View Single Post
Old 08-12-2020, 12:04 PM   #3
72Cheyenne454
Registered User
 
72Cheyenne454's Avatar
 
Join Date: Apr 2007
Location: San Diego
Posts: 453
Re: which rear main seal is the right one?

The offset lip design is helpful if your crankshaft surface has a ridge from where the old/original seal was riding. The offset seal moves the seal surface slightly to hopefully a smooth, undamaged area of the crankshaft.

All the seals I've purchased over the years, regardless of seal design, come with the little plastic piece to aid in the assembly of the seal. This plastic tab helps prevent the backside of the seal from getting chewed up as you rotate the seal into the block. You can find install videos online if needed.

Miles
72Cheyenne454 is offline   Reply With Quote