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5478594
Thermostat
Cummins®

DISCONTINUED

Cummins®
Superseded by 6305290
Genuine OEM Part

This truck part is made by Cummins®. We guarantee that all of our parts are from the OEM (original equipment manufacturer), ensuring a proper fit and quality manufacturing. We make it easy to buy truck parts online.

Manufacturer Warranty*
DESCRIPTION
A thermostat is a component of a truck's cooling system that regulates the engine's temperature by controlling the flow of coolant. The part number 5478594 refers to a specific model of thermostat that is designed to fit certain makes and models of trucks. When the engine is cold, the thermostat remains closed, preventing coolant from circulating and allowing the engine to warm up quickly. As the engine reaches its operating temperature, the thermostat opens and allows coolant to flow through the radiator, cooling it down before returning it back to the engine. This helps maintain a consistent temperature range for optimal performance and fuel efficiency while also preventing damage from overheating or freezing. If a truck's temperature gauge fluctuates frequently or shows signs of overheating, it may be time to replace the thermostat with an appropriate replacement such as this part number 5478594.
RELATED PARTS
Supersedes
5274349

SPECIFICATIONS

Package Dimensions
4.87 x 4.5 x 4.5 in
Weight
0.964 lbs
* This information is provided as is and may be out of date. Please contact us or the manufacturer to verify warranty coverage.
* Variable geometry turbocharger and electronic actuator repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after October 1, 2018.
* Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), Selective Catalyst Reduction (SCR) catalyst, and Electronic Control Module (ECM) repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after January 1, 2020.
* These restrictions are only applicable to New parts and ReCon parts coverages for the components listed above sold to a customer in the US or Canada. All other coverages are excluded. All other regions are excluded.

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