Sierra 18-3600 Sea Water Pump for MerCruiser
- Brand:
- Sierra
- Part no:
- 18-3600
Where to buy
View on Amazonpaid link
Sierra 18-3600 is a sea water pump for MerCruiser engines, listed as a replacement for Mercury 46-72774A32. It is listed for V8 engines with a V-belt and a 2 piece pump. Sierra points to repair kit 18-3155 for this pump. Its fit is described only by those engine details, with nothing further on size or flow, so check your belt and pump layout before replacing yours.
Our take
The V-belt and 2 piece pump condition is what to check on the 18-3600: it is listed for V8 engines with that setup and replaces Mercury 46-72774A32. Sierra also names repair kit 18-3155 for it, so a rebuild kit exists for this pump.