Cometic C5882-040 MLS Cylinder Head Gasket - .040 inch Bore 4.100 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features:

• Fits 2001-2016 6.6L Duramax diesel engines
• Designed for right side cylinder head
• Compatible with Silverado and Sierra HD models
• 4.100 inch round bore design
• .040 inch compressed gasket thickness
• Multi-layered steel (MLS) gasket construction
• Made with reinforced sealing materials
• Engineered to seal irregular surfaces
• Ideal for performance and heavy-duty use
• Withstands high combustion and thermal stress

Seal It Right The First Time With A Gasket That Lasts

If you're rebuilding your 6.6L Duramax and want to make sure it holds up to the power you're putting down, the Cometic C5882-040 MLS Cylinder Head Gasket is a smart move. Designed specifically for the right side of 2001-2016 Silverado and Sierra 2500HD/3500HD trucks, this gasket gives you the peace of mind that comes with precision fit and serious durability. Whether you're towing, hauling, or running tuned power levels, you need a gasket that can seal up tight and stay that way. Cometic’s multi-layer steel design uses reinforced materials that are built to survive extreme conditions without giving in to pressure or heat. The .040 inch compressed thickness makes it perfect for stock or mildly built engines, keeping everything sealed without compromising performance. Plus, with a 4.100 inch bore and round shape, you get consistent sealing across the entire surface. It's a gasket you can trust when failure is not an option.

Precision Built To Handle Heat Pressure And Irregular Surfaces

The Cometic C5882-040 MLS Cylinder Head Gasket is engineered for strength, consistency, and performance across a wide range of Duramax applications. Built with three layers of durable multi-layer steel, this gasket is designed to handle the heat and combustion pressure that comes with high-output diesel performance. Its .040 inch compressed thickness allows for tight tolerances and reliable clamping force, which is critical for long-term durability under load. The 4.100 inch bore and round shape promote even distribution of pressure and ensure compatibility with factory and aftermarket cylinder head and piston setups. Reinforced with armor-clad, graphite, and galvanized steel materials, this gasket is built to seal even irregular surfaces—common in aged or resurfaced engines. It is designed specifically for the right-hand side of 2001-2016 GM Silverado and Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax engine. Whether you're replacing a failed gasket or finishing a full engine build, this component is made to meet the demands of high-performance diesel applications.

Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• Designed for 2001-2016 6.6L Duramax diesel engines
• Fits GM Silverado and Sierra 2500HD/3500HD models
• This gasket is for the right-hand side only
• Compressed thickness measures .040 inch
• Features a 4.100 inch round bore design
• Constructed using three layers of multi-layer steel (MLS)
• Reinforced with armor-clad, graphite, and galvanized steel
• Intended for high-performance or heavy-duty applications
• Effective at sealing irregular or resurfaced surfaces
• Verify correct side and dimensions before ordering