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Add to CartSierra replacement thermostat for Crusader and Mercruiser engines.
Fits: 470/485 models (s/n 6218036 and below)
Interchangeable with:
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Sierra 18-3556 Thermostat Sierra replacement Thermostat for Mercury and Chrysler/Force/US Marine engines. Size: 3/4" Temperature Rating: 130°F Interchangeable with: Chrysler/Force/US...
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Sierra 18-3550 Mercruiser 140 Degree Thermostat Sierra high-quality engine parts are designed to meet OEM specifications. For use on Mercruiser Stern Drives and Chrysler/Force/US Marine engines...
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Sierra 18-3557 Thermostat Sierra replacement 143° thermostat for Chrysler/Force/US Marine, Johnson/Evinrude Outboards, Mercrusier Stern Drives, and Volvo Penta engines. Fits MCM GM in-line 6...
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Sierra 18-3554 OMC 160º Degree Thermostat Sierra 18-3554 Thermostat has a 160 Degree Thermostat rating and is for use on OMC Inboards and OMC Stern Drives. Interchangeable...
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