Please help with gas cap size

[lunnfun]

Hi i have a Bennington 2019 RSFB. I've lost my gas cap and can't seem to find the correct size I need. My boat is not anywhere near to measure. Bennington can't give me the size and can't ship it quick enough. Any idea? It is the thread type I know. Please help if you can I hope to buy on Amazon. All I have is a photo attached.

 

[Seadoorxpguy]

I mean you're best bet might be just order a few different sizes from amazon and send back whatever doesn't fit

 

[lunnfun]

Thank you I’ve ordered a few don’t think they are right size. ‍

 

[CLDave]

This one looks correct, but no guarantees: https://a.co/d/czenyiz

Good luck!

 

[ILLINOIS AVE]

Welcome! Dealer item ?