Valve cover stud kit for all Oldsmobile V-8 engines (330-350-400-425-455) except 403. The easiest way to install new valve cover gaskets is to use studs to hold the gasket in place while installing the valve cover. Includes 20 bolts, nuts, and washers. For 403 engines order DMR-5426-2 which includes 10 bolts, nuts, and washers.