GENUINE FIAT Accessories 05278655AB Locking Gas Cap for Fiat 500/500C Genuine OEM fit Genuine Fiat accessory Locking gas cap helps guard against theft or contamination of fuel Constructed of plastic with stainless steel key and lock; the design features sturdy construction to meet Federal Fuel safety standards for fuel leakage Kit includes a black quick-on/off, quarter-turn, locking gas cap and two keys