Cummins 4336659 Replacement 180 Degree Thermostat


SKU: Cummins 4336659

Cummins Thermostat

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Sale price$87.20

ISX/QSX Cummins 4336659 Replacement 180 Degree Thermostat

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 180 degree Cummins 4336659 Thermostat is an OEM replacement Thermostat for Cummins 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 Thermostat contains the following required Original Equipment Manufacturer parts:

  • Thermostat

This Cummins 4336659 Replacement Thermostat applications:

  • Select Cummins ISX Diesel Engines
  • Select Cummins N14 Diesel Engines
  • Select Cummins M11 Diesel Engines
  • Select Cummins L10 Diesel Engines
  • Select Cummins ISM Diesel Engines
  • Select Cummins QSB Diesel Engines

OEM Cummins 4336659 Thermostat Succeeds these part numbers:

  • 2882757
  • 3335550
  • 4318197
  • 4336659
  • 4952204
  • 4973373

Note: If your Cummins engine is experiencing coolant temperature gauge cycling, replace your existing thermostat with this Cummins 4336659 180 degree thermostat. The new Cummins 4336659 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 4336659 Thermostat on your 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.

NOTE: We ask for your ESN to ensure the proper Cummins replacement Thermostat is purchased for your Cummins Engine. Without the ESN there is no way for us to provide the correct Non Returnable Cummins parts for your engine.

This 4336659 Replacement Cummins OEM  Thermostat is for the ISX/QSX Cummins engines that are MADE IN THE USA! 

This OEM Cummins Thermostat Benefits:

  • 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.
  • by KLM Performance
  • Engine : Cummins ISX  | Cummins N14 | Cummins M11 | Cummins L10 | Cummins ISM | Cummins QSB Diesel Engines
  • Thermostat Opening Temperature: 82.2°C - 180°F
  • Item Number: Cummins 4336659
  • Make: Cummins 
  • Model: ISX | QSX
  • Year: 
  • Manufacturer Part No: Cummins 4336659
  • Product Application: Cummins ISX/QSX Engines
  • Height: 3
  • Width :3
  • Brand: Cummins
  • FAQ: Why should you purchase a Genuine Cummins Thermostat for your diesel engine?  Installation of an OEM Cummins 4336659 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: 4336659
  • Manufacturer: Cummins
  • Product Note: Cummins Parts Are A Non-Returnable Item. Please make sure you have ordered the correct part for your Cummins diesel engine!

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