I have a 85 Toyota 4 runner with a recent rebuild (200 miles on it) I even bought a new timing cover/oil pump..ect. Everything runs great but I have a front seal leak. I have replaced it twice and I still have a leak! So I decided to got Toyota and get a new factory seal but after comparing the seal with a after market seal I noticed the Toyota seal was thinner?? Did I receive the wrong seal from Toyota or what? (just to be safe I ordered a new harmonic balancer to eliminate that variable too) any help would be much appreciated! sorry if the photos doesn't work.

 

The seals ride in a different place on the balencer. Iirc, toyota "updated" the seal, so that trucks with a leaky seal even after the new seal, could get the updated one to fix the leak.

 

I got that same seal from Toyota (the thin one on the right), put it in this weekend and no leaks what so ever. Just make sure its seated good in the oil pump housing.

 

Yep gave it a go this week and it held up great! lesson learned on aftermarket parts...Go with Toyota!

 

What was the part number for it? Are lowranges gaskets toyota ones?

 

Not sure about the gaskets? I'm at work now but I will find the number for the seal when I get home.

 

here is the part number for the front seal 90311-45014