I'm refreshing my clutch at a local shop in a day or two and figured I might as well replace the rear main seal and possibly the t-case seal and tranny input shaft seal while we're in deep.

Does anyone have part numbers that I can take to Cummins for the rear main seal?

Does anyone have a great source for the t-case seals and the NV4500 input shaft seal?


I went to the track on Friday night and by mid track the clutch was slipping and stinking up the cab. I'm guessing that some oil has been leaking onto the flywheel making it super slick. With 89MPH trap speed, my truck was averaging less than 350HP down the track! That's a lot of slippage!