Chevy529
Newbie
Thanks for that. Mine is 4.18" including what I think is the white hardened material that adhered the wrap. So probably 4" untouched. It's odd to me that they used a variety of different shafts within a couple years. Whats odder (is that a word?) Is they would have a larger size on your 2wd. Weird not as much weight . At the wrecker for 1997 k1500 I saw 2 aluminium sizes and one steel. Assuming they put the correct info on it. I should have waited till I knew more. Teach me for trusting someone.So I finally found time to get under my truck. The driveshaft is a one-piece aluminum shaft, with an outside diameter of 5 inches. (I actually got 5.09). No wrap at all on the one in my truck, and no evidence that it ever had anything other than a raw aluminum finish. The truck is a 98 C1500 RCLB 2Wd.