Sierra Thermostat Kit 18-3676
- Brand:
- Sierra
- Part no:
- 18-3676
Where to buy
View on Amazonpaid link
This is the Sierra 18-3676 thermostat kit. It bundles an O-ring, a gasket and the thermostat itself, so the seal parts come with the valve when the cooling circuit is opened up. Sierra lists it as a replacement for OEM number 3853983-9. The maker points to its own catalog for the full list of applications, so check the engine fit there before you commit to it.
Our take
The kit bundles an O-ring, a gasket and the thermostat, so the seals are new whenever the old valve comes out. Sierra points to its own catalog for application details, so confirm the engine match there before fitting it.