This EGR Cooler is a 100 new unit, not remanufactured. The cooler utilizes larger than OE diameter tubes with a thicker wall to reduce clogging, extend life and resist failure. The unit is TIG welded and pressure tested at the factory. Advanced FLOW engineering (aFe) is a manufacturer of automotive cold air intake systems, performance air filters, fluid filters, intake manifolds turbochargers, programmers, throttle body spacers and exhaust systems.