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      • Sierra 18-3652 Thermostat Kit
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        Sierra 18-3652 Thermostat Kit

        $35.49
        $24.99

        Sierra 18-3652 Mercruiser 160 Degree Thermostat Kit Sierra high-quality replacement thermostat kit for Mercruiser Stern Drives. 160 Degree Temperature Rating Kit Contains: (1) 18-2555 Thermostat Cover Gasket (1) 18-2843 Thermostat Gasket (1)...

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      • Sierra 18-0487 Intake Gasket
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        Sierra 18-0487 Intake Gasket

        $113.49
        $79.49

        Sierra 18-0487 Intake Gasket Sierra 18-0487 Intake Gasket fits MCM 262 Mag & 4.3L/LX/LH/LXH (Gen+) (1996 & up) Interchangeable with: Mallory 9-61214 Mercruiser Stern Drive 27-8243261 27-824326002

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      • Sierra 18-0403 Intake Gasket Kit
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        Sierra 18-0403 Intake Gasket Kit

        $113.99
        $79.99

        Sierra 18-0403 Intake Gasket Kit - Special Order est. 10 Days Interchangeable with: Mallory 9-61217 Mercruiser Stern Drive 27-52571 27-61782 27-805722A1 27-812712  

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      • Sierra 18-2553-9 Thermostat Cover Gasket (Priced Per Pkg Of 2)
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        Sierra 18-2553-9 Thermostat Cover Gasket (Pkg Of 2)

        $5.99
        $4.99

        Sierra 18-2553-9 Thermostat Cover Gasket for Mercruiser Stern Drives (Pkg Of 2) Sierra replacement Mercruiser thermostat cover gasket. Fits: MCM/MIE GM V-6 & V-8 engines w/older style 2 piece thermostat housing Package of...

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      • Sierra 18-0672-9 Exhaust Elbow Gasket (Priced Per Pkg Of 2)
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        Sierra 18-0672-9 Exhaust Elbow Gasket (Pkg Of 2)

        $32.49
        $24.49

        Sierra 18-0672-9 Exhaust Elbow Gasket (Priced Per Pkg Of 2) Sierra replacement exhaust elbow gasket for Mercruiser Stern Drives. Fits: GM V-6 & V-8 with center rise outlet exhaust manifold For: Closed cooling Interchangeable...

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      • CLEARANCE
        Sierra 18-1210 End Cap To Manifold Gasket
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        Sierra 18-1210 End Cap To Manifold Gasket

        $0.70
        $0.47

        Sierra 18-1210 End Cap To Manifold Gasket Sierra high-quality engine parts are designed to meet OEM specifications. Fits MCM 120 & 160 Interchangeable with: Barr MC472739923 GLM 31420 Mallory 9-61409 Mercruiser Stern...

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      • Sierra 18-0667 Connector Cover Gasket
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        Sierra 18-0667 Connector Cover Gasket

        $0.99
        $0.80

        Sierra 18-0667 Connector Cover Gasket Sierra high-quality engine parts are designed to meet OEM specifications. For use on Mercruiser Stern Drives. Interchangeable with: GLM 32160 Mercruiser Stern Drive 27-995061 27-99506

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      • CLEARANCE
        Sierra 18-3567 Rubber Valve
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        Sierra 18-3567 Rubber Valve

        $0.85
        $0.57

        Sierra 18-3567 Rubber Valve (V6 Crossflow) Sierra replacement rubber valve for Johnson/Evinrude V6 Crossflow. Sierra replacement engine parts are manufactured to meet or exceed OEM requirements. Interchangeable with: GLM 46140 Johnson/Evinrude...

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      Mercruiser OEM Engine Parts Finder

      Mercruiser Thermostats and Gaskets

      Thermostats regulate engine temperature for optimal performance, so it is important that you do not have a faulty one. When it comes time for replacement, we carry Mercruiser thermostat kits, Mercruiser thermostat replacements, and Mercruiser rubber valves. All our Mercruiser thermostats and gaskets are Sierra brand. Sierra aftermarket parts are manufactured to meet OEM requirements.