ACDelco 12622033 Multi-Layer Steel Cylinder Head Gasket LS9 LSA

The ACDelco 12622033 is a genuine GM Original Equipment cylinder head gasket specifically engineered for high-performance supercharged and turbocharged applications. This premium gasket is the factory OEM component used in LS9 and LSA engines, as well as supercharged LS3 and L92 6.2L engines.

Key Features:

• 7-layer multi-layer steel (MLS) construction for maximum durability and sealing performance
• 0.051-inch (0.055-inch nominal) compressed thickness
• 4.100-inch bore diameter with 4.080-inch maximum bore capacity
• Standard LS bolt pattern for direct OEM fitment
• Designed and engineered to rigorous GM standards for supercharged and turbocharged applications
• Superior heat resistance and compression sealing capability

This gasket is sold individually (two required per engine). GM Genuine Parts are validated by General Motors and provide the same performance, durability, and service life as factory original equipment. Ideal for high-boost turbo builds, supercharged engines, and performance applications where reliability is critical.