Chrome locking filler cap with 2 keys to fit :
Thunderbird 900, Legend, Thunderbird Sport, and Adventurer.
Cap is fitted with low cost style lock/keys which gives security to the fuel tank access. The cap works in reverse to what you would expect, with the cap ‘locked’ it will screw in/out. When you ‘unlock’ the cap and remove the key it just spins round and round and there’s no way to get into the tank. Chrome and black threaded section are all one assembly and remove as one. The fuel filler neck needs to be in good condition for the cap seal to function ok.