The differentials on your Ford, Chevrolet, or Dodge diesel pickup are some of the hardest working components on your truck. At Harold's Used Auto Parts Inc in Philadelphia, PA, our technicians are experts in maintaining, repairing, and replacing differentials, keeping your truck reliably on the road.

Your differential - or both differentials, if you have a 4x4 - are sturdy and reliable components. However, diesel trucks are already the largest and heaviest passenger vehicles on the road, even before they are loaded down or hooked up to a trailer. Whenever your truck is in gear, and every time you hit the throttle, every ounce of torque and horsepower your engine produces goes through the differential to turn the wheels. The added bonus of the weight of the truck (and whatever you’re hauling) sums up to an enormous amount of stress concentrated at the differential. While proper maintenance like gear oil servicing goes a long way towards extending the life of a differential, gears eventually wear out, seals deteriorate, and axles fail.

When that happens, it can leave your truck incapacitated, or at the very least in a fragile state. That doesn’t mean it’s time to head for the scrap yard just yet, however. At Harold's Used Auto Parts Inc, we can repair, rebuild, or replace your differential, depending on the issue and your specific needs. We always use OEM or better replacement parts, and always provide top quality service.

Whether you need your fluid level checked or an entire differential overhaul, our technicians have you covered. For the best diesel truck repair shop in Philadelphia, PA, call or stop by Harold's Used Auto Parts Inc today.