Sierra 18-3668 Thermostat Kit for Mercruiser Stern Drives For Mercruiser engines using 142 degree thermostats Fits 1983 newer GM V-6 V-8 engines with standard cooling Includes 1 Thermostat Cover Gasket 18-2552 1 Thermostat Cover Gasket 18-2553 1 Thermostat Cover Gasket 18-2554 1 Thermostat 18-3551 1 O-Ring 18-7173 Replaces Mallory 9-43150 GLM 13390 Mercruiser 807252T4 807252Q4 807252T7 California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product T