Cometic C5272-027 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 Gen-1 4.165

Cometic C5272-027 Multi-Layer Steel Cylinder Head Gasket

The Cometic C5272-027 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Chevrolet Gen-1 Small Block V8 engines. This premium gasket features a 4.165-inch bore diameter and .027-inch compressed thickness, providing reliable sealing for both stock and performance applications.

Key Features

• Multi-Layer Steel Construction: Composed of multiple layers of stainless steel with advanced coatings for superior sealing and durability
• Precision Bore Size: 4.165-inch bore diameter accommodates standard and slightly overbored small block Chevy engines
• Compressed Thickness: .027-inch (27 thousandths) compressed gasket thickness allows for precise compression ratio tuning
• Valve Pocket Design: Features valve pockets to accommodate aftermarket cylinder heads and larger valves
• 18/23 Degree Head Compatibility: Engineered for 18-degree and 23-degree valve angle cylinder heads commonly found in performance applications
• Steam Hole Equipped: Includes steam holes for optimal coolant circulation and heat dissipation

Why Choose MLS Gaskets?

Cometic's Multi-Layer Steel gaskets provide exceptional resistance to extreme cylinder pressures and temperatures. The multiple layers of stainless steel work independently to absorb minor surface imperfections while maintaining a superior seal. The proprietary coating ensures excellent recovery properties and resistance to corrosion, making these gaskets ideal for high-performance street, race, and forced induction applications.

Application

This gasket is designed for Chevrolet Generation 1 Small Block V8 engines (262-400 cubic inches) with aftermarket performance heads featuring 18-degree or 23-degree valve angles. Compatible with both naturally aspirated and boosted applications.

Installation Notes

MLS gaskets require a surface finish of 50 RA or smoother for optimal performance. Both the block deck and cylinder head surfaces should be flat and free from imperfections. No additional sealants are required when properly installed. Cometic recommends re-torquing head bolts after initial heat cycles following manufacturer specifications.