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Mercury Outboard Thermostats

Shop Mercury Outboard Thermostats

Find quality thermostats and thermostat kits for Mercury outboards, available from Genuine OEM, Sierra, YMM and Boaters World. Designed to suit a wide range of Mercury models including 2-stroke, 4-stroke, Verado, SeaPro, Optimax and ProXS, our thermostats help maintain optimal engine temperature for improved performance, fuel efficiency and long-term reliability.

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  • Mercury 6-25HP 14586A3 2 Stroke Thermostat Kit

    Mercury 6-25HP 14586A3 2 Stroke Thermostat Kit

    Mercury 6-25HP 14586A3 2 Stroke Thermostat Kit Suits 6-25HP 2 stroke Mercury and Mariner outboards. 120 degree F Contains: 18-0182-9 18-0323 18-3549 Replaces: 9-43052 14586A3 75692A10 75692A11 75692A9

    $90.70
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  • Mercury 75692 135-200HP 2 Stroke V6 Thermostat

    Mercury 75692 135-200HP 2 Stroke V6 Thermostat

    Mercury 75692 135-200HP 2 Stroke V6 Thermostat 143 Degree F thermostat for Mercury EFI and carb 135-200HP 2 Stroke V6 outboards  Replaces: 9-43019 13010 62981 68850 75692 75692B 75-00403

    $47.14
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  • Mercury 27-887978 Thermostat Seal Replacement Mercury 27-887978 Thermostat Seal Replacement

    Mercury 27-887978 Thermostat Seal Replacement

    Mercury 27-887978 Thermostat Seal Replacement Replaces Mercury Part No: 27-62386, 27-62386001, 27-887978, 62386, 62386001, 62386B This is a Premium Aftermarket Thermostat Seal.

    $2.66
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  • Genuine Mercury 27-19205002 Thermostat Gasket Genuine Mercury 27-19205002 Thermostat Gasket

    Genuine Mercury 27-19205002 Thermostat Gasket

    Genuine Mercury 27-19205002 Thermostat Gasket For Mercury 6, 8, 9.9, 10 and 15HP 2 stroke outboards with 8M0039352 thermostat cover. Replaces - 14672, 19205 and 192051

    $5.09
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  • Genuine Mercury 27-81031 Thermostat Gasket Genuine Mercury 27-81031 Thermostat Gasket

    Genuine Mercury 27-81031 Thermostat Gasket

    Genuine Mercury 27-81031 Thermostat Gasket 20C, 25C and 30A HP Mercury outboard thermostat. Also suits Yamaha models. Replaces - Yamaha 655-12414-A1, 27-81031M and 18-0232

    $5.28
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  • Genuine Mercury 8M0177107 Thermostat Housing Gasket Genuine Mercury 8M0177107 Thermostat Housing Gasket

    Genuine Mercury 8M0177107 Thermostat Housing Gasket

    Genuine Mercury 8M0177107 Thermostat Housing Gasket Suits a wide range of Mercury 4 stoke 9.9-60HP models. 2 cylinder carb 15, 25, 30 3 cylinder carb, 30HP EFI 3 cylinder, 35HP EFI Jet 4 cylinder, 40HP carb & EFI 3 cylinder. 40HP EFI SeaPro 4...

    $16.63
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  • Mercury 825212A1 Thermostat Replacement Mercury 825212A1 Thermostat Replacement

    Mercury 825212A1 Thermostat Replacement

    Mercury 825212A1 Thermostat Replacement Replaces Mercury part 825212A1, 855676A1 Does not include thermostat gasket 27-8M0177107 order seperately Suits Mercury engines: 30, 40 HP EFI 3 Cylinder 4 Stroke models (SN: 1C456300 & up) This is an...

    $35.95
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  • Mercury 804540 Thermostat Replacement Mercury 804540 Thermostat Replacement

    Mercury 804540 Thermostat Replacement

    Mercury 804540 Thermostat Replacement Replaces Mercury part 804540 Suits Mercury engines: 2, 2.5, 3.5 HP Carb 4 Stroke models (SN: 1C453840 & up) 4, 5, 6 HP Carb 4 Stroke models (SN: 0R000001-Up) 25HP 2 Stroke International Model  (SN:...

    $37.00
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  • Mercury 8M0168892 Thermostat Replacement Mercury 8M0168892 Thermostat Replacement

    Mercury 8M0168892 Thermostat Replacement

    Mercury 8M0168892 Thermostat Replacement Replaces Mercury part 8M0168892, 8M0117413 Includes thermostat seal 27-887978 Suits Mercury engines: 40, 50, 60 HP EFI 4 Stroke models (SN: 1C453840 & up) This is an aftermarket outboard part.

    $33.66
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  • Aftermarket Mercury 825212A1 Thermostat Kit

    Aftermarket Mercury 825212A1 Thermostat Kit

    Aftermarket Mercury 825212A1 Thermostat Kit Thermostat Kit 825212A1 is a 120 F degree thermostat kit for 30 hp and 40 hp 3 cylinder 4-stroke outboards. Interchange: Mercury Marine 825212001 825212A1 855676A1

    $98.95
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  • Aftermarket Mercury 804540 Thermostat

    Aftermarket Mercury 804540 Thermostat

    Aftermarket Mercury 804540 Thermostat Fits: Mercury 2.5-3.5HP (0R131842 & Up), 4-6HP (0R411838 & Up) Interchange: Mercury Marine - 804540

    $92.09
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  • 18-3672 Thermostat Kit

    Aftermarket Mercury Outboard Thermostat Kit

    Aftermarket Mercury Outboard Thermostat Kit Temperature Rating: 130°F (54.5 degrees celcius) Kit Contains:18-0182 - Thermostat Gasket18-3553 - Thermostat 75692 Interchangeable with the following:GLM13350

    $56.21
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  • Aftermarket Mercury 803061T1 Thermostat Kit

    Aftermarket Mercury 803061T1 Thermostat Kit

    Aftermarket Mercury 803061T1 Thermostat Kit Temperature Rating: 120°FFits: Various Mercury/Mariner 70-125 hp 2 cycle outboards (1987 and newer) Use With:18-0182   - Thermostat Gasket18-0339   - Gasket, Thermostat...

    $58.76
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  • 18-3549-Thermostat

    Aftermarket Mercury 14586 Thermostat

    Aftermarket Mercury 14586 Thermostat Suits Mercury 2-stroke and 4-stroke outboards including 6-30hp 2-stroke outboards, 40-60hp 4-stroke outboards, and 65-90hp 2-stroke outboards. Temperature Rating: 120°FUse with: Thermostat Kit...

    $50.19
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  • 18-3536-Thermostat

    Aftermarket Mercury 833072004 Thermostat

    Aftermarket Mercury 833072004 Thermostat Temperature Rating: 143°F (62°C)Use with Thermostat Kit-  18-3605 Interchangeable with the following:Mercury Marine833072833072002833072003833072004

    $78.65
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