Whether it’s due to damage, or simply old age, leaky trucks are a problem. At Harold's Used Auto Parts Inc in Philadelphia, we can fix that for you.

Water leaks are common and hazardous. Not only do they cause rust, rot, and mold damage to your trucks, they also put any cargo inside at risk. No customer wants their boxes and products to arrive water damaged - it not only makes your company look bad but can cost you a lot of money. 

The heads on your commercial or fleet diesel are one of the most integral parts of your engine. The heads are comprised of the valvetrain, exhaust ports, intake ports, and injector ports. In essence, a head’s purpose is to regulate and time the intake of fresh air, the release of exhaust, the compression of fuel and air that provides combustion, and the entry point for fuel into the cylinder. The head is where all the complex aspects of engine operation occur...without it, you just have a chunk of metal with pistons in it, and no way to make them move. Here’s what you need to know about your heads, from Harold's Used Auto Parts Inc in Philadelphia, PA.

When your commercial or fleet vehicles need maintenance or repair, we know it can be a hassle. We also know that you want it to stay fixed and stay on the road for as long as possible. At Harold's Used Auto Parts Inc, a huge aspect of our focus on quality is not only centered around the work we do but also the components we install.

If you’re reading this, there’s a good chance you own or operate a fleet or commercial truck. If you do, then you probably know the difference between a job done, a job done well, and a job done perfectly. At Harold's Used Auto Parts Inc in Philadelphia, PA, we strive for the latter.

Commercial trucks have heavy engines, and they spend a lot of time running, particularly at idle. As a result, the mounts that secure the engine to chassis of the truck have a tendency to wear out, causing all sorts of shaking and vibration that the driver will feel in the cab of the truck. At Harold's Used Auto Parts Inc in Philadelphia, we can take care of that for you.

At Harold's Used Auto Parts Inc in Philadelphia, PA, we understand that big trucks mean bigger risk on the road. Here are some tips to remember, to reduce the likelihood of an accident next time you’re on the job.

When you run a company that uses fleets, the safety of your fleet and drivers should always be one of your top concerns. There is always room for improvement when it comes to safety and reduces accidents.

At Harold's Used Auto Parts Inc in Philadelphia, we understand how important safety is in the world of truck driving. The stakes are higher in a big truck; potential for damage is obviously far greater, to you, your cargo, and other people on the road. Here are some easy tips that go a long way.

At Harold's Used Auto Parts Inc in Philadelphia, PA, we service all kinds of trucks, young and old. If you’re in the market for a new or new-to-you truck, here’s some advice we encourage you to consider.

There comes a time in the life of every fleet vehicle or commercial truck when you have to decide - is it time to retire that truck or van, or should you put the money into fixing it? At Harold's Used Auto Parts Inc in Philadelphia, PA, we’re here to help.

Your fleet or commercial vehicles most likely spend a lot of time idling. Whether it’s to keep warm or simply out of convenience, the stop and go lifespan of these vehicles mean idling is a part of their duties. But, is it bad for them? Harold's Used Auto Parts Inc in Philadelphia, PA has the information you need.

If you operate a fleet of vehicles, you’ve probably listened to a vehicle and thought “that doesn’t sound right” at least once or twice. Strange noises are an indicator that something isn’t working right, and typically means something is wearing out a lot faster than it should, or is about to fail. At Harold's Used Auto Parts Inc in Philadelphia, PA, we can tell a lot about the condition of a vehicle just by listening to it. Specific noises and where they come from are often all you need to diagnose an issue and the severity of the problem. Here are some signs to listen out for.

At Harold's Used Auto Parts Inc in Philadelphia, we’re not only here to fix your truck when something goes wrong...we’re here to help you understand your truck a little better, too. Here are some tips concerning your thermostat - how it works, what to watch out for, and what to do about it when one fails.

It’s easier than ever to keep your fleet running smoothly for thousands of miles. If a vehicle has less than 50,000 miles on it today, chances are it still has 75 percent of its driving life ahead of it. That’s good news if you’re a company managing a fleet of vehicles. It wasn’t that long ago that hitting the 100,000-mile mark on the odometer was a major milestone. Today, vehicles are built to last. With the proper maintenance and attention, there’s no reason you shouldn’t expect to see that 50,000-mile reading on the odometer one day roll right past 200,000 and keep ongoing. Here at Harold's Used Auto Parts Inc, we're going to give you some tips on how to make that happen!

Inspecting wear and tear items on any commercial truck is a great way to make sure you stay reliably on the road. With a trained eye, a variety of issues can easily be caught before trouble arises, saving you critical time and a lot of money in the process. At Harold's Used Auto Parts Inc in Philadelphia, one of our top priorities is preventative maintenance, and noticing a problem before it becomes a bigger one.

It’s no secret, commercial truck tires are expensive. The good news is, if one of your tires is experiencing issues, Harold's Used Auto Parts Inc in Philadelphia has you covered. We want to make sure your fleet stays fully operational and you on the road! Here are some things to keep your eye on when it comes to your tires and tips to keep your tires lasting.

Can you say for certain all the tires in your fleet, or on your commercial truck, are roadworthy and ready? Proper attention to tire condition is so important, but how do you properly care for your tires? From Harold's Used Auto Parts Inc in Philadelphia, PA, here’s what you need to know.

All trucks, from a Chevy S-10, to the largest, heavy-duty trucks on the road, are classified into categories. Trucks are categorized by weight into classifications 1-9, and each grade comes with its own set of regulations and license requirements. Here’s a quick guide, from Harold's Used Auto Parts Inc in Philadelphia.

At Harold's Used Auto Parts Inc in Philadelphia, reliable trucking is our main concern. From oil changes to engine rebuilds, our expert mechanics have the knowledge, equipment, and ability necessary to keep your rig on the road, and performing its best. We also believe that driver knowledge is key to achieving this goal; in pursuit of that, here’s some information on a simple but important part of your truck, the tie rod.

Gauges are your first, and often only, line of defense in catching a major problem before it’s too late. At Harold's Used Auto Parts Inc in Philadelphia, we know that sometimes a faulty gauge is overlooked when the truck is still running fine and there’s a busy day ahead. However, gauges are extremely important, and are typically easy to repair.