4089778 Image1

4089778
Engine Piston Kit
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$319.95 $380.74
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.

Manufacturer Warranty*
DESCRIPTION
An engine piston kit, also known as a piston assembly, is a set of pistons that are specifically designed to fit into an engine's cylinders. The kit typically includes the piston itself, along with any necessary rings, pins, and other components needed to properly install the piston. The part number 4089778 refers to a specific type of engine piston kit that may be used in various makes and models of trucks. Pistons are essential components in an internal combustion engine as they transfer energy from the expanding gases to the crankshaft which converts it into motion. A damaged or worn out piston can result in poor performance and decreased fuel efficiency. Therefore, timely replacement of faulty pistons with high-quality kits is crucial for maintaining the optimal functioning of a truck's engine.
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Supersedes
3957790

SPECIFICATIONS

Package Dimensions
5.3 x 5.3 x 4.88 in
Weight
3.25 lbs

BILL OF MATERIALS

Name Quantity Part Number
Retaining Ring 2 3920691
Piston Ring Set 1 3938177
* This information is provided as is and may be out of date.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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