Rotten Ralphy Posted June 3, 2020 Share Posted June 3, 2020 Can anyone (rhetorical.. I know) tell me for certain if the 88 4L has a split or one piece rear main bearing? Link to comment Share on other sites More sharing options...
Limeyjeeper Posted June 3, 2020 Share Posted June 3, 2020 All 4.0 engines including your 1988 have a 2 piece rear main seal. I would use a Victor Reinz seal part no 191006301. They improved the design a bit. Link to comment Share on other sites More sharing options...
Pete M Posted June 3, 2020 Share Posted June 3, 2020 I hate the split design, but do love that we can swap it out without dropping the transmission. that's a sweet perk. Link to comment Share on other sites More sharing options...
Fernando87mj Posted June 3, 2020 Share Posted June 3, 2020 I Literally Just got done doing this today on my wj. Took me around 5 hours but because the previous person that did this used way to much rtv on everything and clean up took a long time. I’d recommend using the blue fepro gasket. It includes these snap ups that hold up your gasket while you put your oil pan on. It made installation much much easier. Link to comment Share on other sites More sharing options...
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