MAHLE 41909.04 PISTON RING SET (.040) FOR 2001-2010 GM 6.6L DURAMAX ENGINE

The MAHLE 41909.04 is a high-performance piston ring set designed for the 6.6L Duramax diesel engines in 2001–2010 GM trucks. This set is specifically intended for overbore applications, providing a .040-inch oversize to accommodate engine reconditioning.

? Product Overview

• Part Number: 41909.04

• Application: .040" oversize piston ring set

• Material Composition:

  • Top Ring: Ductile Iron

  • Second Ring: Cast Iron

  • Oil Ring Assembly: Gas Nitride Steel (GNS)

• Coating: Plasma-Moly face coating for enhanced durability

• Pre-Lapped: Yes, for immediate seating without break-in period

• Warranty: 1-year limited warranty
  

? 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)

? Package Contents

• Quantity: Set includes rings for all cylinders

• Configuration: Standard 4-ring design (top, second, and oil rings)

• Oversize: .040" overbore for engine reconditioning