Motorbike fuel cap ??

[davidimurray]

Ronnie

I have had exactly the same thought myself - I struggle to bring myself to pay £70+ pound for a filler. The only issue I can see is that they don't come with any sort of funnel so you would need to make one. You could prob do this by rolling some alu into a cone and welding one end to a flange and the other to a piece of pipe to suit your fuel hose.