Sierra 3051 Johnson/Evinrude Impeller

The Sierra 3051 (18-3051) Impeller is a direct-fit replacement water pump impeller for Johnson and Evinrude outboard engines. Manufactured to OEM specifications, this neoprene impeller restores proper cooling water flow through the lower unit water pump, protecting the powerhead from overheating damage.

Parts Desk Insight Best Use

This impeller is the correct service part for routine water pump maintenance on Johnson/Evinrude outboards. Best practice is to replace the impeller every 23 seasons or 200 hours of operation whichever comes first regardless of visible wear. Impeller vanes can harden and lose flexibility before showing obvious damage, leading to reduced cooling flow and potential engine overheating. Always replace during lower unit service or anytime the gearcase is opened.

Tip: For a complete water pump service, pair this impeller with a full water pump repair kit that includes the housing, wear plate, gaskets, and seals. See compatible kits below.

Compatible Water Pump Kits

• Sierra Marine Water Pump Kit 18-3380 Johnson/Evinrude 4075HP
• Sierra Marine Water Pump Kit 18-3390 Johnson/Evinrude 85300HP V4/V6
• Quicksilver 8M6012793 Water Pump Kit Johnson/Evinrude 90175HP
• Quicksilver 8M6012794 Impeller Repair Kit Johnson/Evinrude 90175HP

Refer to the Sierra Marine catalog or your engine service manual to confirm fitment for your specific engine model and year.