for a S1 fuel tank. Noticed mine has rust on the outer ridge where the waxoyl has come off. Don't know how bad till i get it off. Depending on price and availability i may just put a new one on rather than spend time on it. Are they readily available and how much ? Oh, need a fuel pump too. The outer casing has rusted and the pump itself is starting to rust so gonna replace that too. cheeRS in advance