The 91-37241 puller plate is a factory original equipment item that is a universal tool used for pulling bearings off of gears and shafts on Mercury Marine, Mariner, Mercury Racing, and Mercruiser products. MSRP is $187.38.
 
The Buckshot Racing #77 Bearing & Gear Puller Plate meets or exceeds the spec of the OEM part. We used this for many applications around the shop including pulling the ball bearing off the end of cranks. It's also a universal too, that will fit most gears and bearings found stuck on 1/2 inch to 4-9/16 inch shafts.
 
The photos of this part don't do it justice, it's a heavy-duty professional shop-grade piece of equipment for anyone doing power head, lower unit, and gear case rebuilds.