Give your 2007-2008 Jeep Grand Cherokee 3.0L CRD the Ring & Pinion set you need to re-gear for your new wheel & tire combo. You'll find many options of front and rear differential gear sets. Offered in ratios from 3.31 to 5.38, these gear sets are available in a wide range to fit your needs. Find high-quality brands like Nitro, Dorman, USA Standard, and Yukon for gear and axle components.