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 190-degree Cummins 4318948 Thermostat is an OEM replacement Thermostat for Cummins ISM/ISN/ISX/QSX Diesel engines. This thermostat is the stock replacement part needed for a leak-proof change for the correct engine operating temperatures.
This Cummins Replacement Thermostat contains the following required Original Equipment Manufacturer parts:
This Cummins 4318948 Replacement Thermostat applications:
Select ISM Diesel Engines
Select ISN Diesel Engines
Select ISX Diesel Engines
Select QSX Diesel Engines
Note: If your ISM/ISN/ISX/QSX engine is experiencing coolant temperature gauge cycling, replace your existing thermostat with this Cummins 4318948 190-degree thermostat. The new Cummins 4318948 thermostat provides a slower coolant response rate to reduce dramatic engine temperature cycling. This slower engine response rate does not affect engine performance.
The Cummins 4318948 Thermostat on your ISM/ISN/ISX/QSX 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 overheating condition. If you are currently experiencing any of these symptoms, it's time to replace the Cummins thermostat to alleviate this issue.
Using Genuine Cummins parts means you get a precision design, state-of-the-art manufacturing, and diligent testing, ensuring 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.
FAQ: Why should you purchase a Genuine Cummins Thermostat for your diesel engine? Installation of an OEM Cummins 4318948 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: 4318948
Product Note: Cummins Parts Are A Non-Returnable Item. Please ensure you have ordered the correct part for your Cummins diesel engine!