MLS Cylinder Head Gasket - .056 inch Bore 4.100 inch RHS

Features:

• Fits 2001-2016 6.6L Duramax diesel engines
• Designed for right-hand cylinder head position
• 4.100 inch round bore configuration
• .056 inch compressed gasket thickness
• Multi-layer steel (MLS) construction with 5 layers
• Reinforced with armor-clad and graphite materials
• Galvanized steel for added strength and longevity
• Seals uneven or resurfaced head surfaces
• Ideal for performance or heavy-duty use
• Withstands high heat and combustion pressure

Lock In The Power And Let Nothing Slip Past

When you're chasing more power from your Duramax, a strong head gasket isn’t just a recommendation, it’s a requirement. The Cometic C5882-056 MLS Cylinder Head Gasket is built to handle the kind of pressure and heat that comes with tuning, towing, or hauling heavy loads. With a .056 inch compressed thickness and a 4.100 inch round bore, this gasket is perfectly tailored for the right-hand cylinder head of your 2001-2016 Silverado or Sierra 2500HD/3500HD. It’s tough enough to keep your build sealed under boost while offering the precision and durability serious diesel owners count on. Whether you’re refreshing a tired engine or putting together a performance build, this gasket gives you the confidence to run harder without worrying about leaks or failures. The five-layer MLS design holds up in extreme conditions and maintains a factory-quality seal across long-term use. It’s the kind of part you install once and trust to do its job every mile.

Built To Resist Heat Pressure And Imperfect Surfaces

The Cometic C5882-056 MLS Cylinder Head Gasket is designed for the right-hand side of 6.6L Duramax engines used in 2001-2016 Silverado and Sierra 2500HD/3500HD trucks. With a .056 inch compressed thickness and 4.100 inch round bore, this gasket offers excellent sealing for both stock and modified applications. It features a five-layer multi-layer steel construction for enhanced strength and sealing integrity under high combustion pressures. Reinforced with armor-clad, graphite, and galvanized steel materials, the gasket is optimized to conform to irregular or resurfaced surfaces, making it ideal for engines that have seen head work or high mileage. Its MLS design provides superior resistance to both heat and pressure cycles, which is critical for long-term performance in heavy-duty and high-boost environments. Each layer is engineered to expand and contract uniformly with the head and block, reducing the risk of blowouts or warping over time. This gasket is a go-to solution for technicians and performance builders looking to maintain proper cylinder pressure while preventing leaks under extreme operating conditions.

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 Chevrolet Silverado and GMC Sierra 2500HD/3500HD models
• Engineered for right-hand side cylinder head only
• .056 inch compressed thickness for specific engine builds
• 4.100 inch round bore design for proper sealing surface
• Constructed with five-layer multi-layer steel (MLS) material
• Reinforced with armor-clad, graphite, and galvanized steel compounds
• Intended for sealing uneven or resurfaced cylinder head surfaces
• Ideal for high-compression, high-temperature, or performance use
• Always verify bore size, orientation, and thickness before ordering