B3.9, B4.5, and B5.9 Industria [...] Engine Identification Section E - Engine and System Identification Page E-5 The model name for engines in industrial applications provides the data shown below For example: 4BTAA-3.9 4 = Number of cylinders B = Engine series T = Turbocharged AA = Charge air cooled 3.9 = Displacement in liters. NOTE: The suffix RGT refers to “Rear Gear Train” engines. Fuel Injection Pump Dataplate Bosch® Rotary The injection pump dataplate for the Bosch® VE pump is located on the side of the injection pump. The dataplate provides information for fuel pump calibration.