What is the benefit of the expansion-controlled design?

The expansion-controlled design helps maintain small fitting clearances within the cylinder. This leads to reduced engine noise, less wear on components, lower emissions, and improved oil control.

Do these pistons come with everything needed for installation?

Yes, these Mahle OE pistons are ready for installation. They come with the piston rings already mounted, and the necessary pin and clips are also included for your convenience.

Are these pistons suitable for high-performance builds?

These are Mahle OE quality pistons, meaning they meet the original equipment specifications for your vehicle. They are well-built for reliable operation in standard engine applications.

Mahle OE Piston Set w/ Rings 2243448WR - GM 4.2L

Name: Mahle OE GM 4.2L DOHC 6 CYL STD w/ PCR Piston With Rings Set (Set of 6)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-gm-4-2l-dohc-6-cyl-std-w-pcr-piston-with-rings-set-set-of-6-t14-53457
Price: 480.31 USD
Availability: BackOrder

Mahle OE GM 4.2L DOHC 6 CYL STD w/ PCR Piston With Rings Set (Set of 6)

$480.31

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle OE GM 4.2L DOHC 6 CYL STD w/ PCR Piston With Rings Set (Set of 6). Features expansion-controlled designs for reduced engine noise and wear.

Key Features

Fits 2002-2005 Chevrolet Trailblazer, 2002-2005 GMC Envoy, and 2003-2008 Isuzu Ascender, among other GM vehicles.
Expansion-controlled design helps reduce engine noise, wear, and emissions.
Compensated ring grooves ensure proper ring loading and oil control.
Pistons come with piston rings, pin, and clips already mounted for easier installation.
OE quality pistons from a leading global manufacturer.
Designed for GM 4.2L DOHC 6-cylinder engines.

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Will this fit your vehicle?

Product Details

These Mahle OE pistons feature an expansion-controlled design, which helps maintain small fitting clearances. This is important because it reduces engine noise, wear, and emissions, while also improving oil control. Mahle is a major OE piston manufacturer, so you know you're getting parts that meet the original equipment specifications for your vehicle.

This set includes six pistons, each with compensated ring grooves. These grooves ensure proper ring loading and effective oil control, crucial for the health of your engine. Mahle offers these pistons ready for installation, with the piston rings already mounted, and includes the necessary pin and clips. This convenience saves you time and effort during your engine rebuild.

This set is designed to fit a range of GM inline-6 cylinder engines, commonly found in vehicles like the Chevrolet Trailblazer, GMC Envoy, and Isuzu Ascender from the early to mid-2000s. If you're rebuilding the top end of one of these engines, this well-built piston set is a solid option to get your engine running smoothly again.