The process of remanufacturing an engine, major assembly or components is that of returning the used product to its original state in accordance with the manufacturers’ specifications. Whereas re-use (repair) has limits in terms of life cycle, remanufacturing provides the product with a new life cycle with regard to performance, reliability and longevity.
Compared to recycling, which involves destroying the product to recover the materials for use in different products, remanufacturing tries to maintain the integrity of the product. Consequently, a large fraction of the input materials and energy is recovered.
In termes of waste management, remanufacturing is at the top of the waste hierarchy, as its processes not only give a second life to existing products but also save a very high amount of CO2 emissions which would have been necessary if the original product would have needed to be replaced with a totally new one.