Cometic C15375-062 MLX Cylinder Head Gasket - .062 Bore 4.130 inch RHS | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features:

• Multi-layer steel gasket with 5 layers
• Designed for 6.6L Duramax diesel engines
• Reinforced for sealing irregular surfaces
• Compressed thickness of .062 inches
• 4.130-inch round bore design
• Constructed using high-strength armor-clad material
• Excellent durability under high cylinder pressures
• Ideal for performance or heavy-duty use
• Compatible with 2001–2016 GM 2500HD and 3500HD
• Precision cut for RHS (right side) fitment
• Galvanized steel resists corrosion and wear
• Built for long-term seal reliability

Stop Leaks Before They Start With Proven Duramax Sealing Power

When it comes to engine reliability, there’s no room for shortcuts, especially in a heavy-duty 6.6L Duramax build. The Cometic C15375-062 MLX Cylinder Head Gasket is built for those who want dependable sealing performance with zero guesswork. Whether you’re tackling a head replacement or rebuilding for more boost, this gasket delivers the peace of mind you need to put the torque down and keep it there. Designed to handle extreme conditions, it uses advanced materials like armor-clad, galvanized steel, and graphite compounds to ensure a tight seal even on uneven surfaces. This gasket doesn’t just fit, it locks in compression and keeps combustion where it belongs. With five layers of stainless steel and a right-side orientation, it’s purpose-built for long-term durability and high-load demands. If your Silverado or Sierra 2500HD or 3500HD is in need of a serious sealing solution, this is the component that gets the job done right the first time.

Engineered To Handle The Heat And Pressure Of Hard Work

The Cometic C15375-062 MLX Head Gasket is precision-engineered for 2001-2016 GM 6.6L Duramax engines and built to meet the demands of high-output diesel performance. Featuring a 4.130-inch round bore and a .062-inch compressed thickness, this gasket is ideal for applications requiring accurate fitment and consistent sealing under extreme pressure. The five-layer stainless steel construction provides enhanced structural integrity and maintains its shape even after repeated thermal cycles. Armor-clad and galvanized steel surfaces help resist corrosion while accommodating the slight imperfections of mating surfaces, making this gasket an excellent choice for rebuilt or modified engines. It is specifically designed for the right-hand side cylinder bank and fits models using RHS-specific head gasket placement. Whether you're restoring a workhorse truck or prepping for performance upgrades, this gasket maintains cylinder pressure, prevents coolant leaks, and protects against blow-by. Built with quality and proven in demanding conditions, it’s a smart choice for Duramax owners who expect more from their components.

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 GM 6.6L Duramax engines
• Fits Silverado and Sierra 2500HD/3500HD models
• Right-hand side (RHS) specific head gasket
• Features 4.130-inch round bore size
• Compressed thickness is .062 inches
• Constructed with 5-layer multi-layer steel (MLS)
• Uses armor-clad and galvanized steel surfaces
• Engineered to seal irregular or imperfect surfaces
• Ideal for high-performance and heavy-duty builds
• Ensure correct side orientation during installation