ACDelco 12633926 Valve Stem Oil Seal

The ACDelco 12633926 Valve Stem Oil Seal is a GM Genuine Parts component designed to control oil lubrication to the valve stem as it moves within the valve guide. This precision-engineered seal prevents excess oil from entering the combustion chamber, helping to reduce oil consumption, prevent fouled spark plugs, and protect catalytic converter performance.

Key Features:

• GM Genuine Parts quality - designed, engineered, and tested to rigorous General Motors standards
• True OE part installed during production or validated by General Motors for GM vehicles
• Controls oil flow to ensure proper valve stem lubrication while preventing excess oil consumption
• Helps prevent fouled spark plugs and catalytic converter degradation
• Precision-manufactured for exact fit and function on specified GM applications
• Backed by General Motors quality assurance

This valve stem oil seal is an essential engine component that meters the correct amount of oil to lubricate the valve stem while acting as a squeegee to prevent excess oil from passing into the combustion chamber. Regular replacement during engine service helps maintain optimal engine performance and efficiency in Chevrolet, Buick, GMC, and Cadillac vehicles.