If you drive a performance or luxury vehicle, you know that your precision engineered equipment demands precision tuning. At Harold's Used Auto Parts Inc in Philadelphia, PA, we specialize in high-end imports and performance vehicles and keeping them up to par.

Specifications, including tolerances and clearances, are a crucial aspect of keeping any performance vehicle reliable and at its full potential. Down to a thousandth of an inch, measurements on valve clearance, bearing wear, component play, and so on are mindfully perfected and kept ensuring the longest-lasting, best running vehicle possible.

As a result of heat, wear and tear, and age, components on your vehicle will fall out of spec from time to time - sometimes you will notice the performance difference, sometimes you may not until it’s too late. Tolerances and clearances checked at regular intervals ensure your car is lubricating, timed, and performing as it should. On high-performance vehicles, especially on custom builds, correct specifications are incredibly important; everything is precision tuned to work exactly the way it’s supposed to, and when even a little bit of sloppy maintenance comes into play, things can go south in a hurry. Make sure your car is up to speed with our trusted technicians.

For all your customization, maintenance, and repair needs, our technicians have you covered. Our focus is on quality vehicles, and quality work. For the best performance automotive shop in Philadelphia, PA, call or stop by Harold's Used Auto Parts Inc today.