5/8 conversion pulley good for early chevy 6 and flathead fords. keep your existing pulleys when converting to an alternator.
fits gm style alternators with a 17mm shaft , OD 3-1/16, no slot for a key.
NOTE: finish may be clear zinc, yellow cad, or black painted. the supplier sends me all 3 finishes depending on inventory. If one or another finish is a problem let me know and I will tell you what I have. thanks Rick
