Bilge Pump
12 V and 24 V bilge pumps and float switches that discharge water accumulated in the boat bilge: choose the right pump by GPH capacity.
Products (22)
- Cacheng 12V Submersible Bilge Pump, 10 m, 4.5 m³/h – $52.71
- Kent Fuel Transfer and Bilge Pump, 24V, 50 mm Outer Diameter – $8.84
- Leo XBP-2000 Bilge Pump, 12 V, 2,000 GPH, 125 L/min, 4 m – $43.38
- Momentum 12 V DC Drainage Submersible Bilge Pump, 8 m, 14 m³/h – Request a quote (out of stock)
- Nortek SINTINE 550 12V Bilge Pump – $36.00
- Seaflo SFBP1-G800-05 Bilge Pump, Horizontal 90°, 12 V, 800 GPH, 4 A, 3/4" Outlet – $21.15
- Seaflo SFBS-20-01 Bilge Pump Float Switch, DS Pump Float – $11.27
- Seaflo SFSP1-G200-03B Bilge Submersible Pump, 12 V, 200 GPH, 37.7 mm Outer Diameter – Request a quote (out of stock)
- Seaflo SFSP1-L015-02 Bilge Submersible Pump, 12 V, 15 L/min, 1 Bar – $16.02
- Seaflo SFSP1-L016-01 Bilge Submersible Pump, 6 m Head, 12 V, 12 L/min – Request a quote (out of stock)
- Seaflo SFSP-G280-02A Bilge Submersible Pump, 12V, 280 GPH, 41 mm Outer Diameter – $26.17
- Seaflo SR09705 Diesel Fuel Pump, 24 V, 70 m, 6 L/min, SFBP2-G103-01 – $163.24
- Seaflo SR12152 Automatic Bilge Pump, 24 V, 750 GPH, SFBP2-G750-06 – $31.64
- Seaflo SR12200 Bilge Pump, 12V, 500 gph, SFBP1-G500-01 – $13.66
- Sumak SKLD 12G Pencil Submersible Pump, 3 m, 720 L/h, 12V, Manual – Request a quote (out of stock)
- Sumak STNF750G Bilge Submersible Pump, 4 m, 1000 L/h, 12 V, Automatic Float Switch – $69.70
- Tmc Bilge Pump Float Switch, DS Pump Float, 12-24 V, 10 A – Request a quote (out of stock)
- Tmc SR09509 Water and Diesel Fuel Transfer Pump, 24V, 280 gph – $18.64
- Tmc SR12106 Bilge Pump, 12V, 1,000 gph – $41.53
- Tmc SR12222 Top-Outlet Bilge Pump, 12 V, 1000 gph – Request a quote (out of stock)
- Water Sound 12V DC Drainage Submersible Pump, 7 m Head, 7.5 m³/h – $76.26
- Water Sound FP 2000 Bilge Pump, 12V, 2,000 GPH – Request a quote (out of stock)
Brands: Cacheng · Kent · Leo · Momentum · Nortek · Seaflo · Sumak · Tmc · Water Sound
What is a bilge pump?
The bilge is the lowest section of the boat where water collects. Water that accumulates there due to waves, rain, seal, and shaft leaks is discharged by a bilge pump. The bilge pump is one of the most critical pieces of equipment for boat safety; it reduces the risk of sinking by preventing water from building up, especially when the boat is moored and unattended.
Category contents
- Submersible bilge pumps: Compact pumps installed in the bilge, operating on 12 V or 24 V.
- Automatic models: Run automatically when the water rises, via a built-in sensor or float switch.
- Float switches: Level switches that make manual pumps operate automatically.
- Top-outlet and side-outlet models: Different outlet options depending on the installation location.
The GPH value in product names indicates the volume of water the pump can discharge per hour, expressed in gallons.
Selection criteria
Pump capacity should be selected according to the boat's size and bilge volume; using more than one pump on larger vessels increases safety. The capacity value in the catalog is measured at free flow; the length and height of the discharge hose reduce the actual flow rate. The pump voltage must match the boat's electrical system. Automatic operation is critically important for pumping out water when the boat is left unattended.
Installation recommendations
The pump should be placed at the lowest point of the bilge so that the intake strainer does not become clogged. The discharge outlet must be above the waterline, and the hose must be routed to prevent seawater from siphoning back into the boat. Electrical connections must be made with marine-grade cable and a fuse of the correct gauge; an automatic pump must be wired so that it can operate even when the main switch is off.
Frequently asked questions
What does GPH mean?
It stands for gallons per hour and indicates the pump's flow rate.
How many GPH does my boat need?
It depends on the boat's size and bilge configuration; high-capacity or multiple pumps are recommended for larger vessels.
Why is a float switch important?
It allows the pump to start automatically when the water level rises and provides safety when the boat is left unattended.
Why is the pump not discharging water?
A clogged intake strainer, a kinked hose, or low battery voltage are the most common causes.
Can a bilge pump be used for fuel transfer?
Some models are also specified for diesel fuel transfer; check the product description.
How often should it be tested?
It should be tested at the start of the season and at regular intervals by manually lifting the float switch.