Why are gas caps so expensive????

[scottso]

Geez, all I need is a gas cap for my son's 50. Why on earth are these stupid chunks of threaded plastic $20 - $25 and up!

I noticed that the cap from my Briggs and Stratton mower fits nicely - I can get one of those for about $4. That must be vented, even though there is no hose right? Can anybody comment on using that instead?

[tim colston]

as long as it is vented some way in the cap you should be cool.

[speedwheeler]

i know i'm reviving a dead thread but i'm pretty sure the hose off the gas cap is there so if someone flips it and is pinned underneath it it doesn't leak gas all over