stihl ms170, ms180, 017, 018 chainsaw crankshaft ball bearing and seal new 9503 003 0311, 9503 003 1581 (st-207)
%20%23ball-bearing)
Ball bearing and oil seal for the crankshaft
Part # 9503-003-0311/ 95030030311, 9503-003-1581/95030031581
New old stock part from closed out dealer
Fits some models of Stihl MS 170, MS 180, 017, 018