I used to pump gas in my younger days, and yes, we did save caps, so go back before you buy a new one. Funny, one time this lady came in in an Acura, I fill her up and she leaves. Comes back like an hour later telling me I put the wrong gas cap on her car and she's afraid it's gonna damage the engine, because the cap says Honda Motor Co. on it. Took me like a half an hour to explain to her that Honda and Acura are the same company (and besides gas caps don't have anything to do with engines.)