ORIGINAL EMAK WASHER 3818001R GS 37 (Euro 1) Chainsaw Crankcase GS 371 (Euro 2) Chainsaw Crankcase GS 41 (Euro 1) Chainsaw Crankcase GS 411 (Euro 2) Chainsaw Crankcase GS 45 (Euro 1) Chainsaw Crankcase GS 451 (Euro 2) Chainsaw Crankcase GS 451 (Euro 2) 50Y Chainsaw Crankcase