Cylinder Head Gasket

The HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block.

Additional Information

Chevrolet Mark-IV Big Block V8 .040in. MLX Cylinder Head Gasket; 4.560in. Bore

Part Type

Engine Cylinder Head Gasket

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

• Embossed Outer Layers Coated w/Viton
• Improved clamp load around the cylinder without increasing bore distortion

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Product Details

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Head Gasket, MLX, Multi-Layer Stainless Steel, 4.560 in. Bore, 0.040 in. Compressed Thickness, Chevrolet, GMC, Chevy Big Block, Each

The leak stops here! Cometic MLX head gaskets feature a unique integrated "stopper" layer for optimum combustion chamber sealing and improved clamp load around the cylinder without increasing bore distortion. The MLX head gaskets, like their MLS counterparts, are multi-layer stainless steel for increased strength—and require no sealants or re-torquing. Dozens of models are available; order the MLX head gaskets designed to maximize your engine's power and performance.