4.600 MLS Head Gasket .045 - Ford A460

The Cometic Gaskets 4.600 MLS Head Gasket .045 – Ford A460 is a precision cylinder head gasket designed specifically for big block Ford engines that require a 4.600-inch bore and a 0.045-inch compression thickness. This gasket is essential for builders, engine shops, and automotive enthusiasts who are restoring or modifying big block Ford powerplants, ensuring leak-free performance and long-term reliability.

Constructed from multi-layer steel (MLS), the 4.600 MLS Head Gasket provides superior conformability and reusability compared to traditional composite gaskets. It is engineered to maintain sealing integrity under extreme heat and pressure, effectively containing combustion pressure, coolant passages, and oil galleries. The 0.045-inch compression thickness is a critical specification that influences combustion chamber volume and compression ratio, which are vital for engine tuning and performance calibration.

This gasket is manufactured to exacting OEM tolerances and is specifically sized for the A460 cylinder head casting, ensuring proper fitment and clamp load distribution across all ports and passages. It is particularly beneficial for high-compression and forced-induction applications, resisting blow-by and thermal fatigue that are common in modified or race engines. Anyone involved in rebuilding, resurfacing, or upgrading big block Ford engines will find this gasket indispensable.