Right Hand Side Head Gasket Grade A

Features:

• Right-hand side (passenger side) head gasket

• Grade A thickness (0.95mm compressed)

• Multi-layer steel (MLS) construction for superior sealing

• Engineered to meet or exceed OEM specifications

• Ideal for stock or mildly modified Duramax engines

• Sold individually; left-hand side gasket sold separately

OEM-Quality Sealing for Duramax Engines

The Mahle 54580 Grade A Right-Hand Side Head Gasket is designed to restore factory sealing performance for 2001–2016 GM 6.6L Duramax engines. Built using multi-layer steel (MLS) construction, this gasket delivers exceptional durability and sealing under high combustion pressures. It prevents coolant and oil leaks while maintaining optimal cylinder compression, making it an excellent choice for engine repairs or rebuilds.

Precision Fit for Long-Term Reliability

Designed to match factory specs, this Grade A gasket offers a 0.95mm compressed thickness, ideal for engines that have not been decked or resurfaced beyond OEM tolerances. It’s perfect for stock or lightly upgraded trucks and ensures the right seal for long-lasting performance. Choose the correct grade based on your head and block measurements to preserve proper compression.

Fitment:

2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Chevrolet Silverado/GMC Sierra 2500HD/3500HD 6.6L Duramax (LB7, LLY, LBZ, LMM, LML)

Fitment Notes:

• Passenger (right-hand) side head gasket

• Grade A = 0.95mm compressed thickness

• Not legal for sale or use in California due to emissions regulations