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ISZ425-40A Automotive Engine

DCEC L300-20 automotive engine is a 6-cylinders in line, 8.9 liter four-strokes engine with 114mm bore and 145mm stroke, equipped with Bosch P7100 pump and RQV-K governor. DCEC L300-20 automotive engine comes with turbocharger and Air-Air intercooler, with a EURO II post-processor.

The prime power at 2200RPM of DCEC L300-20 automotive engine is 300 HP.

As part of EMAC, DuraMac provides complete powertrain that integrated with DCEC engine, Fast-Eaton clutch, FAST-CAT transmission, Dongfeng-DANA axle and Komman air suspension, while the electrification of automobile is the certain future, Duramac also get involved with EV powertrain system.

We provide full life cycle services for all customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.

Advantages of DCEC ISZ425-40A Automotive Engine

  • Lower oil consumption,Extended stroke,the expansion of the combustion gas more fully, Increase effective efficiency output, the economy is better.

  • Strong power,advanced 4 air valves structure, greater horsepower, air burning more thoroughly, while making low speed torque increase, quicken response speedily, climb strongly.

  • Excellent reliability, with compulsive cold cut articulated pistons, Can bear extreme high mechanical load and heat load, Strength can be comparable with heavy engine.

  • Better emissions, Decorate injector and symmetrical combustion chamber in center, make the cylinder is more homogeneous mixture, burning more fully, lower emissions.

  • Super life, 30% engines 800,000 km without overhaul.

  • Excellence power, Clean burning, use the advanced lean-burn closed loop electronic control system.

  • Excellent cold start performance, equipped with air suction electric preheater and 7.8 kw power starter, completely improve the cold start performance of the engine. Through the arctic village-MoHe of China-36°C extreme low temperature validation.

Technical Specifications

Engine Model:ISZ425-40A
Engine Type:6
Displacement:13 L
Rated Speed:2100 RPM
Rated Power / Speed:317 kW @ 2100 RPM
Peak Torque:1966 N.m @ 1600 RPM
Fuel System:XPI Fuel System
Aspiration Method:Turbocharged & Air Intercooler
Emission Standard:N/A
Bore*Storke:130 mm * 163 mm
Packing Size(L*W*H):N/A
Wet Weight:1157 kg
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C

coming soon

Engine Model

Advertised Power

Peak Torque

Number Of Cylinders

 Fuel System

ISZ425-40A425 HP @ 2100 RPM1966 N.m @ 1600 RPM6 CylindersXPI Fuel System
ISZ425-40B425 HP @ 2100 RPM1966 N.m @ 1200 RPM 6 CylindersXPI Fuel System
ISZ425-41424 HP @ 2100 RPM2016 N.m @ 1000-1400 RPM 6 CylindersXPI Fuel System
ISZ450-40A456 HP @ 2100 RPM2237 N.m @ 1600 RPM 6 CylindersXPI Fuel System
ISZ450-40B450 HP @ 2100 RPM2237 N.m @ 1200 RPM6 CylindersXPI Fuel System
ISZ450-41450 HP @ 2100 RPM2338 N.m @ 1000-1300 RPM6 CylindersXPI Fuel System
ISZ460-51450 HP @ 2100 RPM2338 N.m @ 1000-1300 RPM6 CylindersXPI Fuel System
ISZ520-41450 HP @ 2100 RPM2338 N.m @ 1000-1300 RPM6 CylindersXPI Fuel System
ISZ525-40A525 HP @ 2100 RPM2509 N.m @ 1600 RPM6 CylindersXPI Fuel System
ISZ525-40B525 HP @ 2100 RPM2508 N.m @ 1200 RPM6 CylindersXPI Fuel System
ISZ525-40C525 HP @ 2100 RPM2508 N.m @ 1200 RPM6 CylindersXPI Fuel System

General Infomation of DCEC ISZ425-40A Automotive Engine

Engine ModelISZ425-40AAdvertised Power425 HP @ 2100 RPM
Peak Torque1966 N.m @ 1600 RPMCurve&DatasheetFR 20184
Fuel SystemXPI Fuel SystemNo. Of Cylinders6
AspirationTurbocharged & Air IntercoolerDisplacement13 L
Bore*Storke130 mm * 163 mmCPL Code Revision43090
Dry Weight 1120 kgWet Weight 1157 kg
Compression RatioN/A

Installation Data of DCEC ISZ425-40A Automotive Engine

Center of Gravity. Distance From Front Face of Block507 mm
Center of Gravity. Distance Above Crank Centerline(Above Crankshaft)199 mm
Maximum Bending Moment At Rear Face of Block1807 N.m
Maximum Crankshaft Thrust Bearing load limit- Intermittent load10668 N
Maximum Crankshaft Thrust Bearing load limit-Continuous load5334 N
Instantaneous Inertia At Rotating: (Without Flywheel) 1489 N
Emissions CertificationN/A
Idle Speed600-800 RPM
Maximum Non-Load Speed2300 RPM
Over Speed Performance (Within 15 Seconds)N/A
The Clutch Torque @ 800Rpm1153 N.m
Maximum Altitude At Which Continuous operation Is AllowedN/A
Supercharger outlet Exhaust Pressure limit Value N/A
Maximum Power of Exhaust BrakeN/A

Engine Performance Data Rated power of DCEC ISZ425-40A  Automotive Drive Engine

Governed Speed Peak Power Speed Peak Torque Speed
Engine Speed2100 RPM1600 RPM1200 RPM
Output Power317 kW325 kW247 kW
Torque1441 N.m1936 N.m1996 N.m
Turbocharger Compressor Outlet Pressure200 kPa207 kPa139 kPa
Intake Air Flow31.9 m3/min25.8 m3/min15.5 m3/min
Charge Air Flow36 kg/min30 kg/min18 kg/min
Exhaust Gas Flow(Turbo Out)979 liter/sec895 liter/sec675 liter/sec
Fuel Consumption68 kg/hr64.6 kg/hr49 kg/hr
Turbocharger Compressor Outlet Temperature171 173 144
Heat Rejection To Coolant(Engine Circuit)413 453 547
Turbo Comp Outlet Temperature117 kW115 kW98 kW
Radiator Coolant Flow510 liter/min389 liter/min291 liter/min
Brake Mean Effective Pressure(BMEP)1394 kPa1876 kPa1904 kPa


System Technical Data of DCEC ISZ425-40A Automotive Drive Engine

Air Intake SystemMaximum Temperature Rise Between Ambient Air And Engine Air Inlet11
Maximum Intake Restriction With Dry Type Air Cleaner,With Clean Filter-Medium Duty6.5 kPa
Maximum Intake Restriction With Dry Type Air Cleaner,With Clean Filter-Heavy Duty2.6 kPa
Maximum Intake Restriction With Dirty FilterN/A
Turbocharged&IntercooledMaximum Intake Temperature Rise Between The Environment And The Intake ManifoldN/A
Maximum Allowable Pressure Difference Before And After Intercooling-Three-LevelN/A
Minimum Inlet Pipe Diameter Allowed-Three-LevelN/A
Exhaust SystemMaximum exhaust back pressure(kPa) 13.5 kPa
Maximum allowable static bending moment at turbocharger exhaust outlet flange(N.m)27.2 N.m
Maximum Static Bend Allowed For Turbocharger Exhaust FlangeN/A
Lubrication SystemOil Pressure @ idle – ( Minimum) (kPa)83 kPa
Total System Capacity (litre)45 L
Maximum Lube Oil Flow to all Accessories ( liter/min)8 l/min
Maximum Oil Pressure Spike on a Cold Engine (kPa)1034 kPa
Typical Oil Pressure Range on a warm engine (kPa)207-276 kPa
Cooling SystemCoolant Capacity – Engine only23 L
Standard Thermostat (Modulating) Range82-94
Minimum Fill Rate ( Without Low Level Alarm)19 l/min
Minimum Coolant Expansion Space – % of System Capacity6%
Water Tank Capacity Without Water ExpansionN/A
Maximum Coolant Pressure (Without Pressure Cap, Thermostat Closed)5 L
Maximum Degassing Time25 mins
Maximum Coolant Flow To AccessoriesN/A
Maximum Coolant Temperature Engine out107
Minimum Allows Pressure of Pressure Cap50 kPa
Minimum Recommended Coolant Temperature70
Common Operating Temperature Range of Fans With Fan Clutch95
Maximum Coolent Temperature For Engine Protection Control100
The Limit Environmental Temperature At Rated SpeedN/A
The Limit Environmental Temperature At Peak TorqueN/A
24V Electrical SystemMaximum Allowable Resistance of Cranking Circuit0.002
The Cold Start Current When Engine And The Clutch Separate750 CCA
Cold Starting SystemMaximum Unaided Cold Start TemperatureN/A
Maximum Aided Cold Start TemperatureN/A
Fuel SystemMaximum Fuel Return Resistance33.9kPa
Maximum Inlet Resistance of oil Pump With Clean Filter6.8 kPa
Minimum Discharge Capacity Of Mailbox2 m3 /hr
Maximum design fuel flow (kg/hr)261 kg/hr

Scopes of Supply of DCEC ISZ425-40A Automotive Engine

Air Intake System1. Air Intake ManifoldExhuast System1. Exhuast Manifold
2. Water-air Intercooler2. Turbocharger
3. N/A3. Exhuast Elbow
Fuel System1. Fuel transfer pumpStarting System1. Starter motor
2. High-pressure fuel pump2. Starter rely
3. Fuel Filter3. N/A
Charging System1. Charging alternatorEngine Shut-Down System1. Engine fuel shut-off solenoid
Lubricating System1. Oil pumpCooling System1. Water pump
2. Oil filter2. Engine Fan
3. N/A3. Standard radiator
Power Output System1. FlywheelEngine Mounting System1. Engine Mouting Bracket
2. Standard flywheel housing2. N/A
Engine Auiliary Accessories1. Air compressor
2. Power steering pump

Optional Accessories of DCEC ISZ425-40A Automotive Engine

Air Intake System1. Air Intake pre-heaterExhuast System1. Muffler & bellows
2. Air intake shut-off valve2. Flame trap
3. Air filter3. Spark arrestor type Muffler & bellows
4. Air intake pre-filter4. DPF system
5. Air filter alarm system5. N/A
Fuel System1. Coarse FilterStarting System1.Manual Magnetic DC Contactor
2. Fuel pre-heater2. Dual ears flywheel housing
3. N/A3. Spring Starter Motor
4. N/A4. Air Starter Motor
5. N/A5. Hydraulic Starter Motor
Lubricating System1. Oil pre-heater.Cooling System1. Silent Type Radiator
2. N/A2. Plateau Radiator
3. N/A3. Salt-Spray Resistant Radiator
4. N/A4. Coolant pre-heater
Power Output System1. ClutchEngine Mounting System1. Shock absorber pad
Engine Auiliary Accessories1. Hydraulic oil pumpControl System1. Can add mechanical accelerator pedal
2. Air conditioner compressor2. N/A
3. N/A3. N/A

As part of EMAC, DuraMac is Committed to providing reliable powertrain system to commercial vehicle manufacturers around the world, a sub-brand of EMAC group that focusing on automotive application. Based on dozens of world-class engine manufacturing resources in China, and as official exporting agent of Fast tranmission (Joint venture with Caterpillar AT tranmission), Dongfeng Dana axle and Komman air suspension, DuraMac provides one-stop solutions covers from pre-design to components supply, from installation to commissioning, from pre-sales communication to after-sales service support. For more information of our automotive power system products, you are welcome to visit DuraMac homepage:

Modifiable Components of DCEC ISZ425-40AAutomotive Engine

Air Intake System1. Installation position of air filterExhuast System1. Can modify installation position and direction of
2. Upgrade to  heavy-duty type air fitlerturbocharger
3. N/A2. Water-cooled exhuast manifold
4. N/A3. Water-cooled turbocharger
Fuel System1. Upgrade to fuel fitler that integrated with fuel transferStarting System1. 12V starter motor for 12v electric system
pump and fuel pre-hearter2. Upgrading to specified brand and speicifications of
2. N/Astarter motor
Charging System1. 12V charging alternator for 12v electric systemEngine Shut-Down System1. 12V solenoid for 12v electric system
2. Explosion-proof charging alternator2. Explosion-proof solenoid
3. Upgrading to specified brand and speicifications of3. N/A
charging alternator4. N/A
Lubricating System1. Oil Pan positionCooling System1. Can modify engine fan into blower fan or suction fan
2. Number of dipstick2. Can modify central position of engine cooling fan
3. Position of dipstick can choose from 6 positions3. Can choose type of engine fan from mechanical type or
4. Can modify oil filter to be remote installationelectric type
Power Output System1. Can modify size of flywheel housing and flywheel.Engine Mounting System1. Can modify engine mouting bracket.
2. Dual-ear flywheel housing (For twin-starter system)2. N/A
3. Some of models can modify flywheel housing into PTO3. N/A
integrated type.4. N/A
4. Engine have connecting port of PTOs, that able to5. N/A
provide power output.6. N/A
Engine Auiliary Accessories1. All of auxiliary system can choose specified brands and
2. Additional auxiliary systems can be added for special

Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.

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