FUEL CAP FOR Ford FOCUS II, Galaxy II, S-MAX A car fuel cap is a device that attaches to a vehicle's fuel tank to protect it from contamination, degradation and fuel leaks. It also serves to prevent dirt, debris and insects from entering the fuel tank, which could cause damage or failure. The fuel cap can be screwed on or simply clipped into place, and it is usually made of plastic or metal. For vehicles with right-hand drive (RHD) For vehicles with left-hand drive (LHD) Ford : 1589085, 6G919030AD FOCUS II In three volumes FOCUS II In three volumes FOCUS II In three volumes FOCUS II In three volumes FOCUS II In three volumes FOCUS II In three volumes FOCUS II In three volumes FOCUS II In three volumes FOCUS II In three volumes FOCUS II In three volumes FOCUS II In three volumes FOCUS II In.