Best Heavy Duty Boat Bilge Pumps of 2025

Jason Kiser Avatar
Jason Kiser
Last Updated: Jan 5, 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Heavy duty boat bilge pumps are essential for keeping your boat afloat and preventing any water damage. These pumps are designed to quickly and efficiently remove excess water from the bilge area of your boat, ensuring that your vessel remains safe and dry. With a range of different sizes and capacities available, these pumps can handle even the toughest conditions, providing reliable performance when you need it most. Whether you're a professional boat operator or a weekend enthusiast, investing in a heavy duty bilge pump is a smart choice that will help keep your boat in top condition for years to come.

At a Glance: Our Top Picks

Johnson Pumps 01674-001 Bilge Pump with Ultima Switch Cover #TOP 1
Johnson Pumps 01674-001 Bilge Pump with Ultima Switch
ftb score rating icon 9.9
SAILFLO 2000 GPH Bilge Pump Cover #TOP 2
SAILFLO 2000 GPH Bilge Pump
ftb score rating icon 9.8
OASIS MARINE 3700 GPH Bilge Pump Cover #TOP 3
OASIS MARINE 3700 GPH Bilge Pump
ftb score rating icon 9.6

Top 10 Heavy Duty Boat Bilge Pumps

#TOP 1

Johnson Pumps 01674-001 Bilge Pump with Ultima Switch

01674-001
Johnson Pumps 01674-001 Bilge Pump with Ultima Switch Cover
Johnson Pumps 01674-001 1600 GPH Heavy Duty Automatic Bilge Pump with Ultima Switch, 12V,Red

The Johnson Pumps 01674-001 is a heavy duty submersible bilge pump with a thermoplastic body and an Ultima switch. The pump features a liquid cooled 12-pole motor with double ball bearings and a lip seal for added durability. It has a 1600 GPH straight capacity and 1-1/8" and 1-1/4" connections, making it a reliable choice for boats.

What We Like
Durable thermoplastic body
Liquid cooled motor for added performance
Double ball bearings for smoother operation
#TOP 2

SAILFLO 2000 GPH Bilge Pump

SAIL2000
SAILFLO 2000 GPH Bilge Pump Cover
SAILFLO 2000 GPH Fully Submersible 12 Volt Electric Bilge Pump - 1-1/8 dicharge hose outlet - Heavy-Duty, Water-Cooled Motor with Snap Lock Strainer Base for Easy Installation

The SAILFLO Bilge Pump is an efficient solution for water removal on boats, providing a powerful 2000 gallons per hour pumping capacity. Its heavy-duty motor ensures rapid performance, making it ideal for keeping your boat dry. The water-cooled design enhances the motor's lifespan, giving you peace of mind during your maritime adventures. With moisture-tight seals and stainless steel components, this pump resists corrosion, ensuring durability in harsh marine environments. You can enjoy a quiet boating experience thanks to its silent operation, allowing you to focus on the fun without disruptive noise.

What We Like
High pumping capacity
Corrosion-resistant materials
Easy installation
Quiet operation
#TOP 3

OASIS MARINE 3700 GPH Bilge Pump

OM3700C
Stainless Steel
OASIS MARINE 3700 GPH Bilge Pump Cover
OASIS MARINE 3700 GPH 12v Heavy Duty Bilge Pump for Boats - Our Largest Submersible Water Pump with 1-1/2" Discharge Hose Outlet-Boat Plumbing High Flow Marine Pump for Main Pump or Emergency Back Up!

The OASIS MARINE Bilge Pump is a powerful solution for your boating needs. With a 1-1/2 inch discharge outlet and a 12-volt system, it delivers high flow rates, making it ideal for both main pumping and emergency situations. Its anti-airlock protection ensures reliable operation, even in dry conditions, giving you peace of mind during your outings. This pump also meets rigorous safety standards, ensuring it’s built to last. Plus, the exclusive moisture-tight seals and marine-grade wiring enhance durability, making it a smart investment for your boat's plumbing system.

What We Like
High flow rate
Run dry capability
Meets safety standards
Durable construction
#TOP 4

SEAFLO 4700 GPH Electric Bilge Pump

SEAFLO 4700 GPH / 12V Bilge Pump
4700 Gph
SEAFLO 4700 GPH Electric Bilge Pump Cover
SEAFLO 01-Series 4700GPH Bilge Pump – 12V Marine Submersible Pump with Anti-Airlock Protection, 4-Year Warranty | Reliable for Boats and Marine Applications Submersible Heavy-Duty Electric Bilge Pump

This boat bilge pump has a capacity of 4700 gallons per hour and a 2-inch outlet port, suitable for heavy-duty applications. It operates on 12V DC power and comes with a 4-year warranty. The pump is designed to keep your boat dry and safe, ensuring that any water in the bilge is removed quickly and efficiently.

What We Like
High capacity of 4700 gallons per hour
2-inch outlet port suitable for heavy-duty applications
Operates on 12V DC power
#TOP 5

Attwood 4730-4 Boat Bilge Pump

4730-4
White
1700 GPH
Attwood 4730-4 Boat Bilge Pump Cover
attwood 4730-4 Heavy Duty 1,700 GPH Fully Submersible Boat Bilge Pump, White Finish

The Attwood Bilge Pump is a heavy-duty, fully submersible boat livewell/baitwell bilge pump that is designed to sustain a flow rate of 1,700 gallons per hour with 12 feet of head pressure. Its fully submersible design makes it ideal for use in a sea chest, ensuring efficient water pumping. The stainless steel motor shaft resists corrosion, making it durable and long-lasting. The pump also features a locking tab and base swivel, allowing for eight different mounting positions to suit your needs. With a 3-year warranty, the Attwood Bilge Pump offers reliability and peace of mind for boat owners.

What We Like
1,700 GPH Flow Rate
Fully Submersible Design
Corrosion-Resistant Stainless Steel Motor Shaft
#TOP 6

Attwood 1700 Series Bilge Pump

Default Title
Default Title
Attwood 1700 Series Bilge Pump Cover
attwood Heavy-Duty Bilge Pump 1700 Series - 12V - 1700 GPH

The Attwood Bilge Pump is a reliable 12V water pump designed specifically for boats. With a powerful capacity of 1700 gallons per hour, this pump efficiently removes unwanted water from your vessel, keeping it safe and dry. It comes in a convenient package of ten, making it easy to stock up for multiple uses or replacements. The default color ensures it fits seamlessly with your boat's interior. This heavy-duty pump is essential for maintaining your boat's performance and enhancing your boating experience.

What We Like
High water removal capacity
Convenient package size
Designed for boat use
Heavy-duty construction
#TOP 7

SEAFLO 4700 GPH Bilge Pump

SFBP2-G4700-01
SEAFLO 4700 GPH Bilge Pump Cover
Seaflo 4700 GPH 24v Heavy Duty Electric Bilge Pump (4700gph 24v)

The SEAFLO Bilge Pump 4700 GPH is designed to efficiently remove water from your boat, with a powerful capacity of 4700 gallons per hour. This makes it ideal for keeping your boat dry and safe during your adventures on the water. It features a 50 mm outlet port, ensuring a strong flow of water out of the bilge. Operating at 24 volts, this heavy-duty pump is reliable and efficient. Plus, it comes with a four-year warranty, giving you peace of mind about your investment.

What We Like
High water removal capacity
Durable and reliable design
Efficient 24V operation
Long warranty period
#TOP 8

Rule 16A 3700 GPH Bilge Pump

White/Red
24 Volt
Rule 16A 3700 GPH Bilge Pump Cover
Rule 16A 3700 GPH Heavy Duty Bilge Pump, Non-Automatic, 24 Volt , White/Red

The Rule 16A Bilge Pump is a reliable choice for boat owners looking to keep their vessels dry. With a robust capacity of 3700 gallons per hour, it effectively removes unwanted water, ensuring your boat remains safe and operational. This non-automatic pump operates on a 24-volt system, making it suitable for various marine applications. Its durable design is built to withstand the rigors of a marine environment, providing you with peace of mind during your boating adventures. Whether you're dealing with rainwater or bilge water, this pump is a practical solution for maintaining your boat's integrity.

What We Like
High water removal capacity
Durable marine-grade construction
Non-automatic operation
24-volt power compatibility
#TOP 9

SEAFLO 03-Series Bilge Pump Float Switch

SFBS-25-03A
Orange, White
SEAFLO 03-Series Bilge Pump Float Switch Cover
SEAFLO 03-Series Heavy Duty Bilge Pump Float Switch for 12V, 24V, 32V

This bilge pump float switch is made of high-quality ABS material and has a newly designed sealing system that ensures maximum durability and longevity. It can handle 12V, 24V, and 32V systems up to 25 Amps. The mercury-free electric reed switch system offers consistent activation performance. The float switch turns on the pump when the water level reaches 1.77" (45mm) and turns it off when the water level reaches 0.79" (20mm).

What We Like
Durable and long-lasting due to high-quality ABS material and newly designed sealing
Can handle 12V, 24V, and 32V systems up to 25 Amps
Mercury-free electric reed switch system for consistent activation performance
#TOP 10

AIRTAK Bilge Pump for Boat DC12V 1500GPH

ATN2BP-G1500-NCFS12
White
AIRTAK Bilge Pump for Boat DC12V 1500GPH Cover
AIRTAK Bilge Pump for Boat DC12V 1500GPH Small Bilge Pump 12 Volt Electric Water Pump Low Noise with The Switch

The AIRTAK Bilge Pump is a compact and portable 12 volt electric water pump designed for boats. It features a long life motor for improved work efficiency, heavy duty marine sealant and corrosion protection for durability, a cleanable strainer for easy maintenance, and common installation locations for easy setup. It is versatile and can be used in aquariums, fishing boats, fountains, and other places to easily drain water.

What We Like
Compact and portable
Durable with heavy duty marine sealant and corrosion protection
Easy to maintain with cleanable strainer
Buying Guide Image

Why We Recommend Heavy Duty Boat Bilge Pumps

When it comes to boating, safety is always a top priority. One important safety feature is a bilge pump, which is used to remove water from the bilge of your boat. A good bilge pump can help prevent your boat from sinking, so it's important to choose a high-quality, heavy duty pump. In this buying guide, we will go over some of the key factors to consider when purchasing a heavy duty boat bilge pump, as well as provide instructions on how to use it.

First, consider the size and type of boat that you have. Different boats have different bilge areas, so it's important to choose a pump that is the right size and type for your boat. For example, if you have a small boat with a relatively small bilge area, you may be able to use a small, manual bilge pump. If you have a larger boat, however, you'll want to choose a larger, electric bilge pump that can handle the increased volume of water.

Next, consider the flow rate of the bilge pump. The flow rate is the amount of water that the pump can move per minute, and it's an important factor to consider when choosing a bilge pump. A higher flow rate means that the pump can remove water from your bilge more quickly, which can be important in emergency situations.

It's also important to consider the durability and quality of the bilge pump. Because bilge pumps are used in a marine environment, they are exposed to salt water and other corrosive elements. Choose a pump made from durable materials like stainless steel, and make sure that it has a good reputation for reliability and performance.

To use your heavy duty boat bilge pump, first make sure that it is properly installed on your boat. Most pumps will come with instructions on how to install them, but in general, you will need to attach the pump to the bilge area of your boat using the included mounting hardware.

Once your pump is installed, you can use it to remove water from the bilge of your boat. If you have an electric bilge pump, simply turn it on and let it run until the bilge is clear of water. If you have a manual bilge pump, you'll need to use the handle to manually pump the water out of the bilge.

In the event of an emergency, such as a leak or flood in the bilge of your boat, it's important to act quickly. If you have an electric bilge pump, turn it on immediately and let it run until the water is removed. If you have a manual bilge pump, use it to remove as much water as possible as quickly as you can.

It's also important to regularly maintain your heavy duty boat bilge pump. After each use, make sure to clean the pump and remove any debris that may have accumulated on it. You should also periodically check the mounting hardware and make sure that it is tight and secure.

In summary, when purchasing a heavy duty boat bilge pump, consider the size and type of boat you have, the flow rate of the pump, and the durability and quality of the pump. With the right bilge pump and a little bit of maintenance, you can ensure that your boat stays safe and afloat on the water.

Frequently Asked Questions (FAQs)

1. How big a bilge pump do I need?

I recommend the following total-bilge-pump capacities as rules of thumb. Boats less than 20 feet: 1,000 gph; 20 to 25 feet: 2,500 gph; 25 to 32 feet: 4,000 gph; 32 to 36 feet: 6,000 gph; 37 to 45 feet: 8,500 gph.

2. How high can a bilge pump lift water?

According to Rule's technical documents, the pump will put out 1,620gph against a 1m (3ft 4in) head or 1,300gph against 2m (6ft 8in). In other words, you lose around 20 percent of your pump's output when it has to lift the bilge water more than 3ft and 30 percent at 6ft 8in.

3. How many bilge pumps should a boat have?

For small boats, one bilge pump is usually sufficient. But as a boat gets larger a second bilge pump is a very good idea. Some boats may have as many as three or four bilge pumps. Automatic bilge pumps are often more reliable than manual bilge pumps.

4. Should bilge pump be wired directly to battery?

Your 'main' bilge pump should be wired seperatly to you 'domestic battery' and the switch set to 'auto', this will enable you to switch everything else off when you leave the boat/go home.

Editor's Notes

During our heavy duty boat bilge pump research, we found 24 heavy duty boat bilge pump products and shortlisted 10 quality products. We collected and analyzed 11,078 customer reviews through our big data system to write the heavy duty boat bilge pumps list. We found that most customers choose heavy duty boat bilge pumps with an average price of $52.29.

The heavy duty boat bilge pumps are available for purchase. We have researched hundreds of brands and picked the top brands of heavy duty boat bilge pumps, including Johnson Pump, SAILFLO, OASIS MARINE, SEAFLO, Attwood. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Jason Kiser Avatar

Jason Kiser is an editor who lives in California, he previously worked in a travel agency for ten years, which enabled him to travel a number of interesting countries and experience several different cultures along the way. His range of job and travel experiences grant him expertise in hiking, camping, outdoors and fitness.