When any part fails on your car, you have either of the five options to replace it with:A new partA rebuilt partA remanufactured partAn aftermarket partA used partIn the case of buying a costly part, like an entire engine, some people would say that there is a sixth option too: Selling the car to a Milwaukee junkyard for scrap metal.
Here, I am assuming that you are going to keep the car.
These parts usually have a good warranty compared to rebuilt parts because they often involve extensive work to bring them again to OEM tolerances.
Most auto supply stores offer remanufactured parts.
Auto dealerships will utilize them when new parts are not available.
These parts are usually replaced during routine maintenance.If you own a less popular vintage car or an older model whose parts are difficult to buy for, then you can purchase reconditioned parts.