Is this kind of rad cap "universal"???

[bull996]

Need a 21 lb rad cap, and the type i have is similar to the one on the link below.

Question is, is it likely to fit, as there are no cars listed on the ad?

Thanks

http://www.ebay.co.uk/itm/Stant-Racing-Radiator-Ca...

[Eggman]

I've only ever come across two sizes of that style of radiator cap - the larger, 'normal' size that used to fit nearly everything before screw-on caps became common, and a smaller size I've seen mainly on Japanese cars. Within sizes, the bayonet fitting seems to be universal. The one in the ad looks to be of the smaller type, but it might be worth asking the seller to tell you its dimensions.

[bull996]

Thanks