Get the Ring & Pinion you need to re-gear for larger tires in your 1998.5-2002 Dodge 5.9L Diesel. You'll find many options of front and rear differential gear sets. Ratios ranging from 3.31 all the way up to 5.38 are available for most applications. Dorman, USA Standard, Yukon, and Nitro are just some of the industry leading brands you can find for gear and axle components.