Description
SIERRA 142°F Marine Thermostat for Chrysler and Ford V8 Engines – 18-3551
The SIERRA 142°F Marine Thermostat for Chrysler and Ford V8 Engines – 18-3551 is a marine cooling-system replacement component designed for select Chrysler V8 and Ford 302/351 marine engines. Its 142°F (61°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 select Chrysler V8 and Ford 302/351 marine engines
- Thermostat temperature rating: 142°F (61°C)
- Helps regulate coolant flow as the engine reaches operating temperature
- Direct-fit replacement for the specified marine engine applications
- Suitable for preventive maintenance or replacement of a sticking/corroded thermostat
Specifications
- Manufacturer: Sierra
- Part Number: 18-3551
- Product Type: Thermostat
- Application: select Chrysler V8 and Ford 302/351 marine engines
- Temperature Rating: 142°F (61°C)

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