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Description
Sierra 18-3531 Thermostat Housing
Sierra replacement thermostat housing for Mercruiser Sterndrives. Sierra engine parts are manufactured to meet or exceed OEM requirements.
Fits: MCM/MIE GM V-6 & V-8 (305, 350, 454 & 502 CID) engines w/closed cooling systems
Interchangeable with:
- GLM
- 13540
- Mallory
- 9-42501
- Mercruiser Sterndrive
- 807074A1
- 808064A1
- 861188A1
Special Order item.
California Residents: 
WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov
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