Cometic C5769-089 MLS Cylinder Head Gasket Pontiac Bore - 400/428/455 V8 4.200

The Cometic C5769-089 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-manufactured gasket features a 4.200-inch bore diameter and a compressed thickness of .089 inches, providing an excellent balance of sealing performance and compression optimization.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• .089-inch compressed gasket thickness
• 4.200-inch bore diameter designed for Pontiac big-block V8 engines
• Engineered to withstand high cylinder pressures and extreme temperatures
• Eliminates the need for additional sealants when properly installed
• Ideal for performance, racing, and high-boost applications

Cometic's MLS gaskets feature multiple layers of stainless steel with elastomeric coatings that provide exceptional recovery and sealing characteristics. The embossed design allows the gasket to conform to minor surface imperfections while maintaining consistent clamping pressure across the entire sealing surface. This gasket is perfect for street performance builds, forced induction applications, and racing engines that demand reliable head sealing under extreme conditions.