What does 0.50mm undersize mean for these pistons?

This means the pistons are 0.50mm smaller in diameter than the standard factory size. They are intended for use in an engine block that has been machined (bored) to this specific undersize to restore proper piston-to-wall clearance during an engine rebuild.

What is included in this set?

This set includes eight Mahle OE pistons, each with their piston rings pre-mounted. It also comes with the necessary wrist pins and clips required for installation.

Are these pistons suitable for all 6.6L Duramax engines?

This specific set is designed for the 2010-2016 model years of Chevrolet and GMC trucks with the 6.6L Duramax engine. It is important to verify fitment for your exact vehicle application, as engine variations can occur across different model years.

Mahle OE Piston Rings 2243935WR050MM - 2010-2016 GMC 6.6L Du

Name: Mahle OE 10-16 GMC 6.6L Duramax 0.50mm w/ Rings (Set of 8)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-10-16-gmc-6-6l-duramax-0-50mm-w-rings-set-of-8-t14-195879
Price: 1040.23 USD
Availability: BackOrder

Mahle OE 10-16 GMC 6.6L Duramax 0.50mm w/ Rings (Set of 8)

$1040.23

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 10-16 GMC 6.6L Duramax 0.50mm w/ Rings (Set of 8). These OE-quality pistons come with rings pre-installed for easier engine building.

Key Features

Fits 2010-2016 Chevrolet and GMC 6.6L Duramax diesel trucks.
Pistons are 0.50mm undersize, suitable for bored engine blocks.
OE quality construction ensures performance matching factory specifications.
Compensated ring grooves provide proper ring loading and oil control.
Expansion-controlled design reduces engine noise and wear.
Includes pre-mounted piston rings, wrist pins, and clips for easier installation.

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Will it fit your car?

Product Details

These Mahle OE pistons are built to the original equipment specifications for 2010-2016 GMC and Chevrolet 6.6L Duramax diesel engines. They are supplied 0.50mm undersize, meaning they are intended for engine blocks that have been bored out to match this size during a rebuild. Mahle is a leading original equipment piston manufacturer, so you're getting parts that meet the same standards as what came from the factory.

What sets these pistons apart is their attention to detail for optimal engine performance and longevity. They feature compensated ring grooves, which help ensure the piston rings are loaded correctly for better oil control and reduced blow-by. The expansion-controlled design allows for tighter clearances within the cylinder bore, which helps to quiet engine noise, lower emissions, and further improve oil management. This set comes with the piston rings already mounted, along with the necessary wrist pins and clips, making the installation process more convenient for the engine builder.

When rebuilding your Duramax engine, using pistons that match the original design and quality is crucial for reliable performance. This set is ready for installation, saving you time and ensuring you have the correct components for a successful engine overhaul. Please note that these are not CARB approved and cannot be shipped to California.