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Add to CartSierra replacement thermostat seal for use with Johnson/Evinrude Outboards. All Sierra aftermarket engine parts are manufactured to meet or exceed OEM requirements.
Interchangeable with:
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Sierra Thermostat Seal Special Order est. 10 Days For use on Johnson/Evinrude Outboard Engines For: 60 degree v-4 & v-6 Replaces: 335981
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Sierra 18-3623 Thermostat (Seal Included) Sierra high-quality engine parts are designed to meet OEM specifications. For use on Yamaha Outboards. Temperature Rating: 122 Degrees...
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Sierra 18-3632 Thermostat Sierra high-quality replacement thermostat for Yamaha and Suzuki Outboards. Temperature Rating: 140°F / 60°C Interchangeable with: Suzuki...
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Sierra 18-43017 Thermostat Sierra replacement thermostat for Indmar GM and Ford Raw Water Cooled Engines. Fits: MCM 496 Mag & HO and MIE 8.1L & HO 160° Interchangeable...
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