Sierra 18-3171 Water Pump Housing for Yamaha Outboard Motors

The Sierra 18-3171 Water Pump Housing is a precision-engineered replacement component designed specifically for Yamaha outboard motors. This housing serves as the outer shell that encases the water pump, providing critical protection and structural support for the cooling system.

Key Features:

• Replaces Yamaha OEM part number 688-44311-01-00 and Mallory 9-43251
• Meets or exceeds original equipment specifications
• White marine-grade construction for durability in harsh saltwater and freshwater environments
• Houses thermostats and regulates coolant flow accurately
• Direct replacement for OEM housing - no modifications required

Application:

Fits Yamaha outboard motors including 70HP, 75HP, 80HP, 90HP, and 115HP models. Specific applications include Yamaha 60HP (2004-up), 70HP (2004-up), 75HP (1997-2000), 80HP (1997), 85HP (1989-1991), and 90HP models (1984-1991 and 1997-up).

Part of Comprehensive Repair Kits:

This housing is included in Sierra's 18-3371 Water Pump Kit with Housing, which contains all necessary components for a complete water pump rebuild including gaskets, impeller, O-rings, and hardware.

Sierra Marine is known for manufacturing high-quality aftermarket parts that meet stringent marine industry standards. This water pump housing ensures reliable cooling system performance, helping prevent engine overheating and extending the service life of your Yamaha outboard motor.