ATVATP Pack of 2) Crank shaft Bearing with Oil Seal for STIHL 029 039 MS290 MS310 MS390 Chainsaw (Pack of 2) New high quality and 3 months warranty Bearing replacement P/N: 9503 003 0440 Fits Stihl 029 039 ms290 ms310 ms390 chainsaw For both the clutch and flywheel side Pack of 2