Here's a very nicely chromed, brass cap with a sprung release catch and sprung lid.
We call it a finishing cap because there is no seal between the cap and the neck limiting its functionality as a stand-alone fuel filler cap.
However it looks superb as a decorative cover for your existing fuel cap. The neck is designed to fit on to a 61mm diameter steel or aluminium tube and is secured with three grub screws.
ASTON FINISHING CAP #AST61
FITTING IDEA: Our #FLA212 almost fits. If you have access to a lathe you can remove the tops of the threads until it's a nice fit in the cap. It still won't be a functional cap but you'll have a smart mounting flange on a smart cap. Weight 424 gms.