Joseph Davis
Full Access Member
I am replacing the rear Main seal on my 7.3l idi and when buying rear main seal Fel-Pro sell an O-ring that is called an O-ring protector for the rear main seal. looks like it fits in the groove around crankshaft. I know to make sure that I put the new rear main seal in at exact same depth as old one. I have never seen an O-ring protector before and was wondering if they Work to fill in the cut line around crankshaft?
Last edited: