What does the .040 DSL sizing mean for these pistons?

The '.040 DSL' indicates that these pistons are 0.040 inches undersize. This is a common size used when an engine block has been bored out during a rebuild to correct wear or damage, ensuring a proper fit.

Are the piston rings included and pre-installed?

Yes, this set comes with the piston rings already mounted on the pistons. It also includes the necessary piston pins and clips, making them ready for installation right out of the box.

What vehicles are covered by this piston set?

This piston set is designed for the 2001 through 2005 model years of the Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, GMC Sierra 2500 HD, and GMC Sierra 3500, specifically those equipped with the 6.6L Duramax R w/ PCR engine.

2001-2005 Chevy Silverado 2500 HD Piston Set

Name: Mahle OE GM 6.6L Duramax R w/ PCR - .040 DSL Piston With Rings Set (Set of 4)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-gm-6-6l-duramax-r-w-pcr-040-dsl-piston-with-rings-set-set-of-4-t14-53343
Price: 565.08 USD
Availability: BackOrder

Mahle OE GM 6.6L Duramax R w/ PCR - .040 DSL Piston With Rings Set (Set of 4)

$565.08

On Backorder

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

Fits 2001-2005 Chevy Silverado 2500 HD. Mahle OE .040 DSL Piston With Rings Set (Set of 4) for GM 6.6L Duramax R w/ PCR engines.

Key Features

Fits 2001-2005 Chevrolet Silverado 2500 HD, 3500 and GMC Sierra 2500 HD, 3500 with the 6.6L Duramax R w/ PCR engine.
Set includes four pistons, each .040 inch undersize, with mounted piston rings, pins, and clips.
OE quality construction ensures direct fit and performance comparable to original equipment.
Compensated ring grooves help maintain proper ring loading and effective oil control.
Expansion-controlled designs reduce engine noise and wear by maintaining small, precise clearances.
Helps reduce emissions and improve overall oil management within the engine.

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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 the same standards as what originally came in your vehicle. If you're rebuilding the engine in your 2001-2005 Chevrolet Silverado 2500 HD, GMC Sierra 2500 HD, or 3500 with the 6.6L Duramax R w/ PCR engine, this Mahle OE .040 DSL Piston With Rings Set is designed to get you back on the road with confidence.

These pistons are built with compensated ring grooves, which help ensure proper ring loading and effective oil control. They also feature expansion-controlled designs, meaning they're made to fit with small clearances. This attention to detail helps reduce engine noise, minimize wear, lower emissions, and further improve oil management. Mahle makes it convenient for engine builders by offering these pistons ready for installation, complete with mounted piston rings, and including the necessary pin and clips.

This set includes four pistons, each precisely sized at .040 inches undersize, along with their corresponding rings, pins, and clips. This makes it a comprehensive solution for a complete engine rebuild. Please note that these pistons are not CARB approved and cannot be shipped to California.