This 180 Degree Cummins Thermostat Kit is an OEM replacement 180 Degree Thermostat, Thermostat Seal Ring and Thermostat Housing Seal for the Cummins 5.9L Diesel engine. These Mopar parts are the stock replacement parts needed for a leak-proof 180 thermostat change for the right engine operating temperatures.This Dodge Ram 5.9L Cummins 12 Valve Thermostat Kit contains the three required Original Equipment Manufacturer parts which installed at the factory.
NOTE: If your 1994 to 1998 Dodge pickup truck with a 5.9L Cummins 6BT engine is experiencing coolant temperature gauge cycling, replace your existing thermostat with the Cummins 3934733 180 thermostat kit. The new 3934373 thermostat provides a slower response rate to reduce dramatic engine temperature cycling. This slower engine response rate does not affect engine performance.
The Cummins Thermostat on your Dodge Ram allows low-temperature coolant from the radiator into the engine to keep the operating temperature within a predetermined range. Operating a Cummins 5.9L with a bad thermostat will cause the thermostat to get stuck in the open or closed position. A defective thermostat will cause the engine to operate either below the correct operating temperature or above it leading to an overheat condition. If you are currently experiencing any of these symptoms its time to replace the Dodge 5.9L Cummins 180 Degree Thermostat Kit yourself to alleviate this issue.