Give your 2018-2021 Ford 3.0L Powerstroke the Ring & Pinion set you need to re-gear for your new wheel & tire combo. These gear sets are available in a variety of ratios from 3.31 to 5.38 to suit your needs. You'll find many options of front and rear differential gear sets. Find high-quality brands like Nitro, Dorman, USA Standard, and Yukon for gear and axle components.