Speedmaster LS MLS Head Gasket Bore Thick

The Speedmaster LS MLS head gasket line is made for GM LS-series engine builds. It uses multi-layer steel (MLS) construction to seal the cylinder head to the block. MLS head gaskets are a popular upgrade over composite gaskets for performance engines, and the line is also known as the LS multi-layer steel cylinder head gasket.

Key Features:

• Multi-layer steel construction: A high-pressure steel laminate design holds up to the shearing forces between aluminum heads and iron blocks.
• Strong sealing under load: Internal embossments help seal under high combustion pressures and temperatures, including in nitrous and turbocharged builds.
• Versatile material pairing: Suited to aluminum heads on cast iron blocks or aluminum blocks.
• Better clamping stability: MLS offers better torque retention, less distortion and better sealing than conventional or composite gaskets in high-horsepower, high-cylinder-pressure applications.
• Consistent contact pressure: Designed to maintain contact pressure between the cylinder head and block while the engine runs.
• Choice of bore and compressed thickness: Available in a range of bore and thickness options, so you can match the gasket to your build and your target compression ratio.

Speedmaster head gaskets are built for builders chasing more power. They suit street performance, racing and high-boost engine builds that need a durable head seal.