Cooling Pump Housing (18-3173-1) by Sierra®. What can be more fun and rewarding than boating on the open waters? This is an excellent solution for your boating needs. This product is great for use in all marine applications. It will satisfy the needs of both pleasure boat enthusiasts and ambitious yacht owners. Get this excellent product for your vessel and prepare to embark on a thrilling adventure.

Sierra 18-3173-1 Water Pump Housing

Sierra replacement water pump housing for Yamaha Outboards.

Interchangeable with:

Mallory
9-43252
Yamaha Outboard
61A-44311-00-00
61A-44311-01-00
6E5-44311-00-00