Sierra 18-3615 Raw Water Thermostat, Replaces 3587597
- Brand:
- Sierra
- Part no:
- 18-3615
Where to buy
View on Amazonpaid link
This is the Sierra 18-3615 thermostat for raw water cooled engines. It replaces part number 3587597, shown as VP 3587597 in the product name. Sierra points buyers to its own catalog for current application information, so check the application there before fitting it. The part carries Sierra's number 18-3615.
Our take
Being a raw water cooled thermostat that replaces 3587597, this part is matched by cooling type and original number. The right check is to compare your engine's original number to 3587597 and use Sierra's catalog for the current application.