Johnson Pump 28572 Cartridge Motor for 750 GPH Bilge Pumps, Model 32702, 12 Volt

The Johnson Pump 28572 is a replacement cartridge motor built for 750 GPH bilge pumps, specifically the Model 32702 cartridge pump. This 12-volt cartridge motor drops into the existing pump housing to restore full pumping performance once the original motor cartridge wears out or fails, without requiring replacement of the entire bilge pump assembly. It is constructed of black plastic and is rated for a maximum flow rate of 12.5 gallons per minute, matching the output of the 750 GPH pump family it is designed for.

As a cartridge-style motor, the 28572 is designed for straightforward swap-in replacement: the worn cartridge is removed from the pump base and the new Johnson Pump 28572 cartridge is installed in its place, reconnecting to the existing wiring and pump housing. This design lets boat owners restore bilge pump performance quickly rather than re-plumbing a new pump. Before ordering, confirm that your existing pump is the 750 GPH model that accepts the 32702 cartridge, since cartridge motors are matched to specific pump housings and are not universally interchangeable across different GPH ratings.

Specifications

• Brand: Johnson Pump
• Manufacturer Part Number: 28572
• Manufacturer Model Number: 3001.3483
• Product Type: Cartridge Motor
• Compatible With: 750 GPH Bilge Pump, Model 32702
• Voltage: 12 Volts
• Maximum Flow Rate: 12.5 Gallons Per Minute
• Power Source: Corded Electric
• Material: Plastic
• Color: Black
• Weight: 0.69 pounds
• Dimensions: 7.5 inches (L) x 6 inches (W) x 3 inches (H)
• UPC: 729321285728
• Country of Origin: China

Fitment

• 750 GPH Bilge Pump, Model 32702

Frequently Asked Questions

What pump does the Johnson Pump 28572 fit? The 28572 is the cartridge motor for the 750 GPH bilge pump, Model 32702, and is designed to replace the motor cartridge in that specific pump housing.

Is this a full pump or just the motor? This is the replacement cartridge motor only, not a complete bilge pump. It swaps into the existing 750 GPH Model 32702 pump housing once the original cartridge wears out.

What voltage is the Johnson Pump 28572? 12 volts. The 28572 cartridge motor is built to run on a 12-volt marine electrical system, matching the 750 GPH pump it services.

What is the maximum flow rate of this cartridge motor? 12.5 gallons per minute is the maximum flow rate for the Johnson Pump 28572, consistent with the 750 GPH bilge pump rating it is made for.

What material is the cartridge housing made from? Black plastic construction is used for the Johnson Pump 28572 cartridge motor housing.

How much does the 28572 cartridge motor weigh? 0.69 pounds is the weight of the Johnson Pump 28572 cartridge motor.

What are the dimensions of the replacement cartridge? The Johnson Pump 28572 measures 7.5 inches long by 6 inches wide by 3 inches high.

How do I know if my bilge pump takes this cartridge? Check that your bilge pump is the 750 GPH model with pump designation 32702 before ordering the 28572, since cartridge motors are matched to a specific pump housing and GPH rating.

Is the Johnson Pump 28572 an OEM part or aftermarket? The 28572 is the genuine Johnson Pump manufacturer cartridge motor, not a generic aftermarket substitute, and carries the manufacturer's own part number 28572.

How is the cartridge motor installed? The worn cartridge is removed from the base of the 750 GPH pump housing and the new Johnson Pump 28572 cartridge is installed in its place, reconnecting to the existing pump wiring.

What is included when I order the 28572? One Johnson Pump 28572 cartridge motor is included, intended to replace the motor cartridge inside a 750 GPH Model 32702 bilge pump.

Is the 28572 corded or does it need separate wiring installed? The Johnson Pump 28572 is a corded electric cartridge motor that connects using the existing wiring already present in the 750 GPH pump housing.