Description
SIERRA 140°F Marine Thermostat Kit for Ford/GM V8 Engines – 18-3646
The SIERRA 140°F Marine Thermostat Kit for Ford/GM V8 Engines – 18-3646 is a marine cooling-system replacement component designed for 1982-and-older Ford and GM V8 marine engines with standard cooling, plus specified older high-performance/closed-cooling applications. Its 140°F (60°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 1982-and-older Ford and GM V8 marine engines with standard cooling, plus specified older high-performance/closed-cooling applications
- Thermostat temperature rating: 140°F (60°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
Specifications
- Manufacturer: Sierra
- Part Number: 18-3646
- Product Type: Thermostat Kit
- Application: 1982-and-older Ford and GM V8 marine engines with standard cooling, plus specified older high-performance/closed-cooling applications
- Temperature Rating: 140°F (60°C)

Reviews
There are no reviews yet.