Cometic C5269-120 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.060

The Cometic C5269-120 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Generation 1 Chevrolet Small Block V8 engines. This gasket features a .120" (3.0mm) compressed thickness and is designed for 4.060" bore applications, making it ideal for performance builds and engines with mild overbores.

Key Specifications:

• Bore Size: 4.060 inches
• Compressed Thickness: .120 inches (3.0mm)
• Construction: Multi-Layer Steel (MLS)
• Head Angle Compatibility: 18-degree and 23-degree cylinder heads
• Valve Pockets: Pre-pocketed bore design for valve clearance

Features and Benefits:

• MLS construction provides superior sealing and durability under high cylinder pressures
• Accommodates both 18-degree and 23-degree aftermarket performance cylinder heads
• Valve pocketed design prevents interference with larger valves common in performance heads
• Compressed thickness allows for precise compression ratio tuning
• Designed to withstand extreme temperatures and cylinder pressures in racing and high-performance applications

Cometic's MLS gaskets feature multiple layers of stainless steel with elastomeric coatings that micro-seal imperfections in the sealing surfaces. This design provides excellent rebound characteristics and maintains sealing integrity through repeated heat cycles. The gasket is compatible with aluminum and iron cylinder heads and blocks.

This gasket is specifically designed for Generation 1 Chevrolet Small Block V8 engines (265, 283, 302, 305, 327, 350, and 400 cubic inch variants) when bored to 4.060". Proper surface preparation and torque specifications are critical for optimal performance.