What is the purpose of compensated ring grooves?

Compensated ring grooves are designed to ensure proper ring loading and effective oil control. This helps maintain good compression and prevent excessive oil consumption.

Are these pistons a direct replacement for my original equipment?

Yes, Mahle OE pistons are manufactured to the same standards as the original equipment. They are designed for a direct fit and include all necessary components like mounted rings, pins, and clips for installation.

What does '.040 inch undersize' mean for these pistons?

This means the pistons are machined to be 0.040 inches smaller in diameter than the standard factory size. This is common when re-boring engine cylinders to clean up wear or damage, ensuring a proper fit.

Mahle OE GM 6.6L Duramax Piston Set 2243708040

Name: Mahle OE GM 6.6L Duramax 06-09 LMM LBZVin 26D .040 Right Bank Only Piston Set (Set of 4)
Brand: Mahle OE
SKU: mahle-oe-mahle-oe-gm-6-6l-duramax-06-09-lmm-lbzvin-26d-040-right-bank-only-pisto-t14-53089
Price: 548.43 USD
Availability: BackOrder

Mahle OE GM 6.6L Duramax 06-09 LMM LBZVin 26D .040 Right Bank Only Piston Set (Set of 4)

$548.43

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 6.6L Duramax LMM LBZ .040 right bank piston set (4 pistons). Fits 06-10 Chevy/GMC trucks.

Key Features

Fits 2006-2010 Chevrolet and GMC trucks with the 6.6L Duramax LMM/LBZ (VIN 26D) engine.
This is a set of four pistons for the right bank only.
Pistons are machined to a .040 inch undersize.
Features compensated ring grooves for proper ring loading and oil control.
Expansion-controlled design reduces engine noise, wear, and emissions.
Includes mounted piston rings, piston pins, and clips for easier installation.

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Will this fit your vehicle?

Product Details

Mahle is one of the largest original equipment piston manufacturers in the world, and they bring that OE expertise to their replacement parts. If you're rebuilding the top end of your 2006-2010 GM truck with a 6.6L Duramax LMM or LBZ engine, this Mahle OE piston set is built to the same standards as the original equipment.

This set includes four pistons specifically for the right bank of your engine, and they are machined to a .040 inch undersize. Mahle pistons feature compensated ring grooves, which help ensure proper ring loading and effective oil control. They also use an expansion-controlled design, meaning they're made with small fitting clearances. This helps reduce engine noise, wear, and emissions, while also improving oil control for a cleaner-running engine.

For your convenience, these pistons come ready for installation with the piston rings already mounted. The piston pins and clips are also included, so you have everything you need to get these pistons into your engine block. This set is designed for a direct fit on a wide range of GM trucks, including models like the Chevrolet Silverado 2500 HD and GMC Savana 3500.