Mercury-Mercruiser 46-8M0113734 Water Pump Assembly

MERCRUISER V6 4.3L & SMALL BLOCK V8 RECRICULATION WATER PUMP ASSY INCLUDES GASKETS

Replacement water pump with housing 8M0113734 is for V6 (serial No. 1A603239 and below) and V8 (305, 350 and 377 cid) MerCruiser engines made by General Motors.

Keep your engine cool and running at peak performance with the Mercury-Mercruiser 46-8M0113734 Water Pump Assembly—a complete, OEM-engineered replacement designed for select MerCruiser sterndrive and inboard engines.

The raw water pump is vital to engine health, ensuring a consistent flow of cooling water to prevent overheating. The 46-8M0113734 comes fully assembled with the impeller, wear plate, seals, and housing already installed—making replacement faster and easier with guaranteed factory-fit precision.

Built to withstand the harshest marine conditions, this pump assembly features marine-grade materials that resist corrosion and wear, even in saltwater environments. It’s crafted to Mercury’s stringent OEM specifications to deliver optimal water flow and cooling efficiency across a wide range of engine loads.

This assembly is ideal for scheduled maintenance, pre-season servicing, or as a reliable fix for failing pump components. Whether you’re preparing for a long trip or just tuning up, the 8M0113734 water pump provides the confidence and cooling performance serious boaters demand.

Features:

• Genuine Mercury OEM Part #46-8M0113734

• Pre-assembled for quick, easy installation

• Includes impeller, wear plate, housing, seals, and internal hardware

• Designed for select MerCruiser sterndrive and inboard marine engines

• Marine-grade construction for maximum corrosion resistance

• Restores optimal engine cooling and reliability

Don’t compromise on your engine’s cooling system—choose the Mercury-Mercruiser 46-8M0113734 Water Pump Assembly for trusted performance and durability that lasts.