At Harold's Used Auto Parts Inc, we have earned our reputation as the top diesel repair center in Philadelphia, PA. A major aspect of that reputation is our team of expert mechanics, and another is our versatility. Our technicians have the knowledge, equipment, and ability to repair or maintain any type of diesel engine, big or small.

Whether you’re having an issue with the office pickup or the largest rig on the lot, we have all the space and expertise you need. There’s a reason we’re the best diesel truck repair facility around; we’re ready for anything. Harold's Used Auto Parts Inc is a one-stop-shop for diesel repair, for everything from oil changes to engine rebuilds. When you choose our team, you can be confident that you will get quality work done and not have to worry about being back in the shop bay soon. 

No matter what type of diesel you operate, trust Harold's Used Auto Parts Inc to keep your truck on the road. Simply call or come by, anytime, and let us know what you need. We’ve got you covered.