This 3.73 ratio ring and pinion gear set fits 84-01 Jeep XJ and 87-06 Wranglers (YJ/TJ) with Dana 35 rear axle. Uses eight 3/8 inch ring gear bolts. These affordable high strength gear sets come in all the popular ratios to satisfy everyone's gearing needs. Oversized tires require higher ring and pinion ratios to restore performance. Made from high quality 8620 forgings and Gleason gear cutting technology, these gears are made to last. Complete installation kits are available separately to complete the job. Exclusive 5-year warranty.