I don't think that is the right bearing, It looks like a 6001
I rebuilt a Jabsco ballast pump a few years ago, and when i bought the bearings, i had to get a few extras to make up a minimum order value.
I still have 1 sitting in my drawer
NSK part# is 627z. Now it was several years ago, but I'm pretty sure this is the correct bearing. Only cost me about $3 each if i remember correctly. I assume you have stores in the States that specialize in bearings and seals. Bearing dimensions are: