I've only found one that matches .. stock bearing #6203-2RS-NR with snap ring. I found @ USA Bearings and Belts #6203-RS-12-NR with snap ring that nails it. 6203 keeps coming up as a 17mm ID and my jackshaft is a 19.05mm or 3/4 in x 40mm OD x 12mm width bearing size but the #s are the same...