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The Cometic MLX head gasket for GM LT1/L86/L87 engines with a 4.125‑inch bore and .058‑inch thickness uses Multi‑Layer Stopper (MLX) technology to improve combustion chamber sealing and clamp load without increasing bore distortion. MLX gaskets use the same core materials as MLS designs and include an integrated stopper layer. Coated on both sides with Viton, the gasket requires no sealants or re‑torque and is engineered to provide improved clamp distribution and reliable sealing for the specified GM LT1 family.
Cometic GM LT1/L86/L87 4.125in Round Bore .58in MLX Head Gasket
