MAHLE 41909 PISTON RING SET (STD) FOR 2001-2010 GM 6.6L DURAMAX ENGINE

The MAHLE 41909 is a premium piston ring set designed for the 2001–2010 GM 6.6L Duramax diesel engines, including LB7, LLY, LBZ, and LMM variants. This set is engineered to meet or exceed OEM specifications, ensuring reliable performance and durability for your engine rebuild or maintenance needs.

? Product Overview

• Part Number: MAHLE 41909

• Engine Compatibility: 2001–2010 GM 6.6L Duramax (LB7, LLY, LBZ, LMM)

• Bore Diameter: 4.0551 inches

• Ring Materials:

  • Top Ring: Ductile Iron

  • Second Ring: Cast Iron

  • Oil Ring Assembly: Gas Nitride Steel (GNS)

• Ring Thickness:

  • Top Ring: 0.1181 inches

  • Second Ring: 0.0783 inches

  • Oil Ring Assembly: 0.1177 inches

• Coatings:

  • Top Ring: Plasma-Moly

  • Oil Ring Assembly: Gas Nitride

• Quantity: Set includes 32 rings (8 sets of 4 rings)

• Pre-Lapped: Yes, for immediate seating
  

? Vehicle Fitment

This piston ring set is compatible with the following GM models equipped with the 6.6L Duramax diesel engine:

• Chevrolet Silverado 2500HD/3500HD (2001–2010)

• GMC Sierra 2500HD/3500HD (2001–2010)

• Chevrolet Express 2500/3500 (2001–2010)

• GMC Savana 2500/3500 (2001–2010)

• Hummer H1 (2006)

The MAHLE 41909 Piston Ring Set is meticulously crafted to deliver exceptional performance for the 2001–2010 GM 6.6L Duramax diesel engines, including the LB7, LLY, LBZ, and LMM variants. Designed to meet or exceed OEM specifications, this premium piston ring set ensures reliability and longevity, making it an ideal choice for engine rebuilds or routine maintenance.

With a bore diameter of 4.0551 inches, the set includes 32 precision-engineered rings, providing comprehensive coverage for eight sets of four rings. Each component is constructed from high-quality materials to enhance durability and performance. The top ring features ductile iron construction, while the second ring employs robust cast iron. The oil ring assembly is crafted from gas nitride steel (GNS), ensuring excellent wear resistance.

The meticulous design includes various thicknesses: the top ring measures 0.1181 inches, the second ring is 0.0783 inches, and the oil ring assembly stands at 0.1177 inches. To improve efficiency and performance, the top ring is coated with Plasma-Moly, ensuring optimal function and minimal friction, while the oil ring assembly is treated with a gas nitride finish for enhanced longevity.

Pre-lapped for immediate seating, the MAHLE 41909 Piston Ring Set is ready for quick installation, minimizing downtime during engine work. This piston ring set is compatible with various GM models, including the Chevrolet Silverado 2500HD/3500HD, GMC Sierra 2500HD/3500HD, Chevrolet Express, GMC Savana, and even the Hummer H1, ensuring broad applicability for diesel engine enthusiasts.

Elevate your engine’s performance with this essential component, backed by MAHLE's trusted quality and engineering excellence.