HIPA Air Filter with Air Filter Cover for STIHL 029 039 MS290 MS310 MS390 Chainsaw Fitment models: STIHL 029 039 MS290 MS310 MS390 Chainsaw Package include: 1pc air filter, 1pc air filter cover There are 2 kinds of air filter cover, the one we sold is for earlier chainsaws Pay attention to the differences between the earlier and later cover (watch the pictures we provided) Make sure it fit before placing an order