Thermos Style Fuel Caps

[edasmus]

I'm not familiar with the fuel caps on the 65 model but on my 1973 337G model I was able to replace all the rubber on my fuel plugs from a company in Wisconsin....

Petersen Products Co, LLC
421 Wheeler Avenue
P.O. Box 340
Fredonia, WI 53021-0340

Phone: 262-692-2416

petersenproducts.com

Search "lever type expandable rubber plugs"

The plugs look curiously similar to the factory rubber fuel plugs that were in my C337 but the plugs are not vented.

I measured the size of the fuel port and purchased a few different sizes because I was never happy with the fit of the original Cessna plugs. Off hand I cannot recall the dimension I ended up using but I was able to find a very snug fit that I am very confident in for not much money, even though I ended up with plugs I did not use. It was not worth the effort to return them and the folks there were very helpful.

I simply disassembled the plug that I purchased and used the neoprene rubber that came with the new plug. The rubber was all I was after. They would not sell me just the rubber only the entire cap assembly.

I used the new rubber on the original Cessna vented cap and all is right with the new plug.

Good Luck.....

Ed