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DCEC ISZ 425 40 Automotive Engine

DCEC ISZ 425 40 automotive engine is a 4-cylinders in line, 4 liter four-strokes engine with 114mm bore and 145mm stroke, equipped with Bosch vp44 and RQV-K governor. DCEC ISZ 425 40 automotive engine comes with turbocharged and charge air cooled, with a EURO III post-processor.

The prime power at 2100RPM of DCEC ISZ 425 40 automotive engine is 425HP.

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 ISZ 425 40 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:ISZ 425 40
Engine Type:6
Displacement:13 L
Rated Speed:2100 RPM
Rated Power / Speed:425 hp (317 kW) @ 2100 RPM
Peak Torque:1450 lb-ft (1966 Nm) @ 1200 RPM
Fuel System:XPI
Aspiration Method:Turbocharged and Charge Air Cooled
Emission Standard:N/A
Bore*Storke:114 mm * 145 mm
Packing Size(L*W*H):N/A
Wet Weight:680 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 40425 hp (317 kW) @ 2100 RPM1450 lb-ft (1966 Nm) @ 1200 RPM6 CylindersXPI
ISZ425 41312 kW (425 Ps) @1900 r/min2016 Nm @ 1000 r/min~1400 r/min6 CylindersXPI
ISZ450 40450 hp (335 kW) @ 2100 RPM1650 lb-ft (2237 Nm) @ 1200 RPM6 CylindersXPI
ISZ480 40358 kW (480 bhp) @2100 r/min2321 Nm @ 1000 r/min~1500 r/min6 CylindersXPI
ISZ480 41353 kW (480 Ps) @1900 r/min2321 Nm @ 1100 r/min~1300 r/min6 CylindersXPI
ISZ520 40388 kW (520 bhp) @2100 r/min2508 Nm @1200 r/min~1500 r/min6 CylindersXPI
ISZ520 41382 kW (520 Ps) @1900 r/min2458 Nm @1100 r/min~1300 r/min6 CylindersXPI
ISZ 525 40525 hp (392 kW) @ 2100 RPM1850 lb-ft (2508 Nm) @ 1200 RPM6 CylindersXPI

General Infomation of DCEC ISZ 425 40 Automotive Engine

Engine ModelISZ 425 40Advertised Power425 hp (317 kW) @ 2100 RPM
Peak Torque1450 lb-ft (1966 Nm) @ 1200 RPMCurve NumberFR20239
Fuel SystemXPINo. Of Cylinders6
AspirationTurbocharged and Charge Air CooledDisplacement13 L
Bore*Storke130 mm * 163 mmCPL Code Revision43354
Compression Ratio16.7:1Emission CertificationN/A
App typesN/A Emission StandardEuro 4

Installation Data of DCEC ISZ 425 40 Automotive Engine

Maximum low idle speed800  RPM
Minimum low idle speed600  RPM
Nominal no load governed speed2300 RPM
Maximum overspeed capability2625 RPM
Torque available at clutch engagement1152 N-m

Engine Performance Data Rated power of ISZ 425 40  Automotive Drive Engine

ParameterGoverned SpeecChecking pointMaximum torque point
Engine Speed2100 RPM1600 RPM1200 RPM
Output PowerTorque425 hp317 Kw435 hp324 KW331 hp247 KW
Torque     1063 lb-ft1441 N-m1428 lb-ft1936 N-m1450 lb-t1966 N-m
Inlet Air Flow1129 ft3/min533 L’s948 ft3/min447 LIs576 ft3/min272 LIs
Charge Air Flow81 lb/min36.7kg’min69 lb/min31 kg’min42lbmin19 kg/min
Exhaust Gas Flow2246 ft3/min1060 Ls2084 ft3/min984 Ls1506 ft3/min711 L/s
Exhaust Gas Temperature746 deg F397 deg C815 degF435 deg C939 deg F504 deg C
Heat Rejection to Coolant8016 BTUlmin141 kW7304 BTU/min128 kW6200 BTUWmin109 kW
Radiator Coolant Flow 135 gpm8.5 Ls103 gom6.5 L’s77 gpm4.9 Us
Turbo Comp. Outlet Pressure56 in-Hg189 kPa61 in-Hg206 kPa43 in-Hg145 kPa
Turbo Comp. Outlet Temperature326 deg F163 deg C338 deg F170 deg C290 deg F143 deg C
Fuel Consumption152 lb/hr68.9 kghr144 b/hr65.3kowhr107 lbihr48.5 kglhr
Brake Mean Effective Pressure202 psi1393 kPa272 psi1875 kPa276 psi1903 kPa

DCEC ISZ 425 40 Automotive Engine DATASHEET

System Technical Data of DCEC ISZ 425 40 Automotive Drive Engine

Air Intake SystemAllowable maximum intake air temperature rise11.1
Exhaust SystemMaximum back pressure imposed by complete exhaust system16 kPa
Cooling SystemMaximum coolant temperature – engine out102 deg C
Maximum charge air cooler outlet temperature (pumping mode)N/A deg C
Maximum coolant temperature – engine out (pumping modeN/A deg C
Maximum coolant pressure (exclusive of pressure cap)407 kPa
Minimum cooling capability @ nominal fuel rate [Level II] with 15 mile/hr (24 km/hr) ram
air speed and 50/50 E.G. coolant
Engine out coolant to ambient @ 1,600 RPM60.6 delta deg C
Engine out coolant to ambient @ 1,200 RPM65.6 delta deg C
Charge air cooler to ambient @ 1,600 RPM21.1 delta deg C
Maximum allowable pressure drop across charge air cooler and OEM CAC piping(CACDP) 10.1 kPa
Maximum coolant temperature for engine protection controls107 deg C
Fuel SystemFuel compatibilityN/A
Fuel componentsN/A

Scopes of Supply of DCEC ISZ 425 40 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 Puel 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 ISZ 425 40 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 ISZ 425 40 Automotive 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.

The picture of Sale Manual showing the accessories and scopes of supply.

Engine Sale Manual

The picture of Installation Drawing showing the accessories and scopes of supply.

Installation Drawing

The picture of Installation Manual showing the accessories and scopes of supply.

Installation Manual

The picture of Operation Manual showing the accessories and scopes of supply.

Operation Manual

The picture of Engine Parts Catalogue showing the accessories and scopes of supply.

Parts Catalogue

The picture of Test Report and Certifcate showing the accessories and scopes of supply.

Report & Certifcate

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