Mercury-Mercruiser 98-8M0137221 Heavy Duty Sea Water Pump Impeller Kit

Maintain peak engine cooling and extend the life of your marine engine with the Mercury-Mercruiser 98-8M0137221 Heavy Duty Sea Water Pump Impeller Kit. This high-quality OEM kit is specifically designed for use with crankshaft-mounted sea water pumps in a range of MerCruiser inboard and sterndrive applications.

The impeller is the heart of your engine’s raw water cooling system. Over time, wear or damage to the impeller can lead to reduced water flow and dangerous overheating. This heavy-duty replacement kit includes a premium neoprene impeller engineered for superior durability and performance in harsh marine environments. With reinforced construction and improved wear resistance, it ensures maximum water flow and long-lasting protection for your engine.

This complete service kit includes everything you need for proper impeller replacement—impeller, gaskets, O-rings, and lube—making it ideal for both routine maintenance and urgent repairs. Whether you’re prepping for a new season or addressing cooling issues, this kit delivers peace of mind and reliable performance.

Genuine Mercury-Mercruiser parts guarantee a perfect fit and OEM-level reliability, helping to avoid the risks of aftermarket alternatives. Designed to match factory specs, this kit ensures your engine’s cooling system works exactly as intended.

Features:

• Mercury OEM Part #98-8M0137221

• Heavy-duty impeller for crankshaft-mounted pumps

• Includes all required gaskets, O-rings, and lubricant

• Enhanced durability and long service life

• Compatible with select MerCruiser inboard and sterndrive engines

Don’t take chances with your cooling system—use genuine Mercury parts to ensure the best performance on the water.

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