Dana 30 HD Heavy Duty Axle Parts

Dana 30 HD ring and pinion gears, axles, traction devices and more. The Dana 30 HD (Heavy Duty) variation, seen intermittently in 1999-2004 Jeep Grand Cherokee WJ (especially Quadra-Drive or higher-output models) and some 2001+ Ford Explorer IFS applications, incorporates upgraded internals like thicker tubes, reinforced housing elements, or higher-capacity bearings/seals compared to standard Dana 30s—while retaining the crush sleeve pinion preload design (CS overlap) and sharing core specs (7.2-7.625" ring gear, 26/27-spline pinion, 10 ring gear bolts, carrier break typically at 3.73). This HD version provides added durability for increased torque loads, towing, or off-road stress without stepping up to a Dana 44, making it a solid foundation for regears (popular ratios 3.73-4.88+ for tire upsizing), axle shaft upgrades (chromoly for abuse), or traction additions (lockers/limited slips) to handle heavier builds—often requiring HD-specific install kits for proper preload and alignment to avoid common issues like bearing wear or noise. Browse a wide variety of high-quality Dana 30 HD components, including precision bearings, heavy-duty shafts, ring and pinion gear sets in available ratios, traction devices like lockers, crush sleeve install kits, and overhaul parts from trusted brands, to help you rebuild, regear, or strengthen your HD Dana 30 for reliable performance in Jeep Grand Cherokee or similar vehicles.