I removed these gears (Part number 68088162AE) when switching from 3.21 to 3.92 in my truck. They are 100% functional with around 16,000 miles on the set. These gears should fit all 2013-2018 Ram 1500 trucks, but please verify fitment using provided part number prior to bidding. No refunds will be offered for improper fitment. $300 OBO. Call (406) three zero four 6060.