The MTU 20V4000M73L is a turbocharged engine rated at 1970 rpm. It powers generator sets from MTU, including the 20V4000-M73L.
Also known as: MTU 20V4000M73L
Part of the MTU 20V4000 engine family — 59 variants share parts & fitment.
| Aspiration | turbocharged |
|---|---|
| Rated speed | 1970 rpm |
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Fuel consumption tolerance | +5 | % | per ISO 3046 |
| Other | Power reduction at 45°C / 32°C | 3 | % | reference/power definition per ISO 3046 |
| Pressure | Barometric pressure (reference condition) | 1000 | mbar | reference conditions |
| Pressure | Exhaust back pressure (reference condition) | 30 | mbar | reference conditions |
| Pressure | Intake air depression (reference condition) | 15 | mbar | reference conditions |
| Temperature | Intake air temperature (reference condition) | 25 | °C | reference conditions |
| Temperature | Sea water temperature (reference condition) | 25 | °C | reference conditions |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Fuel | Diesel fuel to DIN EN 590 | DIN EN 590 | min L.H.V. of 42800 kJ/kg (18390 BTU/lb) |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Part # | Description | Category |
|---|---|---|
| 07500159b | Adapter, Injector | adapter |
| 2020161 | Air filter | air_filter |
| W1003 | Replace air filter (→Page 6 – 36) | air_filter |
| W1005 | Air filters | air_filter |
| WM00076 | Air filter element | air_filter |
| 21300116a | Drive belt condition check | belt |
| 21300167a | Battery-charging generator drive — Drive belt tension adjustment | belt |
| 21300167b | Battery-charging generator drive — Drive belt replacement | belt |
| F6557991 | Puller bracket | bracket |
| W1009 | Centrifugal oil filter (if fitted) | centrifugal_oil_filter |
| 30380 | Cleaner (Hakupur 312) | cleaner |
| W1011 | Combustion chambers | combustion_chambers |
| W2004 | Fit new high-pressure sensor in fuel system. | component_maintenance |
| W2006 | Check engine coolant thermostat and fit new thermal actuator. | component_maintenance |
| W2007 | Check charge-air coolant thermostat and fit new thermal actuator. | component_maintenance |
| W2009 | Inspect centrifugal oil filter for wear (if fitted). | component_maintenance |
| W2010 | Overhaul starter. | component_maintenance |
| W2062 | Fit new sealing materials for all components disassembled. | component_maintenance |
| 07500160a1 | Cable connector, Injector | connector |
| 20300173a | Coolant filter | coolant_filter |
| W1055 | Overhaul cylinder heads, visually inspect piston crowns and running pattern of cylinder liners (→Workshop Manual) | cylinder_head |
| W1063 | Overhaul cylinder heads. Visually inspect piston crowns and wear pattern on cylinder liner running surfaces. | cylinder_heads |
| W1038 | Overhaul exhaust turbocharger (→Workshop Manual) | exhaust_turbocharger |
| W3000 | Completely disassemble the engine. Inspect engine components as per Maintenance Manual instructions and repair or fit new components as required. | extended_component_maintenance |
| 07500211a | Screw, Adapter (3) | fastener |
| 08300126a | Easy-change filter | filter |
| 40477 | Assembly paste (Optimoly Paste White T) | fluid |
| X00029933 | Grease (Kluthe Hakuform 30-10/Emulgier) | fluid |
| W1051 | Overhaul fuel delivery pump (→Workshop Manual) | fuel_delivery_pump |
| W1001 | Fuel filter or new fuel filter insert | fuel_filter |
| WM00086 | Easy-change fuel filter | fuel_filter |
| W1006 | Fuel injectors | fuel_injectors |
| 01200210a | Gasket | gasket |
| 04000047a | Sealing ring, Injector | gasket |
| 07500220a | O-rings (2) and damping ring (3), Injector | gasket |
| 08300029b | Gasket | gasket |
| F30027340 | Ratchet adapter | hand_tool |
| 20200220a | Disconnect pump and hose. | hose |
| 07600211a | Injector | injector |
| 507015174 | Injectors Y39.1 to Y39.8, engine side A (underneath the cylinder head covers of the cylinders) | injector |
| F30378403 | Injector installation jig | jig |
| F6555197 | Lever for force-in lever | lever |
| F6557952 | Force-in lever for injector installation | lever |
| W1008 | Engine oil filter | oil_filter |
| WM00067 | Oil filter element | oil_filter |
| 0.04 | PM | other_service |
| 0.37 | CO | other_service |
| 0135315483 | Connector pliers | other_service |
| 1020FDL1106 | Generator Model | other_service |
| 1020FDM1182 | Generator Model | other_service |
| 1020FDS1124 | Generator Model | other_service |
| 1030FDH1252 | Generator Model | other_service |
| 1030FDH1254 | Generator Model | other_service |
| 1030FDL1110 | Generator Model | other_service |
| 10311583 | Colt Hayes | other_service |
| 20300174a | Sealing ring | other_service |
| 217.3 | Heat Radiated to Ambient | other_service |
| 28149 | Dry Weight | other_service |
| 5.95 | NOx + NMHC | other_service |
| 60.6 | Fan Power | other_service |
| 95.4 | Displacement | other_service |
| 97.5 | Sound Level | other_service |
| A001061/ | MTU Fluids and Lubricants Specification | other_service |
| F30047446 | Torque wrench, 60-320 Nm | other_service |
| F30510423 | Torque wrench, 10-60 Nm | other_service |
| F6555766 | Barring tool | other_service |
| M015565/01E | Air Filter | other_service |
| M015565/02E | Cooling system (LT circuit) | other_service |
| M015715/00E | other_service | |
| MTU-015715/00E | Special tools | other_service |
| MTU-06-08 | Safety instructions | other_service |
| F30377769 | Puller for injector removal | puller |
| 20300176a | Charge-air coolant pump — Relief bore check | pump |
| 50701513a | Temperature sensors for single exhaust gas B4.1 to B4.8 (engine side A) | sensor |
| 507015144 | Temperature sensors for single exhaust gas B4.11 to B4.18 (engine side B) | sensor |
| F30027336 | Torque wrench 6-50 Nm | special_tools |
| F6789889 | Installation/removal tool for injector | special_tools |
| W2005 | Check engine coolant thermostat and replace thermal actuator (→Workshop Manual) | thermostat |
| 0015384230 | Torque wrench, 0.5-5 Nm | tool |
| F30452578 | Slotted nut driver, 0.5-5 Nm | tool |
| F30452739 | Milling cutter | tool |
| W1002 | Check valve clearance (→Page 6 – 10) | valve_gear |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
The MTU 20V4000M73L powers 1 generator set(s), including MTU 20V4000-M73L.