I now have a good inventory of hard-to-find "top entry" distributor caps with solid brass contacts! They're a well made, tight fitting cap that won't let you down! The copper terminals will last for years compared to the aluminum terminal caps, and they conduct electricity faster!. These are a heavy duty cap! These fit any 25D6 6 cylinder distributor with screw-in plug wires as used on many Jaguar models. Plug wire fittings not included.