What is this part?

The General Motors exhaust valve 12563064 is a genuine OEM engine timing component designed to control the release of exhaust gases from the combustion chamber.

What does it do?

This OEM exhaust valve opens and closes in precise synchronization with the camshaft, allowing burned exhaust gases to exit the cylinder during the exhaust stroke. A genuine General Motors exhaust valve is manufactured to factory specifications, ensuring proper seating, heat resistance, and reliable operation under high temperature and pressure. Correct exhaust valve function is essential for efficient engine breathing and stable performance.

When to replace

The General Motors exhaust valve 12563064 should be replaced if it is burned, bent, cracked, or fails to seal properly. Symptoms such as loss of compression, misfires, excessive exhaust smoke, or reduced engine performance may indicate valve failure. Replacing the valve with a genuine OEM component helps restore correct engine operation.

Compatibility

The genuine General Motors exhaust valve 12563064 is compatible with selected General Motors engines. This OEM engine component is designed to meet original valvetrain and timing specifications. Compatibility may vary by engine type and model year. Please verify the part number 12563064 before purchase.

Installation: DIY or service?

Installation of this genuine OEM General Motors exhaust valve 12563064 requires cylinder head disassembly, valve lapping, and precise adjustment. Professional installation is strongly recommended.