Sierra 18-3323 Water Pump Kit for Mercury/Mariner Outboards
- Brand:
- Sierra
- Part no:
- 18-3323
Where to buy
View on Amazonpaid link
The Sierra 18-3323 is a water pump kit for Mercury and Mariner outboard engines. It replaces 46-73640A2. The kit contains an impeller (18-3007), an upper pump housing (18-3118) and a water pump base (18-3423), along with a water pump base gasket (18-2841) and O-rings such as the 18-7158.
Our take
The 18-3323 packs the impeller, upper pump housing and water pump base together with gaskets and O-rings, so it covers more than an impeller swap. It is for Mercury/Mariner outboards and replaces 46-73640A2.