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Mercury Outboard Thermostats & Gaskets

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Parts Selection Guide

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      • Sierra 18-3553 Thermostat Replaces 75692
        $20.99
        $15.99

        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
        $27.99
        $19.49

        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
        $26.99
        $18.99

        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
        $257.99
        $195.99

        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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      • Sierra 18-3631 Thermostat With Housing
        $170.99
        $119.99

        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

        Out of stock

      • Sierra 18-0345 Water Pump Gasket
        $4.99
        $3.99

        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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      • Thermostat Kit, Mercury - Mercruiser 803061T-1
        $43.49
        $30.49

        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 18-2509 Carb Mounting Gasket Replaces 27-67751
        $1.99
        $1.49

        Sierra 18-2509 Mercury Carburetor Mounting Gasket Sierra high-quality engine parts are designed to meet OEM specifications. Interchangeable with: Mercury Marine 27-67751 GLM 31690 Application: Mercury Marine Magnum...

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      • Sierra 18-0936 Relief Valve Plate Gasket
        $2.49
        $1.99

        Sierra 18-0936 Relief Valve Plate Gasket Interchangeable with: GLM 31990 Mallory 9-60057 Mercury Marine 27-78690 27-78690002 27-67624 Mercury Sport Jet 27-78690 27-78690002

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      • Mercury - Mercruiser 27-802699002 Gasket
        $15.48
        $12.90

        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 75692 Thermostat - 147°F
        $28.90
        $24.08

        Mercury - Mercruiser 75692 Outboard Thermostat - 147°F Genuine OEM Mercury-Mercruiser part. Replacement thermostat for select 135 hp through 200 hp Mercury and Mariner EFI and carburetor fueled 2-cycle, V-6 outboards. The Mercury 75692 thermostat is...

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      • Sierra 18-2007 Oil Seal Replaces 26-94038
        $14.99
        $10.49

        Sierra 18-2007 Oil Seal Sierra high quality aftermarket parts are manufactured to meet or exceed OEM requirements. O.D.: 1.500" Shaft Size: 1.000" Width: 0.312" Interchangeable with: GLM 85600 Mallory 9-76103 Mercruiser Stern...

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      • Mercury - Mercruiser 14586A-3 Thermostat Kt-120
        $81.99
        $56.99

        Mercury - Mercruiser 14586A-3 Thermostat Kt-120 Includes 120 degree thermostat and gaskets Fits various Mercury/Mariner 6-25 hp. 2 cycle outboards. See applications chart for specific engine models.

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      • Sierra 18-0339 Thermostat Gasket
        $6.99
        $4.99

        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 18-2559 Impeller Gasket
        $3.99
        $2.99

        Sierra 18-2559 Impeller Gasket Sierra high-quality engine parts are designed to meet OEM specifications. For Mercury 6/8/9.9/15 Interchangeable with: Chrysler/Force/US Marine 27-19202 GLM 31230 Mercury...

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      • Mercury - Mercruiser 14586A-4 Thermostat Kt-120
        $136.49
        $85.99

        Mercury - Mercruiser 14586A-4 Thermostat Kt-120 Includes 120 degree thermostat, gaskets, and poppet value Fits various Mercury/Mariner 50/55/60 hp. 2 cycle outboards. See application chart for specific engine models.

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      • Sierra 18-0622 Lower Wear Plate Gasket
        $4.99
        $3.99

        Sierra 18-0622 Lower Wear Plate Gasket Sierra replacement lower wear plate gasket for Chrysler/Force/US Marine and Mercury Marine engines. Sierra engine parts are manufactured to meet or exceed OEM requirements. Interchangeable...

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      • Sierra 18-0624 Attenuator Gasket
        $6.49
        $5.99

        Sierra 18-0624 Attenuator Gasket Sierra replacement attenuator gasket for Mercury Marine engines. Sierra aftermarket engine parts are manufactured to meet or exceed OEM requirements. Interchangeable with: GLM 37520 Mercury...

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      • Sierra 18-0970 Fuel Pump Base Gasket
        $1.49
        $0.87

        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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      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.