Mercury Outboard Thermostats & Gaskets

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      • Sierra 18-3553 Thermostat Replaces 75692
        $25.99
        $19.99

        Sierra 18-3553 Mercury Thermostat The Sierra 18-3553 Thermostat has a 143°F temperature rating. For use on Mercury Marine engines. Interchangeable with: GLM 13010 Mallory 9-43019 Mercury...

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      • Sierra 18-3569 Thermostat Kit Replaces 803061T1
        $32.49
        $22.99

        Sierra 18-3569 Mercury Thermostat Kit  Sierra replacement thermostat kits are designed to meet OEM specifications. This kit fits various Mercury/Mariner 70-125 HP 2 cycle outboards (1987 and newer). Temperature rating: 120°F Kit...

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      • Sierra 18-3549 Thermostat Replaces 14586
        $27.49
        $19.49

        Sierra 18-3549 Thermostat for Mercury Sierra replacement thermostat for Mercury Marine engines. Temperature Rating: 120°F Use with: 18-3569 Thermostat Kit 18-43052 Thermostat Kit Interchangeable...

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      • Sierra 18-3606 Thermostat Kit
        $172.49
        $130.99

        Sierra 18-3606 Mercury Thermostat Kit Sierra high quality replacement engine parts are designed to meet OEM specifications. Temperature Rating: 130° F Kit Includes: (2) 18-3535 Thermostat (2) 18-3675 Thermostat Cover Gasket

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      • Mercury - Mercruiser 27-802699002 Gasket
        $10.79
        $8.99

        Mercury - Mercruiser 27-802699002 Gasket Genuine OEM Mercury-Mercruiser part. Fits: 8 HP Carb (209cc) - [0R042475 & Up] 8 HP Carb (209cc) - [0P325500 & Up] 9.9 HP Carb (209cc) - [0R042475 & Up] 9.9 HP Carb (209cc) - [0R042475 &...

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      • Mercury - Mercruiser 803061T-1 Thermostat Kit
        $33.49
        $28.99

        Mercury - Mercruiser 803061T-1 Thermostat Kit Includes 120 degree thermostat, thermostat gasket, washer and cover gasket Fits various Mercury/Mariner 70-125 hp. 2 cycle outboards (1987 and Newer) See application chart for specific engine models.

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      • Sierra 18-3675 Thermostat Cover Gasket
        $3.99
        $2.99

        Sierra 18-3675 Thermostat Cover Gasket Sierra replacement thermostat cover gasket for Mercury Marine engines. For: 200-250 Hp 3.0L, (DFI and EFI) Interchangeable with: Mercury Marine 27-850318 27-8503181 Mercury Sport...

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      • Sierra 18-0345 Water Pump Gasket
        $6.99
        $4.99

        Sierra 18-0345 Water Pump Gasket Sierra replacement water pump gasket for Mercury Marine, Chrysler/Force/US Marine engines. For Mercury 25-60 HP Outboards 2, 3 cyl & 4-Stroke models Interchangeable with: Chrysler/Force/US...

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      • Sierra 18-3631 Thermostat With Housing
        $180.49
        $126.49

        Sierra 18-3631 Thermostat With Housing Sierra replacement thermostat for Mercury Marine engines. Includes thermostat and housing. Fits: 135-300 Verado Temperature Rating: 144°F Interchangeable with: Mercury Marine 892864T04

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      • Sierra 18-0970 Fuel Pump Base Gasket
        $0.58
        $0.44

        Sierra 18-0970 Fuel Pump Base Gasket Sierra replacement fuel pump base gasket for use on Chrysler/Force/US Marine, Mercury Marine, and Mercury Sport Jet engines. Interchangeable with: Chrysler/Force/US...

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      • Sierra 18-0835 Thermostat Gasket
        $5.49
        $3.99

        Sierra 18-0835 Thermostat Gasket Sierra thermostat gasket for Mercury and Yamaha Outboards. Interchangeable with: Mercury Marine 27-824853 27-8248531 27-8M0177107 Yamaha...

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      • Sierra 18-0339 Thermostat Gasket
        $6.99
        $5.49

        Sierra 18-0339 Thermostat Gasket Sierra replacement thermostat gasket for Mercury Marine engines. GLM 32820 Mallory 9-60004 Mercury Marine 27-43006 2 27-430068 27-430067 27-430066 27-430065 27-430063 27-430061

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      • Sierra 18-2564-1 Impeller Gasket
        $15.99
        $10.99

        Sierra 18-2564-2 Impeller Gasket Sierra high-quality engine parts are designed to meet OEM specifications. For use on Chrysler/Force/US Marine, Honda Outboards, Mercruiser Stern Drives, and Mercury Marine engines. Interchangeable...

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      • Sierra 18-43052 Thermostat Kit
        $49.99
        $34.99

        Sierra 18-43052 Thermostat Kit Sierra replacement thermostat kit for Mercury Outboards. Temperature Rating: 120°F Fits: Various Mercury/Mariner 6-25 hp 2 cycle outboards Interchangeable with: Mallory 9-43052 Mercury...

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      Mercury OEM Engine Parts Finder

      Mercury Outboard Thermostats and Gaskets

      When it comes to your Mercury Outboard, thermostats are an important part for controlling the temperature of your engine. As the temperature rises, the thermostat opens and allows cooling water to flow through the outboard. Keep your outboard from overheating with our selection of Mercury Outboard thermostat kits, thermostats, and gaskets. We carry the Sierra aftermarket parts, all of which meet OEM specifications.