HURI Air Filter Fuel Filter Spark Plug Primer Bulb for Stihl FS90 FS100 FS110 FS130 4 Mix Engine Replacement parts,non original Fit Stihl FS90 FS100 FS110 FS130 4 mix engine Replace 4180-120-1800 Package include 2pcs air filters + 2pcs fuel filters + 1pc spark plug + 5pcs primer bulbs + 1pc HURI pocket tape Note:you could apply for a full refund if you didn't receive HURI branded pocket tape.