Mercury Outboard Thermostats & Gaskets

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Parts Selection Guide

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Prop Selection Guide

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      • Sierra 18-0380 Thermostat Gasket
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        Sierra 18-0380 Thermostat Gasket

        $1.99

        Sierra 18-0380 Thermostat Gasket for Mercury Outboards Sierra replacement Mercury thermostat gasket. Interchangeable with: GLM 32920 Mercury Marine 27-83940 27-83940M

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      • Sierra 18-0768 Wear Plate Gasket
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        Sierra 18-0768 Wear Plate Gasket

        $1.49
        $0.99

        Sierra 18-0768 Wear Plate Gasket - Special Order est. 10 Days Interchangeable with:   Mercury Marine 27-84024 27-84024M Yamaha Outboard 682-44315-00-00 682-44315-A0-00  

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      • Sierra 18-2919-9 Water Pump Gasket (Priced Per Pkg Of 2)
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        Sierra 18-2919-9 Water Pump Gasket (Pkg Of 2)

        $5.99
        $5.49

        Sierra 18-2919-9 Water Pump Gasket (Pkg Of 2) Sierra replacement water pump gasket for Mercury and Mercruiser engines. Package of 2 Interchangeable with: GLM 31050 Mallory 9-60031 Mercruiser Stern Drive 27-426311 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.