I had the same issue. I rebuilt the stock fuel pump with a rebuild kit for a Precision Fuel M22010 found at O'Reilly Auto Parts for $19.99. All the parts are an exact match.
This pic the arm is WRONG, mines bent down, i've bought several pumps all had to be returned, might have to remove the arm and swap over as the rest of pump is the same
Can you send me the link, all i see is the pump for $56, my motor uses a weird pump arm, mercruiser never used it, only OMC used a few years, it's not as easy as all of you are saying, have been looking for years now, got a free same boat last yr, the pump was broken....ohh well, thanks for your reply's