4.200 MLS Head Gasket .060 - SBF SVO

The Cometic Gaskets 4.200 MLS Head Gasket .060 - SBF SVO is engineered for Small Block Ford enthusiasts and engine builders who demand precision sealing on high-performance and stock builds alike. This multi-layer steel gasket is the critical barrier between your cylinder head and block, and its quality directly impacts combustion chamber pressure retention, coolant flow integrity, and overall engine longevity. Whether you're rebuilding a classic 289 stroker, refreshing a daily driver, or assembling a performance SVO platform, a proper head gasket specification prevents costly blow-by and maintains the seal required for peak efficiency.

The .060-inch compression thickness is the critical specification here—it's the squeezed height of the gasket when your head bolts are torqued to spec. This thickness directly affects your final compression ratio and combustion chamber volume; using the correct thickness ensures your engine's dynamic compression matches the tune-up and fuel octane rating. Cometic's multi-layer steel construction provides superior blowout resistance compared to traditional composite gaskets, especially under boost or high-rpm stress. The 4.200-inch bore diameter is precisely machined to match Small Block Ford cylinder head patterns, ensuring proper alignment and consistent clamping load across all combustion chambers. This gasket is designed to maintain a reliable seal across normal and elevated operating temperatures without require re-torquing or gasket creep.

Mechanics and engine builders favor Cometic gaskets for restorations, street performance builds, and race applications across the Small Block Ford family—from carbureted vintage engines to turbocharged SVO platforms. This gasket is sold individually, so confirm your engine's exact bore and thickness requirements before ordering; using the wrong thickness specification will result in compression loss, poor sealing, or overbolting damage. Installation requires proper head bolt torque sequencing and, ideally, a torque wrench that follows your engine manual's specifications. Verify compatibility with your specific cylinder head casting and block before purchase to ensure a proper fit.