PLEASE ENTER YOUR ENGINE SERIAL NUMBER - ESN SO WE CAN VERIFY THE CORRECT THERMOSTAT FOR YOUR ENGINE. CUMMINS PARTS ARE NON-REFUNDABLE. You must enter your EIN to purchase this part. If you are using the part number from the actual part in hand, you may enter it in the EIN field to verify this is the part you want.
This xxx Cummins 4080631 Thermostat is an OEM replacement Thermostat for Cummins ISC/QSB Diesel engines. This thermostat is the stock replacement part needed for a leak-proof change for the correct engine operating temperatures. This Cummins Thermostat contains the following required Original Equipment Manufacturer parts:
This Cummins 4080631 Replacement Thermostat applications:
Select ISC Diesel Engines
Select QSB Diesel Engines
Note: If your ISC/QSB engine is experiencing coolant temperature gauge cycling, replace your existing thermostat with this Cummins 4080631 thermostat. The new Cummins 4080631 thermostat provides a slower coolant response rate to reduce dramatic engine temperature cycling. This slower engine response rate does not affect the engine performance.
The Cummins 4080631 Thermostat on your ISC/QSB Cummins engine allows low-temperature coolant from the radiator into the engine to keep the operating temperature within a predetermined range. Operating a Cummins engine 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, it's time to replace the Cummins thermostat to alleviate this issue.
The use of Genuine Cummins parts means you get a precision design, state-of-the-art manufacturing, and diligent testing which ensures optimum engine performance at the Cummins factory-specified level. Only Genuine Cummins parts come with a full factory warranty, giving you peace of mind and financial protection.
Purchasing Genuine Cummins parts means you get a precision-designed product.
Cummins parts are manufactured at state-of-the-art facilities.
Strict quality control measures and diligent testing that ensures the replacement parts perform at Cummins factory-specified levels of efficiency,
Genuine Cummins parts come with a full factory warranty, giving you peace of mind and financial protection.
Only Genuine Cummins parts provide the reliability and durability you need to stay on the road.
Engine: Cummins ISC/QSB
Thermostat Opening Temperature: cc°C - xxx°F
Item Number: Cummins 4080631
Model: ISC | QSB
Manufacturer Part No: Cummins 4080631
Product Application: Cummins ISC/QSB Engines
FAQ: Why should you purchase a Genuine Cummins Thermostat for your diesel engine? Installation of an OEM Cummins 4080631 Thermostat ensures your engine maintains its factory performance, power output levels, function, and straightforward fitment. OEM parts will repair an exact replacement that is trouble-free.
Part Number: 4080631
Product Note: Cummins Parts Are A Non-Returnable Item. Please make sure you have ordered the correct part for your Cummins diesel engine!