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      Johnson Outboard Thermostats & Gaskets Product Listings

      • Sierra 18-3673 Thermostat Kit
        $60.99
        $43.89

        Sierra Thermostat Kit for Johnson and Evinrude V-4 Crossflow Outboard Engines Kit includes: Thermostats, Gaskets, Springs and Grommets   Applications: 80 HP Jet 1994-1995 85 HP 1978-1980 85 HP 1993-1995 88 HP 1987-1995 90 HP...

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      • Sierra 18-3544 Thermostat Replaces 0435491
        $34.39
        $24.69

        Sierra 18-3544 Johnson & Evinrude Thermostat Sierra high-quality replacement thermostat for Johnson/Evinrude Outboards. Interchangeable with: Johnson/Evinrude Outboard 435491 437090 Mallory 9-43032 9-43036

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      • Sierra 18-3545 Thermostat Replaces 0437090
        $27.39
        $19.69

        Sierra 18-3545 Johnson/Evinrude Thermostat Sierra high-quality engine parts are designed to meet OEM specifications. Temperature Rating: 130 Interchangeable with: Johnson/Evinrude Outboard 437090 Mallory 9-43031

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      • Sierra 18-0182-9 Thermostat Gasket
        $4.19
        $3.69

        Thermostat Gasket for Johnson Evinrude and Mercury by Sierra For Mercury Mariner, Johnson and Evinrude Outboards (Priced Per Pkg of 2) Replaces: Mercury - 27-62386001 OMC - 0310058 GLM - 30610 Mallory - 9-60002 Supersedes: 18-0182

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      • Sierra 18-3500 Thermostat
        $37.59
        $26.99

        Sierra 18-3500 Johnson/Evinrude Thermostat Sierra high-quality engine parts are designed to meet OEM specifications. Temperature Rating: 140 degrees Interchangeable with: GLM 13170 Johnson/Evinrude Outboard 394409 434137

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      • Sierra 18-3557 Thermostat Replaces 47594
        $38.79
        $32.19

        Sierra 18-3557 Thermostat Sierra replacement 143° thermostat for Chrysler/Force/US Marine, Johnson/Evinrude Outboards, Mercrusier Stern Drives, and Volvo Penta engines. Fits MCM GM in-line 6 cylinder Use with: 18-3669 Thermostat...

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      • Sierra 18-1507 Thermostat Seal
        $7.29
        $5.69

        Sierra Thermostat Seal Special Order est. 10 Days For use on Johnson/Evinrude Outboard Engines For:  60 degree v-4 & v-6 Replaces:  335981

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      • EMP 75-00456 Mercury / BRP Thermostat Kit
        $24.95
        $20.79

        EMP 75-00456 Mercury / BRP Thermostat Kit This Thermostat Kit is intended for use on Mercury and BRP outboard engines and meets all OEM requirements. Thermostat Kit Application: For Mercury Mariner 1975-1979 V6 135-200 HP Outboards For...

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      • Johnson - Evinrude 0337068 Thermostat Gasket 5 Pk
        $3.89
        $2.59

        Johnson - Evinrude 0337068 Thermostat Gasket 5 Pk Genuine OEM Johnson/Evinrude part. This item is sold in intervals of 5 Special Order Item.Special Order BRP-Johnson/Evinrude Marine Information: Additional Handling Time: Item transfers from an alternate...

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      • Johnson - Evinrude 0437090 T-Stat Assembly-Offshr
        $26.99
        $25.49

        Johnson - Evinrude 0437090 T-Stat Assembly-Offshr Genuine OEM Johnson/Evinrude part. Special Order Item.Special Order BRP-Johnson/Evinrude Marine Information: Additional Handling Time: Item transfers from an alternate warehouse requires an additional...

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      • Johnson - Evinrude 0434137 Thermostat Assembly
        $36.49
        $33.99

        Johnson - Evinrude 0434137 Thermostat Assembly Genuine OEM Johnson/Evinrude part. Special Order Item.Special Order BRP-Johnson/Evinrude Marine Information: Additional Handling Time: Item transfers from an alternate warehouse requires an additional...

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      • Johnson - Evinrude 0319665 Water Jacket Gasket
        $3.99
        $3.49

        Johnson - Evinrude 0319665 Water Jacket Gasket Genuine OEM Johnson/Evinrude part. 25/35HP Special Order ItSpecial Order BRP-Johnson/Evinrude Marine Information: Additional Handling Time: Item transfers from an alternate warehouse requires an...

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      Johnson OEM Engine Parts Finder

      Johnson Outboard Thermostats

      The boat thermostat is an often underappreciated component of every craft. This mechanism regulates engine temperature and ensures optimal performance. Boat engines run at max performance which can generate a lot of heat. Should the engine begin to overheat, thermostats provide the operator the first line of defense in preventing an expensive repair or possible replacement. In addition, the thermostat other assignment is to control emission levels so your boat stays regulation-compliant.

      Find the Parts Your Boating Life Needs

      Wholesale Marine carries dependable Johnson outboard thermostats, as well as all the replacement parts you need to keep your vessel running at the optimal performance: diaphragm gaskets, rubber valves, grommets, vernatherms, and all-inclusive kits can all be located online using our parts finder tool. All of our replacement Johnson outboard thermostats meet or exceed OEM specifications and are, of course, backed by a price match guarantee.

      At Wholesale Marine, we strive to be your number one trusted source for boat parts and supplies, so we take customer satisfaction seriously. Our customer service representatives are boat enthusiasts themselves and are ready to offer guidance on Johnson outboard thermostats. We are here Monday through Friday, from 9:00 AM until 6:00 PM, EST at (877) 388-2628 to assist. Through our Captain’s Loyalty Rewards program, free shipping on orders over $99, and same-day shipping, we are always looking to provide customers with an optimal shopping experience.