48mm Piston Ring Pin Circlip Kit For Husqvarna 61 Jonsered 630 Needle Bearing Oil Seal Chainsaw Replacement Spare Part For Husqvarna 61 chainsaw part Replace OEM for 503517401, 503260204 Piston diameter 48mm Pin OD 12mm Package include 1 x Piston, 1 x Pin, 1 x Ring, 2 x Circlip, 2 x Oil Seal, 1 x Needle Bearing