This is a BRAND NEW gas / fuel / petrol cap with two keys for several different models of Honda motorcycle- see compatibility list below.
This is the equivalent of Honda part number 17620-460-067
This CAP, GAS TANK fits:
1983 CB100C CB900 Custom
1980 - 1982 CB900C CB900 Custom
1981 - 1982 CB750C CB750 Custom
1982 - 1983 CB750SC CB750 Nighthawk ( Night Hawk )
1982 Cb650SC Nighthawk 650
Cm400C Custom, only the Custom model
Cb650C Custom 650
CB650 Standard model
this cap may also fit a few other Honda motorcycles