Sierra 18-3002 Water Pump Impeller for Johnson Evinrude Outboards

The Sierra 18-3002 is a premium replacement water pump impeller designed specifically for Johnson and Evinrude outboard motors ranging from 10-35 HP. This neoprene impeller is a critical component of your marine engine's cooling system, ensuring proper water flow to prevent overheating and maintain optimal engine performance.

Key Specifications:

• 6-blade neoprene construction for durability and flexibility
• 2-3/4" outer diameter with 7/8" depth
• 3/4" shaft diameter bore
• Engineered to meet or exceed OEM specifications

OEM Replacement Numbers:

• Johnson/Evinrude OMC: 375638, 775518, 0775518, 777829

Sierra impellers are manufactured in an ISO9001-certified facility using premium compounds formulated for superior performance in the harsh marine environment. Regular impeller replacement is essential preventive maintenance—experts recommend inspection annually or every 100 hours of operation. Running an engine with a damaged impeller or running the pump dry can cause catastrophic overheating, making it wise to keep a spare on board. This impeller features precision molding for reliable OEM fit and function, providing boaters and marine technicians with confidence in every installation.