Max Capacity Posted September 23, 2014 Share Posted September 23, 2014 OK what's the deal or difference. Today I stopped by the dealer and picked up the left and right side seals, two different part numbers. Above the p/n on each bag is printed 35x50x9. Are they in fact the same size ? The last 3 numbers in the p/n are different 806735290 for the left and 806735300 for the right. I have the receipt in the car, I'll verify the p/n when I get home. Is there really a difference in them ? FWIW the tail shaft seal is 35x50x11. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
caramall2 Posted September 25, 2014 Share Posted September 25, 2014 Didn't even notice...I just gave them to a shop to use when installing my trans. Will be curious on the answer. Link to comment Share on other sites More sharing options...
spritefiend Posted September 25, 2014 Share Posted September 25, 2014 Yes they are different, one is a right other is a left. Not sure of the physical difference. When I recently had mine changed, I just handed them over and they installed them. Link to comment Share on other sites More sharing options...
ras06LGT Posted September 26, 2014 Share Posted September 26, 2014 I was curious when I did mine as well why there were two part numbers. The dimensions of the two seals appear to be the same. The best I could see from looking at them is the small ridges/ribs on the inside of the outer-most seal lip are actually directional for some reason. If you picture them in the vehicle position (and if I'm remembering correctly from when I did them), the pattern will face forward for both sides (so the seals are essentially mirrored to one another). If the same part was used L/R, then one side would have this pattern backwards. I don't know what these ribs are supposed to do functionally, but that's the best I could come up with. Maybe they are designed to reduce the drag on the half shafts (or seal better) in the primary direction of rotation. I could also be way out in left field with this... Link to comment Share on other sites More sharing options...
Max Capacity Posted September 26, 2014 Author Share Posted September 26, 2014 I would think the ribs direct the oil back into the tranny case. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Max Capacity Posted September 30, 2014 Author Share Posted September 30, 2014 Last night I mentioned this question to my tranny guy. He knew exactly what the difference was. Yes, its those little wipers. They are directional. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
mustangendsley Posted October 13, 2014 Share Posted October 13, 2014 i know this is old but if you look at the seal inbetween 2 dots will be a very small r or l very very small. a suby mech showed me. Link to comment Share on other sites More sharing options...
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