This is a BRAND NEW GENUINE BORGWARNER TURBOCHARGER. This is an exact, direct fit replacement turbo. OE Number: R23515635, R23515636, R23516431, 23515635, 23515636, 23516431, 2585837C91. Description: Navistar/Int Harvester, Truck, Industrial Engine, DDC Truck. Applications: 2000-08 DDC-MTU Truck with Series 60 Engine. Turbo Model: S400S061, TMF55. Displacement: 12.7L, 12700 ccm. Turbine Wheel: 171689 Ind. 95.7 mm, Exd. Wheel (Hipped): 171691 Ind. 74.57 mm, Exd. 105.3 Trm 53, mm, 7+7 Blades, Billet. Heat shield Number: 167789. Repair Kit: 176391 (318397)(1253400750). Replaces the following part numbers.