Mr. Gasket MLS Multi-Layer Steel Head Gaskets

Mr. Gasket MLS (Multi-Layer Steel) Head Gaskets are the professional engine builder's choice for a leak-proof, lifetime-guaranteed combustion seal. Backed by more than half a century of racing heritage, Mr. Gasket engineers these head gaskets using premium-grade stainless steel and state-of-the-art manufacturing technology to meet the tight tolerances that serious engine builders demand.

At the heart of every Mr. Gasket MLS head gasket is a unique soft-radius embossment formation process that optimizes the embossment radius, reduces stress points, enhances gasket conformability, and provides uniform clamp load distribution — delivering superior surface contact between block and cylinder head. All gasket layers and spacers then undergo an additional stress-relief tempering process that reduces brittleness, increases material flexibility, and improves deformation retention for long-term torque retention and stability.

A proprietary polymer coating is applied to the outer layers to ensure uniform, uninterrupted coverage that micro-seals engine coolant and oil passages. Unlike standard MLS gaskets that require a 30 Ra surface finish, Mr. Gasket's coating is engineered to seal surface finishes up to 60 Ra — twice as rough — giving builders more flexibility when working with real-world machined surfaces. This same coating also prevents the gasket from bonding to the head or block, making disassembly clean and easy without risking deck damage.

Key Features:

• Manufactured from 3-layer premium-grade stainless steel with precision laser cutting
• Unique soft-radius embossment formation process for optimized conformability and uniform clamp load distribution
• Stress-relief tempering reduces brittleness and improves flexibility and deformation retention
• Proprietary polymer coating seals surface finishes up to 60 Ra — twice the tolerance of standard MLS gaskets
• Micro-seals engine coolant and oil passages for a complete, leak-free seal
• Reduces cylinder bore distortion and maintains combustion seal integrity under extreme pressure
• Gaskets release cleanly during disassembly, protecting deck and head surfaces
• Ideal for high-compression, supercharged, turbocharged, and nitrous oxide applications
• Suited for high-performance street, drag racing, and oval track use
• Backed by a Mr. Gasket Limited Lifetime Warranty

Whether you're building an all-out race engine or a serious high-performance street application, Mr. Gasket MLS Head Gaskets deliver the sealing reliability and durability that professional engine builders trust. Select the correct part number for your specific application from the available variants below.