Lost part - Is it important??

[Ollypowell]

Hello everybody,

I have a query regarding a lost part which seems impossible to find a replacement for in the uk.

It's just the screw-cap 'lid' that fits onto the external filling up point at the bottom of my car.

https://m.ebay.co.uk/itm/STEP-Fuel-tank-cap-screw-LPG-tank-Fuel-tank-LPG-LPG-/122456598561

This what the part looks like. Does anyone know where I can find one in the U.K.?

If not does it so important to have - will the tank leak/loose fuel without the cap in place?

Thanks guys

[Lpgc]

So impossible to find that you've provided a link to one for sale on Ebay lol?