Cometic Gasket · New
Cometic GM LSX LHS 4.15in Bore .040 inch MLX 4 Layer Head Gasket
MPN C5703-040 · Store SKU cgsC5703-040
Supplier stock checked 11/8/2026, 4:51:40 AM UTC. Adding a part does not reserve it.
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Product details
Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.040". 18 Bolt Heads. Left Side. Cometic MLX (Multi-Layer Stopper) gaskets utilize an integrated stopper layer for combustion chamber sealing and improved clamp load around the cylinder without increasing bore distortion. MLX technology can be found in some head gaskets and are made from the same materials as our MLS Head Gaskets. No sealants or re-torque required. GM LSX Gen-4 Small Block V8 .040in. MLX Cylinder Head Gasket; 4.165in. Bore; LHS MLX Gaskets utilize an integrated "stopper" layer for combustion chamber sealing GM LSX Gen-4 Small Block V8 .040" MLX Cylinder Head Gasket, 4.165" Bore, LHS GM LSX Gen-4 Small Block V8 Cylinder Head Gasket
Manufacturer fitment & guides
Check C5703-040 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
