listing. If the current installation is unfamiliar, have a qualified marine electrician check the circuit.
Plan for Debris and Routine Checks
Bilges collect dirt, leaves, fibers, and other debris that can block an intake or interfere with a float switch. A pump with accessible strainer parts can make routine cleaning less awkward, but every setup still needs inspection. Check that the pump sits clear of sludge and that its intake is not pressed against the bilge floor or a hull surface. Test automatic operation and manual controls on a regular schedule, following the product instructions. Look over hose clamps, discharge routing, wiring, and the battery connection at the same time. A backup pump or alarm may be worth considering where the boat is left unattended or water ingress could become serious.
Compare Complete Setup Needs, Not Just the Pump
A kit may include components that simplify a first installation, while a standalone pump may be a better fit for a boat with established plumbing and controls. Confirm exactly what is included: a product labeled a kit does not automatically confirm that every hose, fuse, switch, or connector you need is in the box. Check whether you will need a separate float switch for a non-automatic model and whether that switch is compatible with your wiring plan. Also compare the manufacturer’s installation instructions and service support before committing. Paying more for included parts can make sense when they suit your boat, but not when they duplicate equipment already installed. The best value is the setup that fits without unnecessary adapters or replacement parts.
Frequently Asked Questions
Should I choose an automatic bilge pump or a non-automatic model?
Choose automatic operation if you want the pump to respond to rising water while the boat is unattended, provided the pump is correctly wired and maintained. A non-automatic model can suit a boat that already has a compatible float switch or a control system you prefer to manage separately. In this roundup, the FILTERUP 1100 GPH and SEAFLO 06 Series models offer automatic operation, while the Rule 2000 GPH and MAXZONE 1100 GPH non-automatic pumps require a separate control arrangement. Check whether manual override is available and how the manufacturer specifies wiring. No automatic pump removes the need for inspections or a working battery.
Is a 2000 GPH pump always a better choice than an 1100 GPH pump?
No. The larger rating can be useful when the boat and plumbing are designed for that flow, but a narrow hose, long discharge route, or high lift can limit what reaches the outlet. Higher-capacity pumps may also place greater demands on wiring and the battery system. The 1100 GPH options in this lineup can be a more practical fit where space, plumbing, or electrical capacity is limited. Compare the manufacturer’s flow data at your expected lift, not only the headline rating. Select capacity with the whole installation in mind.
Can I replace my existing pump with any 12V model from this roundup?
Not without checking compatibility. Confirm that the replacement matches your system voltage, outlet and hose size, mounting space, switching arrangement, and wiring requirements. A built-in automatic switch may change how the pump connects to existing controls, while a non-automatic replacement may need a separate switch. The SEAFLO 06 Series 1100 GPH listing specifies a 1-1/8-inch outlet, but other model names do not provide enough detail to assume they match your current plumbing. Compare the installation manual and the old pump’s label before ordering. If the wiring is unclear, ask a marine electrician to check the setup.
Do I need a separate float switch if the pump is described as automatic?
Not necessarily: several products here are described as having a built-in float switch, including the NEWMAIX 2000 GPH automatic pump and SEAFLO 06 Series models. However, the word automatic does not tell you how every circuit is arranged or whether a separate manual switch is included. Read the wiring diagram and included-parts list for the exact model. A separate alarm or backup switch may still serve a different purpose from the pump’s automatic control. Test the system after installation according to the instructions and check that the pump can be reached for service.
When should I prioritize a serviceable strainer over a higher flow rating?
Prioritize easy strainer access when your bilge is prone to debris or when the pump will be difficult to inspect once installed. The SEAFLO 06 Series 1100 GPH model specifically lists a snap-off strainer, which may simplify cleaning compared with a model whose service access is unclear. A higher rating cannot help if an intake becomes obstructed or a float switch is held by debris. Still, strainer design is only one part of the choice; confirm that the pump has suitable capacity and fits your plumbing. If the bilge is clean and easy to access, capacity and control compatibility may matter more.
Conclusion
For a broad mix of boat owners, I’d choose the FILTERUP 1100 GPH Automatic Bilge Pump Kit as the best overall because its automatic setup and midrange rating make a practical starting point. The MAXZONE 12V Non-Automatic 1100 GPH is my best value fit for buyers who already have a compatible switch and want a simpler pump arrangement; confirm what is included before purchase. For a premium-style feature set, I’d look at the SEAFLO 06 Series 1100 GPH, whose built-in float switch and snap-off strainer offer useful control and service access. Beginners should favor an automatic kit or clearly documented automatic model, then verify the wiring and installation instructions before fitting it. For higher-capacity needs, compare the Rule 2000 GPH non-automatic with the NEWMAIX 2000 GPH automatic based on whether you have a separate switch and whether your hose, lift, and electrical system suit the pump. The right choice is the one that fits the boat’s complete bilge system, not simply the highest GPH label.
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