Cometic C15262-030 Pontiac MLS Head Gasket Bore - 326/389/421 V8 4.300

The Cometic C15262-030 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Pontiac 326, 389, and 421 cubic inch V8 engines. This precision-manufactured gasket features a 4.300-inch bore diameter and .030-inch compressed thickness, making it ideal for performance builds and engine rebuilds requiring exact sealing specifications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• .030-inch compressed thickness for precise compression ratio tuning
• 4.300-inch bore diameter designed for Pontiac V8 applications
• Advanced materials resist temperature extremes and combustion pressure
• Engineered for stock and performance applications
• Eliminates the need for re-torque after initial installation

Cometic MLS gaskets utilize multiple layers of stainless steel with a Viton rubber coating to provide exceptional sealing capabilities. The embossed sealing beads around combustion chambers, coolant passages, and oil ports ensure leak-free performance even under extreme conditions. This gasket is compatible with aluminum and cast iron cylinder heads when paired with properly prepared surfaces.