I have a very leaky shift tower in my nv3550. I have been looking for parts for awhile now and Just stumbled across these seals made by amp drivetrain. Anyone have any reviews on these? I am going to go ahead and order some as I hate to keep checking trans fluid level, and red line isn't getting any cheaper...
Ordered the seals. They came in very quickly, and were well packaged. I ordered these before tearing into the project. I found the shifter gasket bolts to be loose, causing the leak. However, the shift boot gasket had a tear anyway so I replaced both. Seals are of good quality (very similar to mopar, if not exact). Took a 1500km road trip with the seals and no leaks. If they become an issue I will update, but am satisfied with the purchase. I will have 2 other good gaskets for sale as well.
If you've ever taken the shift tower off for any reason, I highly suggest taking a look at the 4 bolts that hold it down. Mine had backed off to hand tight. This is what I found inside: