ORIGINAL EMAK AIR FILTER SUPPORT 50230068R 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 44 (Euro 0) Chainsaw Crankcase GS 44 (Euro 1) Chainsaw Crankcase GS 440 (Euro 2) Chainsaw Crankcase GS 45 (Euro 1) Chainsaw Crankcase GS 451 (Euro 2) Chainsaw Crankcase GS 451 (Euro 2) 50Y Chainsaw Crankcase