Description
SIERRA 160°F Thermostat Kit for MerCruiser GM Engines – 18-3647
The SIERRA 160°F Thermostat Kit for MerCruiser GM Engines – 18-3647 is a marine cooling-system replacement component designed for MerCruiser 1987-and-newer GM engines with standard cooling. Its 160°F (71°C) operating rating helps the engine reach and maintain the intended cooling-system temperature. It is a fit-specific service part; confirm the engine model, serial range, cooling configuration, and OEM interchange before installation.
- Designed for MerCruiser 1987-and-newer GM engines with standard cooling
- Thermostat temperature rating: 160°F (71°C)
- Service kit groups the thermostat and/or required sealing components for cooling-system maintenance
- Helps restore correct engine warm-up and operating-temperature control
- Fit-specific design reduces guesswork during scheduled cooling-system service
What’s in the Box
- Thermostat (18-3649)
- Thermostat cover gasket (18-2844)
- Thermostat cover gasket (18-2552)
- Thermostat cover gasket (18-2553)
- O-ring (18-7173)
- Thermostat housing gasket (18-2917)
Specifications
- Manufacturer: Sierra
- Part Number: 18-3647
- Product Type: Thermostat Kit
- Application: MerCruiser 1987-and-newer GM engines with standard cooling
- Temperature Rating: 160°F (71°C)
- OEM / Aftermarket Interchange: Mercury Marine 807252Q5, 807252T8
- UPC: 808282101213
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