Sierra 18-3648 Mercruiser 160 Degree Thermostat Kit Sierra high-quality engine parts are designed to meet OEM specifications. Temperature Rating 160 Kit Contains 1 18-3649 Thermostat 1 18-2553 Thermostat Cover Gasket 1 18-2917 Thermostat Gasket Interchangeable with Mallory 9-43100 California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Engine Parts Wiser Yes Product MPN 18-3648 Product UPC 808282258825 Fast Ship In Stock Ships Today