Cometic C5712-060 Pontiac MLS Cylinder Head Gasket Bore - 400/428/455 V8 4.300

The Cometic C5712-060 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Pontiac 400, 428, and 455 cubic inch V8 engines. This precision gasket features a 4.300-inch bore diameter and .060-inch (1.52mm) compressed thickness, making it ideal for performance builds and engine rebuilds requiring superior sealing capabilities.

Key Features:

• Multi-Layer Steel construction provides exceptional strength and durability under extreme cylinder pressures
• .060-inch compressed thickness allows for fine-tuning compression ratios in performance applications
• 4.300-inch bore diameter optimized for Pontiac V8 cylinder dimensions
• Advanced gasket design resists blowout and maintains consistent seal under high heat and pressure
• Compatible with Pontiac 400, 428, and 455 cubic inch V8 engines
• Engineered for both street performance and racing applications

Cometic MLS gaskets feature multiple layers of stainless steel with specialized coatings that provide micro-sealing at the head-to-block surface. This design accommodates thermal expansion and engine movement while maintaining reliable combustion sealing, making it an excellent choice for modified engines with increased horsepower and cylinder pressure.