The product is a set of 4 ACDelco spark plugs, specifically designed for Chevrolet, Buick, Pontiac, and Saturn vehicles manufactured between 1992 and 2010. The part number is 41-601 and it is a direct replacement for OEM GM 19158002 spark plugs. These spark plugs are suitable for ignition systems and are interchangeable with part numbers 19354417 and 19158002.