Remanufactured vs. Rebuilt

• A remanufactured engine is one that has been rebuilt and then sold to you by a manufacturing professional. This professional has taken an already used engine and replaced the parts that weren't working correctly. A rebuilt engine, on the other hand, is an engine you or your local mechanic has taken apart, cleaned up and put back together with new parts.
  
  

Warranty

• Remanufactured engines always come with a warranty from the company selling the engine. This will usually last anywhere from 90 days to one year. If you or your mechanic rebuilt the engine, the new parts that you put into the engine may be covered by a warranty, but the engine itself won't be.
  
  

Do I Need One?

• You may not need a remanufactured engine if yours is really old. On the other hand, you may want to buy one if your car seems to have a lot of engine trouble. A certified mechanic can tell you if you'll benefit from a remanufactured engine. However, ensure that everything else on your vehicle works well before buying one. You may not want to invest in a remanufactured engine if your car still won't run afterward.