JRL Petrol Gas Cap For STIHL FS38 FS48 FS52 FS55 FS56 FS62 FS66 FS72 Trimmer Fits: STIHL STIHL FS38 FS55 FS66 FS75 FS80 FS81 KM55 KM85 Package Include: 1* Gas Cap Note: This is an aftermarket replacement part. Please compare its appearance, shape and size with your original unit and make sure that it can fit your machine before ordering.