Johnson Pump 500 GPH Motor Cartridge Only

The Johnson Pump 500 GPH Motor Cartridge Only (MPN 28552) is a direct-replacement motor assembly designed for rapid service and maintenance of bilge pump systems in marine tactical platforms and emergency response vessels. This 12-volt motor cartridge is engineered for operators who require reliable fluid management in high-stress aquatic environments where equipment downtime directly impacts mission capability. Whether deployed for maritime law enforcement, coast guard operations, or tactical water insertion support, this cartridge delivers the proven dependability Johnson Pump is known for across military and civilian maritime applications.

The 500 GPH motor cartridge operates at 12 volts DC, enabling seamless integration into standard marine electrical systems found aboard patrol boats, assault craft, and support vessels. Its modular cartridge design allows field replacement without requiring complete pump disassembly—a critical advantage in austere or time-sensitive environments where you cannot afford extended equipment downtime. The motor's compact footprint (6 x 3 x 8 inches) and lightweight construction (0.6 lbs) minimize installation complexity while the impeller design facilitates quick debris clearing, reducing maintenance intervals. Johnson Pump's engineering ensures consistent flow rates and pressure delivery across operational temperature ranges typical of marine duty cycles.

This motor cartridge serves operators maintaining Johnson Pump bilge systems aboard tactical, commercial, and government vessels where fluid evacuation is mission-critical. Compatible with existing Johnson Pump 500 GPH housing assemblies, the cartridge swap can be completed in minutes with basic hand tools, reducing vessel downtime during pre-deployment maintenance cycles. Stocking this replacement cartridge ensures you maintain operational readiness without waiting for supply chain delays—essential for units conducting frequent water-based operations. Installation requires no specialized equipment, making it ideal for field-level maintenance protocols in forward-deployed environments.