10 Best Attwood Automatic Bilge Pumps [2023 UPDATED RANKINGS]

Features :

• Reliably provides bilge water pumping for boats of any size
• Meets automatic switch pump requirements for any vessels 20 feet and over with sleeping accommodations
• Also convenient and useful for boats of any size
• Compact and durable package includes pump, wire seals, strainer, and mercury-free switch in one unit
• Installs quickly and easily in tight spaces, mounts horizontally only
• 12-volt, 1.5-amp draw pump is rated for 500 GPH performance at open flow (at voltage of 13.6 volts DC)
• Comes with a 29-inch length of 16-gauge caulked and tinned copper wire, and uses a ¾-inch interior diameter hose

Features :

• Innovative engineering and compact design to provide the most reliable bilge pumping performance
• Powerful and reliable pump is rated for 500 gallons per hour (gph) output at design voltage 13.6 volts DC, or 450 gph at nominal voltage of 12 volts DC
• Features premium-quality bearings and state-of-the-art brushes, alloys, and magnets
• Patented shaft seal prevents leaks caused by misalignment, caulked and tinned wiring eliminates wicking, prevents water damage, and resists corrosion
• 12-volt pump has a barbed ¾-inch outlet and is connected with 29-inch wire

Features :

• 500 GPH, 12V, Fuse size: 3A, Outlet type: 3/4″ & 1″ barbs, Check valve: yes, Wire length: 29 1/2″
• The easiest, most reliable automatic bilge pump ever designed
• The only automatic bilge pump that eliminates air-locks, Patented X-Air Impeller ejects trapped air in the pump and pipework
• Flexible Outlets: 90° rotatable elbow outlet allows users to install the pump anywhere in a full 360° orientation
• Single-Hand Pump Cartridge Release: Convenient when trying to access a pump located in a hard-to-reach area of the boat’s hull
• Universal Backwards Compatible Design: 7-pump mounting hole pattern for replacing any top bilge pump in its category
• SteadySwitch: Buoyancy control reduces cycling, draining the bilge not the battery
• No Pipe Or Hose Removal Required: Reduces the time that it takes to replace the cartridge
• Improved Motor Cooling/Heat Dissipation: Prevents overheating that may cause failures, such as blown fuse, leaking, etc.
• Includes straight outlet and check valve

Features :

• Innovative engineering and compact design to provide the most reliable bilge pumping performance
• Powerful, reliable pump is rated for 800 gallons per hour (gph) output at design voltage 13.6 volts DC, or 760 gph at nominal voltage of 12 volts DC
• Features premium-quality bearings and state-of-the-art brushes, alloys, and magnets
• Patented shaft seal prevents leaks caused by misalignment, caulked and tinned wiring eliminates wicking, prevents water damage, and resists corrosion
• 12-volt pump has a barbed ¾-inch outlet and is connected with 29-inch wire
• Boaters, boat-builders and dealers all want one thing from their bilge pumps: more power! And that’s what the Tsunami Series delivers with high-capacity, high-efficiency output
• Tsunami cartridge pumps have replaceable / interchangeable motor cores
• Makes servicing simple and quick

Features :

• Power – Max Continuous (Amps): 1.5. Volts: 12V.
• Operation: Automatic. Outlet Size: 3/4″.
• Gallons Per Hour: 500 GPH.
• Warranty: 3 Years.

Features :

• Reliably detects bilge water levels and activates or deactivates bilge pump as needed
• S3 Series switch incorporates proprietary Electronic Sensing technology for most precise operation
• Engineered to operate in any bilge water mixture consistently without failure
• 12-volt switch has 15-amp maximum pump amp draw, and connects using 36-inch wire
• Can be mounted on floor of bilge, directly to a stringer wall, or alongside pump basket without added brackets
• Compatible with all competitive products and is free of moving parts than can jam, break, or wear out
• White switch
• The S3 series digital bilge switch incorporates a proprietary solid state electronic sensing technology to detect bilge water levels and trigger pump activation
• Operates in any bilge water mixture consistently without failure
• You can rest ensured that your pump won’t be exposed to continuous cycling as the S3 switch won’t be fooled by splashing bilge water, chemicals, sludge build up or foam
• Can be mounted on the floor of the bilge directly to a stringer wall or alongside the basket of the pump without added components or brackets
• Directly compatible with all other competitive products. Equipped with fully sealed electronics that are completely protected from water or chemical damage. Free from moving parts that can jam up, break or wear out over time.

Features :

• Converts manual bilge pump into one that is controlled fully automatically
• Compact, low-profile design that mounts on any surface from horizontal up to a 24-degree angle
• Reliable mechanical switch that actuates pump motor at 2 inches water level
• 12- and 24-volt CE rated with a 36-inch wire connection
• Maximum amp draw is 12 amps (at 12-volt DC) or 6 amps (at 24-volt DC)
• Measures 4 ¼ inches L x 3 7/8 inches W x 1 3/8 inches H
• Sealed switch mechanism resists moisture, fume-ignition, and electrical shock

Features :

• The Attwood Sahara Bilge Pump is a durable, compact, and easy to install automatic bilge pump. The Sahara has everything contained in one compact yet durable package, making this pump a great option for tight spaces. This series of bilge pump features a 316 stainless steel motor shaft for corrosion resistance and a durable high-impact, glass-filled polyester impeller. The base of the pump has quick, one-handed removal for easy disassembly for cleaning.
• Pumps include 36″ lengths of 16-gauge caulked and tinned copper wire. An automatic-switch bilge pump is a requirement for any vessels 20’ especially those that accommodate overnight passengers and crew. All Attwood bilge pumps come with a 3 year manufacturer’s warranty.
• Mercury-free switch. Test knob for easy operational check Non-restrictive float movement. Larger filter area resists clogging
• Free flow of water around housing keeps motor cool. 316 Stainless Steel motor shaft for saltwater corrosion resistance. Durable high-impact, glass-filled polyester impeller
• Sahara S500 Part #: AMRA-4505-7, GPH at Open Flow: 500, GPH at 3.3′ Head: 350, Hose Size: 3/4″ I.D.

Features :

• The Attwood Sahara Bilge Pump is a durable, compact, and easy to install automatic bilge pump. The Sahara has everything contained in one compact yet durable package, making this pump a great option for tight spaces. This series of bilge pump features a 316 stainless steel motor shaft for corrosion resistance and a durable high-impact, glass-filled polyester impeller. The base of the pump has quick, one-handed removal for easy disassembly for cleaning.
• Pumps include 36″ lengths of 16-gauge caulked and tinned copper wire. An automatic-switch bilge pump is a requirement for any vessels 20’ especially those that accommodate overnight passengers and crew. All Attwood bilge pumps come with a 3 year manufacturer’s warranty.
• Mercury-free switch. Test knob for easy operational check Non-restrictive float movement. Larger filter area resists clogging
• Free flow of water around housing keeps motor cool. 316 Stainless Steel motor shaft for saltwater corrosion resistance. Durable high-impact, glass-filled polyester impeller
• Sahara S750 Part #: AMRA-4507-7, GPH at Open Flow: 750, GPH at 3.3′ Head: 625, Hose Size: 3/4″ I.D.

Features :

• Flow Rate (GPH): 750GPH; Volt: 12V; Current(A): 3.0A; Head(M): 3.0M
• Wire Lead(M): 1m; Outlet Diameter: 19mm/ 3/4-Inch; Width: Approx. 81mm
• Built-in float switch! (No separate float switch is needed)
• No power use until pump is activated by internal float switch (when water level rises)
• 4-Year Warranty!