4089621 Image1

4089621
Engine Piston Kit
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$329.95 $392.64
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
The Engine Piston Kit (Part Number: 4089621) is a set of components that work together to convert the fuel energy into mechanical power in an internal combustion engine. It consists of a piston, piston rings, wrist pin and circlips. The piston is a cylindrical component that moves up and down inside the cylinder bore, compressing the fuel-air mixture during the intake stroke and transferring the energy to the crankshaft during the power stroke. The piston rings provide a seal between the piston and cylinder wall, preventing blow-by of combustion gases and oil consumption. The wrist pin connects the piston to the connecting rod and allows it to pivot as it moves up and down. Finally, circlips secure everything in place. A quality engine piston kit ensures optimal engine performance by maintaining compression pressure, reducing noise levels and increasing fuel efficiency.

SPECIFICATIONS

Comments
1.00 mm Oversize.
Package Dimensions
4.8 x 4.4 x 4.4 in
Weight
2.71 lbs

BILL OF MATERIALS

Name Quantity Part Number
Retaining Ring 2 3939375
Piston Ring Set 1 4089615
* This information is provided as is and may be out of date.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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FAQ PAGE

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