What is the size of these pistons?

These pistons are standard size with a 0.75MM undersize on the rings. They are designed to be a direct fit for the specified 4.2L GM engines.

Do these pistons come with everything needed for installation?

Yes, this set includes six pistons with the piston rings already mounted, along with the necessary wrist pins and clips for a complete engine rebuild.

Are these pistons suitable for all 4.2L GM engines?

This specific set is designed for 4.2L engines from the 2006 through 2009 model years in select GM vehicles. Always verify fitment for your specific vehicle's year and model.

Mahle OE Piston Set w/ Rings 2243885WR075MM - GM 4.2L

Name: Mahle OE GM 4.2L 06-09 0.75MM w/ Rings Piston With Rings Set (Set of 6)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-gm-4-2l-06-09-0-75mm-w-rings-piston-with-rings-set-set-of-6-t14-53461
Price: 304.20 USD
Availability: BackOrder

Mahle OE GM 4.2L 06-09 0.75MM w/ Rings Piston With Rings Set (Set of 6)

$304.20

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 cast piston set with rings for GM 4.2L engines (2006-2009). Includes 6 pistons and rings for a complete rebuild.

Key Features

Fits 2006-2009 Chevrolet Trailblazer, GMC Envoy, Saab 9-7x, Buick Rainier, and Chevrolet Trailblazer EXT.
Set includes 6 cast pistons with pre-mounted piston rings.
Includes wrist pins and clips for a complete installation.
Features compensated ring grooves for proper ring loading and oil control.
Expansion-controlled design reduces engine noise and wear.
OE quality from Mahle, a leading original equipment piston manufacturer.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

If you're rebuilding the engine in your 2006-2009 GM vehicle with the 4.2L inline-six, this Mahle OE piston set with rings is a solid choice. Mahle is one of the largest original equipment piston manufacturers globally, meaning these pistons are built to the same standards as what came from the factory. They feature compensated ring grooves, which help ensure the rings seat properly for good oil control and consistent compression. The expansion-controlled design also means they're made with tight tolerances to reduce engine noise and wear.

This set comes with six pistons, each already fitted with piston rings, and includes the necessary wrist pins and clips. This means you get a complete, ready-to-install package that simplifies the engine building process. Having the rings pre-mounted saves you a step and ensures they are correctly oriented and seated, which is crucial for proper engine function and longevity. These pistons are designed to fit right into applications like the Chevrolet Trailblazer, GMC Envoy, and Saab 9-7x, among others.