Those main bearings are a PITA to change when its the middle of the winter and you suddenly loose your speedometer, then the awe crap hits you. lol Based on the fact that it is the middle of the summer and your sled is due if they have not been changed up till this point. I would replace all 4 just to be on the safe side, although I think they were like 40 dollars a pop each one on my 2002. NWR
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