SKU: CAGC5245-060
UPC: 191070007218
MPN: C5245-060
The Cometic Gaskets 4.060 MLS Head Gasket .060 – SBC is a precision cylinder head gasket engineered for small block Chevy engines requiring exact bore and compression specifications. Multi-layer steel construction delivers reliable sealing under high compression loads, making this gasket a critical component for engine rebuilds, performance upgrades, and stock-to-modified engine applications.
The 4.060-inch bore diameter and 0.060-inch compression thickness are precisely calibrated to match your engine's specifications. Multi-layer steel (MLS) construction provides superior conformability to deck surfaces compared to traditional solid gaskets, reducing blowby and maintaining consistent compression ratios across all cylinders. The 0.060-inch thickness is critical for achieving correct quench distance and combustion chamber volume—deviations of even 0.010 inch can affect timing advance, knock resistance, and power output. Cometic's manufacturing tolerances ensure bore diameter consistency and uniform material density, translating to reliable sealing across the entire gasket surface.
This gasket is designed for small block Chevy builders working with 350, 327, 307, and related displacement variants where bore diameter and compression thickness are critical fit parameters. Whether assembling a street engine, bracket racing platform, or vintage hot rod, the specified bore and thickness ensure proper installation without compromise to combustion chamber performance. Sold as a single gasket—verify your exact block bore diameter and desired compression thickness before ordering to ensure correct fit.
MLS gaskets have become the standard in serious engine work because they conform to imperfect deck surfaces without requiring extensive resurfacing, reduce the risk of compression loss from gasket creep, and provide predictable sealing at higher boost or nitrous pressures. For any small block Chevy rebuild prioritizing correct compression and dependable sealing, correct gasket specification is non-negotiable.
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