JASPER has been remanufacturing quality products since 1942 and today we are the nation's largest remanufacturer of gas and diesel engines, transmissions, differentials, rear axle assemblies, air & fuel components, marine engines, sterndrives, performance engines, and electric motors. Concentrated mental and visual attention in laying out or otherwise performing complex work to very close limits of high accuracy and quality; or in coordinating a high degree of manual dexterity with close visual attention for sustained periods.