Johnson Pump 09-1028BT-1 F7B Impeller (MC97)

The Johnson Pump 09-1028BT-1 F7B Impeller (MC97) is a genuine OEM replacement impeller designed for raw water cooling systems on various marine engines, including the Mercruiser MC97 platform. This compact and lightweight replacement part serves as essential insurance against overheating and engine damage in saltwater, brackish, or debris-laden freshwater environments.

Johnson Pump impellers are crafted from precision-molded elastomer materials that flex and mesh within the pump housing, effectively moving cooling water through the engine block and exhaust manifold. The F7B designation indicates a specific geometry tailored to meet the displacement and flow requirements of compatible engines, ensuring optimal cooling pressure and minimal cavitation during operation.

Vessels equipped with MC97 engines benefit from preventive impeller replacement every 300 operating hours or annually, whichever comes first, to avoid elastomer fatigue and potential coolant loss. The Johnson Pump 09-1028BT-1 F7B Impeller installs easily as a direct replacement via the pump cover plate, requiring no special tools for those familiar with basic marine engine service.