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3945094
Expansion Plug
Cummins®

IN STOCK

Cummins®

3 are currently available

Ships within 1 business day

$6.49 $8.44
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
An expansion plug, also known as a freeze plug or Welch plug, is a small metal disc that is inserted into a hole in the engine block or cylinder head of a truck engine. The part number for this specific expansion plug is 3945094. Its purpose is to seal off the hole and prevent coolant from leaking out of the engine. Expansion plugs are designed to pop out if the coolant freezes, which can prevent damage to the engine block. They are typically made of steel or brass and come in various sizes depending on the application. If an expansion plug fails or becomes damaged, it should be replaced promptly to prevent coolant leaks and potential engine damage.

SPECIFICATIONS

Comments
Item Not Shown In Art.
Package Dimensions
1.5 x 1.5 x 0.25 in
Weight
0.046 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* This information is provided as is and may be out of date.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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