ITEM NAME:37MM Piston Pin Ring Bearing Fit for Stihl MS170 017 Chainsaw 1130 030 2000 37MM Piston Pin Ring Circlip Bearing Fit for Stihl MS170 017 Chainsaw 1130 030 2000 SPECIFICATIONS.Compatible with: Fit for Stihl MS170 017. 1 x Piston pin. 1 x Piston. 1 x Needle Bearing. Manufacture Part Number: 1130 030 2000, 11300302000.