What does the '.010' designation mean for these pistons?

The '.010' indicates that these pistons are 0.010 inches undersize compared to the standard bore size. This is common when rebuilding an engine, allowing for a slight overbore of the cylinders to ensure a proper fit and seal.

Are the piston rings included and pre-installed?

Yes, these Mahle piston sets come with the piston rings already mounted on the pistons. The set also includes the necessary wrist pins and clips, making them ready for installation right out of the box.

What is the benefit of expansion-controlled designs in pistons?

Expansion-controlled designs help the piston maintain precise clearances within the cylinder bore as the engine temperature changes. This reduces noise, minimizes wear on the piston and cylinder walls, and contributes to better oil control and emissions.

Mahle OE GM 4.2L DOHC 6 CYL .010 Piston Set w/ Rings 2243448

Name: Mahle OE GM 4.2L DOHC 6 CYL .010 w/ PCR Piston With Rings Set (Set of 6)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-gm-4-2l-dohc-6-cyl-010-w-pcr-piston-with-rings-set-set-of-6-t14-53428
Price: 472.99 USD
Availability: BackOrder

Mahle OE GM 4.2L DOHC 6 CYL .010 w/ PCR Piston With Rings Set (Set of 6)

$472.99

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 .010 w/ PCR Piston With Rings Set (Set of 6). Features compensated ring grooves for proper ring loading and oil control.

Key Features

Fits 2004-2005 Buick Rainier, 2002-2005 Chevrolet Trailblazer/EXT, 2002-2005 GMC Envoy/XL/XUV, 2003-2008 Isuzu Ascender, 2002-2004 Oldsmobile Bravada, and 2005 Saab 9-7x.
This is a set of 6 pistons, each measuring 0.010 inches undersize.
Features compensated ring grooves for proper ring loading and improved oil control.
Expansion controlled designs help reduce engine noise and wear by maintaining small clearances.
Pistons come with mounted piston rings, pin, and clips for easier installation.
Built to OE quality standards by Mahle, a leading OE piston manufacturer.

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Will this fit your vehicle?

Product Details

Mahle is one of the largest OE piston manufacturers globally, known for producing parts that meet original equipment specifications. This piston and ring set is built to those same standards for GM 4.2L DOHC 6-cylinder engines. It's a set of six pistons, each measuring 0.010 inches undersize, designed to restore your engine's performance and efficiency after a rebuild.

These pistons feature compensated ring grooves, which help ensure the piston rings are loaded correctly for better oil control and reduced blow-by. They also incorporate expansion-controlled designs. This means the pistons are made to maintain small, precise clearances within the cylinder bore even as the engine heats up. This advanced design helps reduce engine noise, minimize wear on critical components, and keep emissions in check, all while improving how well the engine manages oil.

Mahle makes it convenient for engine builders by offering these pistons ready for installation with the piston rings already mounted. The necessary pins and clips are also included, so you have everything you need to get started on your engine build. This set is designed to fit a range of vehicles, including models like the Chevrolet Trailblazer, GMC Envoy, and Saab 9-7x from the early to mid-2000s.