Description

Sierra’s 18-3647 Thermostat Kit fits GM engines with standard cooling requiring a 160° thermostat (1987 and newer). The kit contains (1) 18-2552 Thermostat Cover Gasket, (1) 18-2553 Thermostat Gasket, (1) 18-2844 Thermostat Cover Gasket, (1) 18-2917 Thermostat Housing Gasket, (1) 18-3649 Thermostat, (1) 18-7173 O-Ring, and (1) 18-0398 Thermostat Gasket. Each Sierra product meets or exceeds the original equipment part it replaces.
Fits GM engines with standard cooling requiring a 160° thermostat (1987 and newer)
Contains (1) 18-2552 Thermostat Cover Gasket, (1) 18-2553 Thermostat Gasket, (1) 18-2844 Thermostat Cover Gasket, (1) 18-2917 Thermostat Housing Gasket, (1) 18-3649 Thermostat, (1) 18-7173 O-Ring, and (1) 18-0398 Thermostat Gasket
Temperature rating: 160°F
Each Sierra product meets or exceeds the original equipment part it replaces