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Add to CartSierra replacement fresh water cooled thermostat kit. This kit has a temperature rating of 150°F (66°C) and includes a thermostat housing gasket.
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
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Sierra 18-3618 Thermostat Kit - Raw Water Cooled Sierra replacement Thermostat Kit for Volvo Penta engines. Sierra marine parts are manufactured to meet or exceed OEM requirements. Temperature...
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Sierra 18-3621 Thermostat Kit Temperature Rating: 160°F Contains: (1) 18-3558 Thermostat (1) 18-0164 Thermostat Housing Gasket
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Sierra 18-3674 Thermostat Kit for Johnson & Evinrude Engines For Johnson and Evinrude V-6 Crossflow engines. Use With: Thermostat 18-3543 Includes: (1) 18-1219 Grommet Gasket (V6...
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Sierra 18-3651 Mercruiser 142 Degree Thermostat Kit Sierra high-quality engine parts are designed to meet OEM specifications. Temperature Rating: 142 degrees Kit Includes: (1) 18-2553...
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Sierra 18-3644 Mercruiser 160 Degree Thermostat Kit Sierra high-quality engine parts are designed to meet OEM specifications. Temperature rating: 160° Kit Includes: (1) 18-2553 Thermostat...
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Sierra 18-3615 Thermostat - Raw Water Sierra replacement thermostat for Volvo Penta engines. Temperature Rating: 150°F Interchangeable with: Volvo Penta 3587597
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Sierra 18-3670 160 Degree Thermostat Kit for OMC & Volvo Fits: 2.5L & 3.0L OMC and Volvo Penta Marine engines (1982-88) Kit Includes: (1) 18-3558 Thermostat (1) 18-2858 Thermostat...
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Sierra 18-3608 Yamaha Thermostat Kit Sierra high-quality engine parts are designed to meet OEM specifications. Sierra 18-3608 Thermostat Kit has a 122°F Temperature Rating. Kit Contains: (1)...
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