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Mercruiser Thermostat Housing

      • Sierra 18-3668 Thermostat Kit
        List Price: $19.99
        Starting At: $14.14

        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...

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      • Sierra 18-3647 Thermostat Kit Replaces 807252Q5
        List Price: $33.99
        Starting At: $23.99

        Mercruiser 160 Degree Thermostat Kit by Sierra Kit Includes: Sie-18-3649 Thermostat Sie-18-2844 Thermostat Cover Gasket Sie-18-2552 Thermostat Cover Gasket Sie-18-2553 Thermostat Cover Gasket Sie-18-7173 O-Ring Sie-18-2917 Thermostat Housing Gasket ...

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      • Sierra 18-3650 Thermostat Kit
        List Price: $23.49
        Starting At: $14.45

        Sierra 18-3650 Mercruiser 140 Degree Thermostat Kit  For Mercruiser Sterndrive engines using 140 degree thermostat. Fits 1998 & older MCM GM In-Line 4 & 6 cylinder engines. Kit Includes: (1) 18-2831 Thermostat Gasket (1) 18-3550...

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      • Sierra 18-3648 Thermostat Kit
        List Price: $26.49
        Starting At: $15.95

        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)...

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      • Sierra 18-3651 Thermostat Kit
        List Price: $20.99
        Starting At: $14.54

        Sierra 18-3651 Mercruiser 142 Degree Thermostat Kit Sierra high-quality engine parts are designed to meet OEM specifications. Temperature Rating: 142 degrees Kit Includes: (1) 18-2553 Thermostat Cover Gasket (1) 18-2554 Thermostat Cover...

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