The ACDelco AC CV679C PCV Valve is a brand new genuine GM product made in the United States. It is designed as an air bypass valve for exhaust and emission systems in cars and trucks. With the manufacturer part number CV679C and other part number 6421972, this PCV valve ensures quality and compatibility with various vehicle models. Perfect for car enthusiasts looking to replace or upgrade their PCV valve, this ACDelco product offers reliability and performance.