Diesel Trucks

  • Front & Rear Differential Services/Repair/Replacement

    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.

  • A Reputation Built on Quality

    mechanic holding a wrench

    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.

  • A Shop For Your Fleet and Diesel

    trucks on road

    At Harold's Used Auto Parts Inc in Philadelphia, PA, we have the facilities, equipment, and technicians necessary to complete any job, no matter how big or small. When it comes to fleet and diesel trucks, the right people with the correct equipment makes all the difference - we’ll keep your truck reliably on the road, and we’re the fastest, most efficient repair facility in the business. When it comes to trucks this size, and this valuable, cut-rate maintenance and repair simply won’t do; you need professionals, with the tools and equipment necessary to get the job done right.

  • Are You Choosing The Right Repair Shop?

    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.

  • ASE Certified Technicians - What Does It Mean For You?

    technician in auto shop

    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.

  • Brakes - Putting a Stop to Your Diesel

    diesel truck on a lift

    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.

  • Cavitation - How Air Bubbles Destroy Diesel Engines

    mechanic holding a wrench in auto shop

    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:

  • Cutting Edge Equipment that Fixes the Problem the First Time

    hood of truck lifted

    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.

  • Diesel Engines - Power Comes From Their Differences

    diesel maintenance

    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.

  • Diesel Isn't Difficult - Know How Your System Works

    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.

  • Diesel Maintenance - Why it Matters Who Performs It

    diesel fuel pump

    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.

  • Diesel Tires - Find the Balance

    tire

    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.

  • Do Modern Day Diesels Still Need to Warm Up?

    diesel truck

    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.

  • ECU Reprogramming

    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.

  • Engine Options for Your Diesel

    construction site with trucks on it

    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.

  • Getting the Most Out of Your Diesel

    4x4 diesel logo

    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.

  • Glow Plugs and Your Diesel Engine

    engine

    Glow Plugs are an essential component of your diesel engine. However, a faulty glow plug can go unnoticed or be neglected for quite some time; your truck will still start and run, so it’s an easy issue to overlook. At Harold's Used Auto Parts Inc in Philadelphia, we want you to know what to look for, and why you should be concerned with a bad glow plug.

  • Have You Changed Your Oil Lately?

    Oil being poured into a diesel vehicle

    If you drive a Dodge, Chevy, or Ford diesel pickup, you know the amount of hard work your truck puts in. You may also be aware that diesels run a little dirtier than your average gas burner. At Harold's Used Auto Parts Inc in Philadelphia, PA, our goal is to keep your Duramax, Cummins, or Powerstroke truck on the road for many miles to come. A huge part of that is keeping your oil maintained.

  • How Do Diesel Systems Work & What Maintenance Do They Need

    diesel truck photo

    No matter what type of fleet vehicles or commercial trucks you maintain, the fuel system on your diesel is an integral part of keeping you on the road. Gas systems are pretty simple - there’s basically just a pump that pushes gasoline to the injectors. Diesels are a bit more complicated.

  • How To Increase Your Performance When Taking Your Diesel Off-Road Or Towing!

    Truck Off Road, driving through mud

    Is your diesel used for off-roading or towing? Are you looking for an increase in performance for your Cummins, Powerstroke, or Duramax truck? If so, a billet torque converter may be an option you’d like to consider. Here’s what you need to know about billet torque converters, from Harold's Used Auto Parts Inc in Philadelphia, PA.

  • Jasper
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  • ASE
  • Auto Zone
  • Berrodin
  • BF Goodrich
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  • Bridgestone Firestone
  • Cooper Tires
  • Customer Savings
  • Dunlop Tires
  • Fleet Services
  • Goodyear
  • Handicap Accessible
  • Hankook Tires
  • JASPER Marine
  • Kelly Tires
  • Michelin
  • Mastercraft
  • Motorcraft Parts
  • Pet Friendly
  • Radiator
  • State Inspection
  • Sumitomo Tires
  • Tires
  • Towing
  • Toyo
  • Uniroyal
  • 12 Month Warranty
  • Wifi Available

5347 Whitby Ave
        Philadelphia, PA

(215) 472-1552
Email the Shop
MON-FRI | 8:30 AM - 5:30 PM
SAT | 8:30 AM - 2:00 PM
SUN | CLOSED
Closed every third Saturday of the month