ACDelco 12747436 GM OE Engine Cylinder Head Gasket

The ACDelco 12747436 is a GM Original Equipment engine cylinder head gasket engineered to restore a precise, leak-free seal between the cylinder head and engine block. As a direct OE replacement, this gasket is manufactured to the same specifications as the component originally installed at the factory, ensuring accurate fit, form, and function without modification.

The cylinder head gasket plays a critical role in engine integrity — sealing combustion chambers while also containing coolant and oil passages between the block and head. A failed head gasket can result in coolant loss, oil contamination, overheating, white exhaust smoke, or loss of compression. Replacing it with a genuine ACDelco OE part ensures a reliable, long-lasting repair.

Key Features:

• Genuine ACDelco GM Original Equipment part — not an aftermarket imitation
• Manufactured to GM OE specifications for precise fit and dependable sealing performance
• Seals combustion chambers and coolant/oil passages between the cylinder head and engine block
• High-temperature resistant construction for durability under extreme engine operating conditions
• GM-recommended replacement for factory original components
• Designed, engineered, and tested to meet rigorous GM quality standards

ACDelco GM Original Equipment parts are the true OE components validated by General Motors, delivering the same performance, durability, and service life as your vehicle's factory-installed parts. Part number 12747436 (revision 99) is the correct OE replacement gasket for applicable GM applications.