About Remanufacturing

About Re-Manufactured Engines and Transmissions

A question we get a lot is what’s the difference between remanufactured engines (or transmissions) and rebuilt or used engines (or transmissions). Many people confuse rebuilt products with remanufactured (reman) products, and some may even assume that a used product will be a viable replacement alternative to their failed engine, transmission, differential or other component.

With JASPER reman components, you get tolerances that meet or exceed those of the OEM (original equipment manufacturer) and a nationwide warranty that, in many cases, is better than a new component warranty. Completely remanufactured… for a lot less than you might think.

But, whatever term you use for that component you’re having installed in your car, truck, SUV or boat, you should make sure that you’re getting exactly what you think you’re getting. Here’s how we differentiate used, rebuilt and remanufactured:


A Used/Junk Engine

Used components are pulled directly from a vehicle – typically a junkyard vehicle – and generally not even so much as surface cleaned. They are then sent to the repair facility or picked up by the shop. There are no provisions for disassembly, internal cleaning or inspection with a used component. Used or junkyard components may have high mileage and a poor maintenance history – a failure waiting to happen. Many used or junkyard components come from a vehicle that was involved in an accident and may have unseen damage. A lot of times these engines need to be rebuilt, repair, or even sent to a machine shop. These engines typically have either a 90 day warranty or no warranty and come with a lot of extra headaches. Buying a used engine is always a gamble. Your engine was a used engine before it broke down too. It is only a matter of itme.


To rebuild is to recondition by cleaning, inspecting and replacing severely worn or broken parts. Serviceable parts are reused within the manufacturer’s acceptable wear limits. The quality of rebuilt components varies widely and many come with only a limited warranty. These engines are typically built in local repair/machine shops and as mentioned previously come with a local/limited warranty.


A Remanufactured Engine

To remanufacture is to make as close to new as possible. Most wearable parts are automatically replaced. All core material is closely inspected and checked against original equipment specifications for correct dimensional tolerances. Replacement parts are new or requalified. If new, parts are made in the same production processes as original equipment. Testing is performed to manufacturer specifications and original production standards. Remanufactured products are the safest bet when you are re-powering your vehicle. These products have been thoroughly inspected and tested before they come to you and they come with a warranty.

Choose for yourself, but know that JASPER will only provide completely remanufactured engines, transmissions, differentials and drivetrain products — or any of our other remanufactured components — with a nationwide warranty. You can drive away from your technician’s shop with confidence if you have a JASPER reman component.