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Add to CartSierra replacement thermostat for Mercury Outboards.
Interchangeable with:
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Sierra 18-3638 Mercury Thermostat - Replaces 804540 Sierra replacement thermostat for Mercury Marine Outboards. Fits: Mercury 2.5-3.5HP (0R131842 & Up), 4-6HP (0R411838 &...
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Sierra 18-3640 Mercury Thermostat - Replaces 8M0168892 Sierra replacement thermostat for Mercury Marine Outboards. Fits: Mercury 40-60HP (1C050252 & Up) Interchangeable...
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Sierra 18-3635 Mercury Thermostat - Replaces Mercury 892864T06 Sierra replacement thermostat for Mercury Marine engines. Fits: Mercury 75-115HP (1B366823-2B094995), 150 EFI (1B905505...
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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...
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Sierra 18-3605 Mercury Thermostat Kit This Mercury Thermostat kit is designed for use on 225/250 HP EFI G129222-0T408999 For Use on Mercury/Mariner Outboard Engines Fits: V-135 DFI (2...
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