EnginesВ-2ИСВ-2ИСВ-2ИСLayoutVCoolingLiquidFuelDieselDisplacement38.88 LRatingsRegimePowerMax520 hpVehicles 10193119321933193419351936193719381939194019411942194319441945IS-1 (D-5T)107Feb 1944 – Oct 1944IS-2Mar 1944 – May 1945IS-2 Model 1943IS-32,315ISU-122 (cast nose)ISU-122 (welded nose)ISU-122S (cast nose)ISU-122S (welded nose)ISU-152 (cast nose)ISU-152 (welded nose)