ATVATP Chainsaw Air filter Cover for STIHL MS290 MS310 MS390 029 039 Chainsaw 1127 140 1900 Replaces Part # 1127 140 1900 , 11271401900 Package including: 1x Air Filter Cover Fits MS290 MS310 MS390 029 039 chainsaw Caution: The cover won't fit STIHL MS290 Farm Boss