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3946849
Thermostat
Cummins®

IN STOCK

Cummins®

3 are currently available

Ships within 1 business day

$66.99 $87.09
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 crucial component of a truck's cooling system that regulates the engine temperature. The 3946849 thermostat is specifically designed for use in certain types of trucks and works by opening and closing to allow or restrict coolant flow to the radiator. This action helps maintain a constant operating temperature for the engine, which improves fuel efficiency, prevents overheating, and reduces emissions. When the engine is cold, the thermostat remains closed, allowing it to warm up quickly. Once it reaches its optimal operating temperature, the thermostat opens and allows coolant to circulate through the system. If the thermostat fails or becomes stuck in either an open or closed position, it can cause problems such as poor fuel economy, reduced power output, or even engine damage due to overheating.

SPECIFICATIONS

Package Dimensions
2.375 x 2.375 x 2.75 in
Weight
0.25 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* This information is provided as is and may be out of date.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.

Frequently Asked Questions

Have a question? Find common inquiries about parts and procedures with the link below.

FAQ PAGE

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Drop us a line. 1-800-466-1571

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