This high-quality distributor cap from P&D Ignition is designed for vintage Buick, Cadillac, Oldsmobile, and Packard V8 engines from the 1950s. It is made of durable aluminum material with an unfinished finish and features a plug wire retainer attached for added convenience. The clamp-on mounting style ensures easy installation, and it has interchange part number D305 and OE/OEM part number 1917247. This vintage part is made in the United States and is an essential component of your car's ignition system. Get your engine running smoothly with this reliable distributor cap.