SKU: avalanche 1
This pulley has both numbers on it. The 101763 is stamped in it from the factory, this is the old, original number. The 104974 is written in black sharpie, this is the new number that comes in the tin type material for the mule drives now. This is the mule drive pulley that has replaceable bearings. The pulley does not include bearings, comes as you see it.