What is the advantage of Mahle OE pistons?

Mahle is a major original equipment manufacturer, so these pistons are built to the same standards and feature the same designs as the factory parts. They offer compensated ring grooves for better oil control and expansion-controlled designs to reduce engine noise and wear.

Does this piston set come with everything needed for installation?

Yes, this set includes the pistons with the piston rings already mounted, as well as the necessary piston pins and clips, for a more convenient engine rebuild.

What does '0.25MM undersize' mean for these pistons?

This means the pistons are 0.25 millimeters smaller in diameter than the standard factory size. This is often used when cylinders have been honed to a matching oversize to ensure proper piston-to-wall clearance.

Mahle OE GM 4.2L Piston Set 2243885025MM

Name: Mahle OE GM 4.2L 06-09 0.25MM Piston Set (Set of 6)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-gm-4-2l-06-09-0-25mm-piston-set-set-of-6-t14-53702
Price: 226.16 USD
Availability: BackOrder

Mahle OE GM 4.2L 06-09 0.25MM Piston Set (Set of 6)

$226.16

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 06-09 0.25MM Piston Set (Set of 6). These pistons are built to OE specs for reliable engine performance.

Key Features

Fits 2006-2009 Buick Rainier, Chevrolet Trailblazer, GMC Envoy, and Saab 9-7x with the 4.2L engine.
Mahle OE quality pistons are built to original equipment specifications.
Compensated ring grooves ensure proper ring loading and oil control.
Expansion controlled designs reduce engine noise and wear.
Pistons come with mounted piston rings for easier installation.
Includes piston pins and clips.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

If you're rebuilding the engine in your 2006-2009 Chevrolet Trailblazer, GMC Envoy, or similar 4.2L inline-6 GM vehicle, this Mahle OE 0.25MM undersize piston set is a solid choice. Mahle is a major OE supplier, meaning these pistons are made to the same standards and feature the same designs as the original equipment your vehicle came with from the factory.

These pistons are designed with compensated ring grooves to ensure the piston rings load correctly and maintain good oil control. They also feature expansion-controlled designs, which help reduce engine noise and wear by allowing for small fitting clearances. This set comes ready for installation, with the piston rings already mounted, and includes the piston pins and clips, making the rebuild process more convenient for you.

This set is specifically sized at 0.25MM undersize, which is important if you're honing your cylinders to match. Mahle's OE quality construction means you can expect them to help reduce emissions and improve oil control in your engine.