APX is the nations leading provider of used engines, rebuilt engines, remanufactured engines, low-mileage engines, Diesel Engines, long blocks, drive trains, remanufactured transmissions, Remanufactured Cummins,rebuilt transmissions, used transmissions, short blocks, and much more!

Tested & Certified Low Mileage Quality Used Engines

Saving money in today’s world, has become essential. With APX you can save hundreds and possibly thousands of dollars by getting a Quality tested used Engine or Transmission to repair your car or truck. With APX you will have peace of mind knowing your Engine or Transmission has been run tested, cleaned, and certified. The best part about purchasing a used Engine or Transmission is that they’re always Original Equipment Manufacturer replacement parts and are 100% Guaranteed!



People are always very cautious about buying used replacement Engines and Transmissions. APX has spent years building the right relationship with the best suppliers to make sure APX customers are always 100% satisfied. Who you decide to trust with your part needs is important, especially when buying a used part. APX parts always come with a money back guarantee, and are guaranteed to be correct as ordered, which means you will get exactly what you’ve paid for.


By Using state of the art equipment these parts are brought back to factory specifications that meet or exceed Original Equipment Standards.

All core material is closely inspected and checked for correct dimensional tolerances. Replacement parts are new or remanufactured.

Once the process is complete, it will be just like you Bought your car yesterday with 0 miles on it!

Do your research, but only APX will provide completely Remanufactured Engines, Transmissions, and Drivetrain products, and back it up with an industry leading 5 Year nationwide parts and labor warranty.

You can drive away happy and confident knowing that APX is on your side.


Engine Remanufacturing Process


The Difference Between a New Engine vs New Remanufactured Engine

Let’s start with the difference between a new engine and a new remanufactured engine. Basically a new remanufactured engine and a new engine is exactly the same thing except the new remanufactured engine is much better. The basic reason why the word remanufactured came into existence is because years ago manufacturers used to call them new but their claim to new was challenged by some astute lawyers who claimed that you could not call them “new” because the engine was not the same as it was when it first came with the vehicle. Meaning that the minute any update was done to the engine and it changed from the way it was originally manufactured you had to call it remanufactured. There are some companies that like to say that they are selling new engines but in reality they are selling remanufactured engines. Again, because updates have been done you MUST call them remanufactured and not new.

New Remanufactured Engine

Getting a new remanufactured engine is actually better than getting a “new” engine for many reasons. Let’s take an example of a 2002 Chevy Pickup with a 5.7L engine in it. Do you really want an engine that was “new” back in 2002 and has been sitting on the shelf for 10 years not being run, tested, oiled, maintained, and has not had any updates to it since its original production? The answer is clearly NO. New remanufactured engines come with all new and updated internal parts that are either replaced or inspected. A new remanufactured engine has many new parts inside of it. A partial list of new items in a new remanufactured engine may include: pistons, rings, oil pump, valves, bushings, valve guides, cam bearings, lifters, valve seals, rear main seal, rod bearings, main bearings, timing chain, timing gear, push rods, soft plugs, new or remanufactured cylinder head, new or remanufactured crank shaft, new or remanufactured camshaft, etc. Not only is it important that all the internal parts of a new remanufactured engine have been replaced but the fact that every single update has been done at the time of manufacturing which makes a new remanufactured engine a far superior product than a “new” engine.

The Difference Between a Rebuilt Engine and a Remanufactured Engine

This is probably the most confused term that is used in the engine replacement market today. A rebuilt engine is NOT the same as a new remanufactured engine. We have already shown that a new remanufactured engine is actually better than a new engine. A rebuilt engine is significantly different than a new remanufactured engine. A rebuilt engine is an engine that is just fixed, some parts replaced, and shipped to you with a limited and fine print warranty. What exactly does this mean?

Cheap Rebuilt Engines

An example of this would be if the engine failed due to the main bearings going bad, then a rebuilt engine will have the lower end parts that failed replaced. The upper part of the engine with the old parts would not be replaced; they would just be cleaned up. An example would be leaving the old cam, cam bearings, valves, springs, etc. still in the engine and not being replaced while the lower end got new bearings.

The advantage of a rebuilt engine would appear to be the lower price. The problem with this is that the quality of the engine along with the longevity of it is drastically reduced. Most rebuilt engines typically last maybe one year or less and the warranty has to be looked at very closely to find out what loopholes’ there may be. If you want to replace the engine of your vehicle so you can turn around and get rid of it, then a rebuilt might be an okay option. If you are looking for reliability, high quality, a true warranty, hassle free operation, and longevity then a new remanufactured engine from is going to be your best option.

  • Our professionally trained and ASE certified technicians completely remanufacture each Engine back to original equipment specifications plus all new updates!
  • Engine pressure is tested after assembly to assure water jacket integrity
  • Spin tested after assembly to assure compression, oil flow, oil pressure, and real main seal
  • Cranks turned on state of the art equipment and micro-polished to OE “roughness” spec
  • New pistons, rings, bearings, gaskets, timing chain or belt, valves, valve springs, and freeze plugs are added
  • Heads resurfaced, valve seats re-cut, vacuum tested after assembly, and pressure tested as an individual casting
  • Blocks bored, align honed, and cylinder honed with computerized equipment for perfect finish size and taper
  • Most Engines are shipped as “long block” assemblies and include a new water pump and gasket set.
Ask about Cummins Powerstroke Remanufacturing solutions

Speak with an Engine Specialist Monday – Friday 9:00am – 6:00pm Eastern 1-800-439-4083

Request a quote