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.

At Harold's Used Auto Parts Inc in Philadelphia, PA, we know that diesel engines play a huge role in many of our customers' daily ways of life. If you drive a Duramax, Powerstroke, or Cummins diesel pickup, you obviously appreciate the power of the diesel engine. Diesel engines are prevalent all over the road, but where did it all start, and why are diesel engines most commonly found in trucks today? 

If you drive a diesel vehicle, it’s because you know that quality matters. At Harold's Used Auto Parts Inc in Philadelphia, PA, we built our reputation on quality. We chose to work on quality products because it’s something that we ourselves believe in, and strive for daily.

Whether you drive a Ford, Chevy, or Ram diesel pickup, it’s especially important that you always seek high-quality repair and maintenance from qualified professionals. At Harold's Used Auto Parts Inc in Philadelphia, PA, we specialize in diesel vehicles and the ins and outs of diesel servicing. There are plenty of shops out there that can replace a part or perform a job, but it’s important that the technicians doing the work know what they’re doing, why they’re doing it, and are doing it right.

Do you need new brake pads? Most of the time, if you think you do, the answer is yes. While a lot of auto parts stores sell brake pads with lifetime warranties, don’t be misled...brake pads will still wear down.

Whether you drive a Chevy, Ram, or Ford diesel pickup, we have you covered. At Harold's Used Auto Parts Inc in Philadelphia, PA, we can do it all - and a big part of that is done by employing ASE certified technicians.

Your truck’s alignment is an essential aspect of its reliability and ride quality. From Harold's Used Auto Parts Inc in Philadelphia, PA, here’s what you should know about the alignment on your Chevrolet, Dodge, or Ford diesel pickup, from symptoms to keep an eye on, to how it affects your vehicle.

At Harold's Used Auto Parts Inc in Philadelphia, PA, we know your Ford, Chevrolet, or Dodge pickup was designed for optimal power, torque, and towing and hauling ability, no matter what the job is. We also know that while getting up to speed in a timely fashion is important, your diesel pickup’s ability to stop is equally essential.

At Harold's Used Auto Parts Inc in Philadelphia, PA, our objective is to keep your diesel truck on the road, where it belongs. Whether it’s maintenance, repair, or information that keeps you from needing a repair, we do our best to keep you informed on how to best take care of your diesel truck. Cavitation is a leading killer of diesel engines. It’s an interesting process, albeit an expensive one if your diesel engine is a victim of cavitation. From our team here at Harold's Used Auto Parts Inc, here's what you should look out for:

At Harold's Used Auto Parts Inc in Philadelphia, PA, our technicians have a wide variety of top of the line tools and equipment available to diagnose and repair your Chevrolet, Ford, or Dodge diesel pickup. We utilize equipment at the forefront of technological innovation to best provide for the specific needs of your truck.

On gas engines, the fuel delivery system is pretty simple - an electric pump draws gas from the tank, and pushes it to the injectors. Diesel systems are a little more complex. At Harold's Used Auto Parts Inc in Philadelphia, PA, we like to keep you informed about what’s on your truck, how it works, and how to maintain it, so you stay reliably on the road.

Your fuel system is comprised of a variety of parts, each tasked with keeping your engine running strong - Chevy, Ford, and Ram all have small differences, and diesel systems have changed over the years with innovation in the field; however, the fundamentals haven’t changed. At Harold's Used Auto Parts Inc, our technicians are familiar with the differences between models and generations, but for the intents and purposes here they aren’t necessary to know. Here’s an overview of the major components you’ll find in most diesel fuel systems.

Diesel engines are known for their reliability - that’s probably at least partially why you bought one. However, like all things, diesels and their components wear out eventually. Fortunately, the technicians at Harold's Used Auto Parts Inc in Philadelphia, PA have you covered. Here are some fuel system issues to watch out for.

Now that you’ve got an idea of the components that make up a diesel system, and what they do, understanding how the system works in a more cohesive way isn’t difficult. At Harold's Used Auto Parts Inc in Philadelphia we understand what’s going on in your fuel system while your diesel engine is running.

Good diesel technicians and shops that service diesel engines are hard to come by. At Harold's Used Auto Parts Inc in Philadelphia, PA, diesels are our specialty. There are many reasons to have diesel truck maintenance performed by diesel specialists - here are just a few.

When it comes to installing new tires on your Dodge, Chevy, or Ford diesel pickup, you want it done right the first time. Our technicians have the equipment necessary to get you cruising smoothly down the road in no time.

Whether you drive a Ram, Chevy, or Ford diesel pickup, our expert technicians have the know-how you need - from trivia to engine rebuilds, we’ve got you covered.

Increasingly, technology in automobiles is becoming more sophisticated, and more and more systems have become reliant on electronic control modules to operate. At Harold's Used Auto Parts Inc in Philadelphia, PA, we have the trained technicians and the equipment necessary to deal with issues that arise as a result of these components.

The engine in your Chevrolet, Dodge, or Ford diesel pickup is the heart and soul of your truck. At Harold's Used Auto Parts Inc in Philadelphia, PA, we repair, rebuild, and replace engines with quality parts and builds, keeping your truck on the road for years to come.

Performance chip installation is one of the perks of diesel truck ownership. At Harold's Used Auto Parts Inc in Philadelphia, PA, our mechanics can professionally tune and install a chip for any application, whether you drive a Cummins, Powerstroke, Duramax, or otherwise.