the only difference would be the type of venting
Part: automatic oil pump oiler a-12723
Condition: good used physical shape-may or may not need a carb rebuild kit
Part: muffler with exhaust gasket and bolts
Condition: In good used shape
jonsered 621 chainsaw rear trigger handle #2 complete assembly Oil Pump the only difference would bePart: rear trigger casting handle with bottom plate housing halves, throttle trigger, safety interlock lever, rod, guide and av buffer mount Part #s 504 65 53 00, 504 06 54 00, 504 21 75 00, 504 15 73 00, 504 84 55 00, 504 12 49 00, 504 84 29 01, 504 65 54 01, 504 84 44 01, 504 65 54 01, 504 12 44 01, 504 84 54 01 Condition: good used working shape Fits: Jonsered 621