When faced with an engine failure, the initial problem to solve is how to repair it. This translates into the choices of; in-house or external repair. With current labor rates as they are, most operators cannot afford to rebuild an engine themselves. Parts acquisition, shop space, technical knowledge, tooling and the fact that in-house rebuilds do not carry a warranty all act to sway the operator to external sources for assistance. An additional, but equal, concern is how much will the engine cost to repair. The body of this paper will discuss the technology involved in producing remanufactured engines. Topics covered are cost analysis, remanufacture specifications and process and fleet operational logistics using remanufactured engines.