Cometic C5479-040 Ford 302/351W Windsor MLS Cylinder Head Gasket 4.060" Bore SVO

The Cometic C5479-040 is a Multi-Layer Steel (MLS) cylinder head gasket engineered for the Ford 302/351W Windsor V8 with a 4.060" round bore and a 0.040" compressed thickness, specifically designed for Ford SVO round bore engine blocks. Sold individually.

Key Specifications:

• Material: Multi-Layer Steel (MLS)
• Bore Size: 4.060" (Round Bore)
• Compressed Thickness: 0.040"
• Number of Layers: 3
• Compressed Volume: 8.486cc
• Bore Style: SVO Round Bore
• UPC: 191070034412

Key Features:

• Constructed from multiple embossed layers of stainless steel, requiring less clamp load and reducing bore distortion while maintaining a reliable combustion seal
• Outer layers feature FKM (Viton®) rubber coating — a high-temperature and chemical-resistant polymer rated to 250°C / 482°F — providing a superior micro-seal against fluids at the head and block surface
• A PTFE topcoat aids in resistance to fretting and improves cold sealing performance
• A center shim layer of uncoated stainless steel can be varied to accommodate different thickness requirements; an optional HP Shim Layer can add increased combustion seal stress
• Ideal for aluminum-to-cast-iron and aluminum-to-aluminum block/head combinations
• Designed for naturally aspirated, supercharged, turbocharged, and nitrous-fed engines
• No sealants or re-torque required — installs dry
• Not designed for use on engines with O-rings or receiver grooves
• Recommended surface finish of 50 RA (roughness average) or finer for optimal sealing

The Cometic C5479-040 MLS head gasket delivers professional-grade sealing performance for high-output small-block Ford builds. Whether rebuilding a naturally aspirated street engine or pushing the limits with forced induction, this gasket provides the durability and reliability demanded by performance applications.