Cometic C5711-066 MLS Cylinder Head Gasket Pontiac Bore - 400/428/455 V8 4.160

The Cometic C5711-066 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Pontiac 400, 428, and 455 cubic inch V8 engines. This precision-engineered gasket features a 4.160-inch bore diameter and .066-inch compressed thickness, providing an excellent balance of sealing performance and compression optimization.

Key Features:

• Multi-Layer Steel construction for superior strength and durability
• .066-inch (1.68mm) compressed gasket thickness
• 4.160-inch bore diameter designed for Pontiac big-block V8 engines
• MLS design allows for engine movement and thermal expansion
• Embossed stainless steel layers with advanced coating technology
• Excellent for high-performance, turbocharged, and supercharged applications
• Reusable in most applications when properly installed

Cometic MLS gaskets feature multiple layers of stainless steel with proprietary coatings that provide maximum sealing performance under extreme temperatures and pressures. The gasket's design accommodates cylinder head and block movement while maintaining a reliable seal, making it ideal for street performance and racing applications. Compatible with Pontiac 400, 428, and 455 V8 engines with a 4.160-inch bore size.