Michigan Motorsports MLS Head Gasket Pair for 6.0L & 6.2L LS Engines — Rectangle-Port, Multi-Layer Stainless

BTR Brian Tooley Racing MLS head gasket pair provides a high-strength, leak-resistant sealing solution for 6.0L and 6.2L LS rectangle-port engines.

These two-piece MLS head gaskets from BTR (Brian Tooley Racing) are engineered to meet the demands of both stock refreshes and high-output builds on Gen III/IV LS platforms. Sold as a matched pair, they fit a broad range of engines—including L99, L76, L77, LS2, L92, L96, L94, L9H, LQ4, and LQ9—and are designed to maintain combustion integrity under elevated cylinder pressures typical of boosted, nitrous, or high-compression applications.

How do these gaskets hold up under boost or high compression?

BTR MLS head gaskets use multiple stainless-steel layers and precise sealing beads to maintain clamp and combustion sealing when cylinder pressures rise. The layered steel construction resists distortion and preserves sealing surfaces longer than single-layer designs.

• Multi-layer stainless steel for high clamping force and spring-back
• Engineered sealing beads to control blow-by and coolant leakage
• Compatible with boosted, nitrous, or naturally aspirated high-compression builds
• Matched pair to ensure even bore alignment and flatness

Will these gaskets fit my LS-based 6.0L or 6.2L engine?

Yes—this set is made specifically for rectangle-port LS heads on 6.0L and 6.2L platforms. The fit covers a wide list of Gen III/IV variants commonly used in swaps, rebuilds, and performance projects.

• Direct fit for L99, L76, L77, LS2, L92, L96, L94, L9H, LQ4, and LQ9
• Designed for rectangle-port combustion chamber geometry
• Sold as a matched pair to preserve bore spacing and head alignment
• Works for stock replacements and upgraded top-end assemblies

How should I prepare the engine surfaces before installing these head gaskets?

Proper deck and head surface preparation is essential to MLS gasket performance. Clean, flat, and defect-free head and block surfaces deliver the best sealing and longevity.

• Machine or carefully clean surfaces to factory-flat tolerances
• Remove old gasket material and debris; use appropriate cleaners
• Verify head bolt threads and torque-to-yield procedures per engine spec
• Use the matched pair to ensure correct bore and surface alignment

What performance benefits can builders expect from BTR MLS gaskets?

These gaskets provide reliable combustion sealing under higher loads, reducing the risk of head gasket failure in demanding applications. They are chosen by builders who need consistent sealing from daily drivers to track cars and race projects.

• Improved resistance to leakage under elevated cylinder pressure
• Durability suited to high-RPM and repeated heat cycles
• OEM-like fitment with race-oriented sealing characteristics
• Reduced risk of coolant and oil cross-contamination

Who is this for? Engine builders, performance enthusiasts, and professional shops who work on Gen III and IV LS rectangle-port engines will value these BTR MLS head gaskets. Whether you’re restoring a factory top end, assembling a stroked naturally aspirated motor, or building a boosted high-horsepower platform, this matched pair delivers the sealing reliability and mechanical strength needed to protect your investment and maintain performance.