Injectors are the highest-value, most serial-sensitive parts on an MTU engine, and the part number alone does not tell the whole story. The same physical injector can appear under several numbers: a new-unit number, an exchange (remanufactured) number with an X, XP, or EX prefix, and a core number for the unit you send back. Two suppliers quoting "the same injector" can be quoting different things — one a new unit, one an exchange unit, one a third-party reman.
This guide explains how to read what is on your injector, what the prefixes mean, and what information we need to confirm the correct number and supply condition for your engine. The parts table below shows catalogued injector and fuel-system records across the Series 2000 and 4000 families we supply; your specific number is confirmed against the engine serial number before quoting.
What to collect before requesting an injector quote
- The complete number stamped or labelled on the injector — including any X, XP, or EX prefix
- Engine model and serial number — injector numbers are serial-range dependent
- Whether the unit must be new, genuine exchange (reman), or whether aftermarket is acceptable
- Quantity per cylinder position, and whether all positions are being replaced together
- Application and duty (propulsion, genset, rail) — affects the required condition and test evidence
- Whether you can return the old units (core return) — this changes both price and lead time
- Destination and required-by date for downtime planning
When a customer sends a number with an EX prefix, we quote the genuine exchange route and state the core terms explicitly. When the requirement is a new unit, we quote new. If your end user accepts aftermarket injectors, say so in the inquiry — it is a different tier and we will quote it separately rather than mixing it into the genuine line.
Parts We Supply for This Series
The groups below are generated from catalog records listed under this engine series (332 part numbers). Open any number for fitment, weight, HS code, and interchange details, or browse the full MTU Injectors Catalog.
Gaskets and seals (88)
| 0000160119 | Sealing Ring |
| 0000180680 | Gasket |
| 0219976547 | Crankshaft Front Seal Ring |
| 0219976647 | Crankshaft Rear Seal Ring |
| 0249975047 | Shaft Seal Ring |
| 0299976748 | O-Ring |
| 05122439 | Seal |
| 05132155 | Sealing Ring |
| 23524783 | Seal |
| 23540304/A1 | Gasket Kit |
| 4421870180 | Gasket |
| 4571410080 | Gasket |
Engine components (48)
| 0000530926 | Valve Keeper Wedge |
| 0001424957 | Exhaust Manifold Ring |
| 0001427157 | Lamellar Ring |
| 0001800015 | Pressure Reducing Valve Assembly |
| 000908030002 | Thread Plug |
| 0049976736 | Drain Valve |
| 0090374419 | Keystone Compression Ring |
| 50773 | Silicone Rubber (Loctite) |
| 5260160153 | Sleeve |
| 5260200305 | Housing and Rotating Assembly |
| 5272010153 | Spacer Sleeve |
| 5314770056 | Plug |
Sensors and electrical (34)
| 0005355103 | Level Monitor |
| 0005355303 | Level Monitor |
| 0005356430 | Temperature Sensor |
| 0005357333 | Speed Sensor |
| 0005357633 | Speed Sensor |
| 0005357833 | Speed Sensor |
| 0005357933 | Speed Sensor |
| 0005358033 | Speed Sensor |
| 0005358133 | Speed Sensor |
| 0005358233 | Speed Sensor |
| 0005358333 | Speed Sensor |
| 0035351731 | Pressure Sensor |
Drive components (31)
| 000125013012 | Washer |
| 000912010014 | Hex Socket Head Bolt |
| 0009953502 | Clamp |
| 05144768 | Clamp |
| 11506101 | Nut |
| 5090200071 | Magnetic Nut |
| 5090250141 | Retaining Ring |
| 5110251976 | Washer |
| 5240380471 | Conrod Bolt |
| 5240550550 | Bushing |
| 5249900605 | Hex Cap Bolt |
| 5249900705 | Hex Flange Bolt |
Pistons and liners (23)
| 0090375019 | Taper Face Compression Ring |
| 0120373618 | Oil Control Ring |
| 234110196000 | Piston Compression Ring |
| 5090850060 | Piston Ring |
| 5110850960 | Piston Ring |
| 5240114210 | Cylinder Liner Size 0 |
| 5240382550 | Conrod Bushing Size 0 |
| 5240384110 | Conrod Bearing Upper Half |
| 5240384210 | Conrod Bearing Size 0-1 |
| 5320110110 | Cylinder Liner |
| 5410370220 | Piston Pin |
| 5410380250 | Conrod Bushing |
Filters (22)
| 0000943268 | Air Filter Restriction Indicator |
| 0020921901 | Spin-On Fuel Filter |
| 0020922801 | Spin-On Fuel Filter |
| 0031845201 | Spin-On Oil Filter |
| 0031845301 | Spin-On Oil Filter |
| 23540455 | Centrifugal Oil Filter Assembly |
| 5241840501 | Lube Oil Full-Flow Filter |
| 5320900001 | Air Filter |
| 5360900001 | Air Filter |
| X51199100026 | Strainer |
| X57508300091 | Spin-On Fuel Filter |
| X59320200040 | Filter Cartridge for Coolant |
Valve train (21)
| 3669900240 | Valve Spring Washer |
| 4570530001 | Inlet Valve |
| 5240530120 | Outer Valve Spring |
| 5240530122 | Inner Valve Spring |
| 5240530805 | Exhaust Valve |
| 5240530830 | Valve Guide |
| 5240530905 | Exhaust Valve |
| 5240531101 | Inlet Valve |
| 5320530020 | Valve Spring |
| 5410500227 | Exhaust Valve |
| 5410501336 | Rocker Shaft Support |
| 5410530225 | Valve Spring Retainer |
Bearings (19)
| 5090200512 | Thrust Bearing |
| 5090250350 | Bearing Bushing |
| 5240332608 | Thrust Bearing, Size 0-1, UP/RIL |
| 5240332630 | Crankshaft Bearing Aux PTO End |
| 5240332730 | Crankshaft Bearing Driving End |
| 5240333407 | Thrust Bearing, Size 0-1, LO/SPT |
| 5240336602 | Crankshaft Bearing Lower Half |
| 5240336702 | Crankshaft Bearing Size 0-1 |
| 5240510110 | Camshaft Bearing, Standard |
| 5410330605 | Crankshaft Bearing Size 0-0 |
| 5410337101 | Crankshaft Bearing Size 0-0 |
| 5500511710 | Camshaft Bearing |
Fuel system (16)
| 5240160153 | Injector Sleeve |
| 5320700246 | Relief Valve |
| 5360702032 | Fuel Line |
| 5360900250 | Fuel Delivery Pump |
| EX52407500064 | Injector |
| X00005152 | Injector |
| X00009196 | Damper Ring for Injector |
| X51610100001 | Nozzle |
| X52408300025 | Fuel Hand Pump |
| X52808100004 | Fuel Delivery Pump |
| X53507500012 | Injector |
| X53608200005 | Low-Pressure Fuel Pump |
Turbocharging (8)
| 5090251301 | Compressor Wheel |
| 5090850160 | Piston Ring for Turbocharger |
| 5110804420 | Turbine Wheel |
| 5310900337 | Charge Air Line |
| 5361420025 | Exhaust Diffuser |
| X00038531 | Turbocharger Oil Supply Hose |
| E0070960399 | Exhaust Turbocharger |
| E0070960299 | Exhaust Turbocharger |
Cooling system (7)
| 5240980281 | Hose |
| X00017269 | Impeller |
| X00041552 | Cooler Plate |
| X53620200052/87 | Coolant Pump |
| XP59420700027 | Impeller |
| X54920200040/87 | High-Temperature Water Pump |
| EX53620700005/87 | Seawater Pump |
Lubrication (5)
| 5321800001 | Oil Pump |
| 5321800143 | Oil Spray Nozzle |
| 5361800515 | Oil Pressure Relief Valve |
| 5410100163 | Oil Separator |
| X00005363 | Oil Separator |
Air and intake (4)
| 0180945802 | Air Cleaner with Adapter Fitting |
| X52212500032 | Rubber Sleeve Charge-Air Line |
| X59499100014 | Hose for Air Compressor |
| X59499100015 | Hose for Air Compressor |
Starting and charging (2)
| X52421300004 | Alternator |
| X59417200010 | Electric Starter |
Tools and supplies (1)
| 40041 | Molykote G-N Plus Paste |
Cylinder heads (1)
| 5320100130 | Cylinder Head Cover Lower Part |
Control components (1)
| X00E50201022 | Governor |
Repair kits (1)
| XP52718300065 | Circlip Kit |
Related Resources
- MTU Exchange & Reman Part Numbers (X, XP, EX)
- Genuine, OEM, Reman or Aftermarket: Parts Grades Explained
- MTU 16V 2000 Engine Parts Guide
- Part Number Cross Reference
- Catalog PDF downloads — this series' part-number index as a printable PDF
- Reading a parts diagram — from position number to part number
- Authorised dealer or independent supplier?
- All parts guides
FAQ
What does the EX prefix on an MTU part number mean?
EX marks a genuine exchange / remanufactured unit supplied through the manufacturer exchange program: you receive a factory-remanufactured unit and return your old unit as the core. X and XP prefixes are used for related exchange numbering. The exchange unit carries the same functional warranty as new in the manufacturer program, but it is a different supply condition — and a different price — from a new unit.
My injector number has no prefix. Is it new or reman?
A plain number with no X, XP, or EX prefix is normally quoted as new. Because markings are sometimes incomplete, we confirm the supply condition in writing on the quote rather than assuming from the number alone.
Are aftermarket MTU injectors available?
For many Series 2000 and 4000 positions, third-party and remanufactured injectors exist at significantly lower cost. We quote them as a separate, clearly labelled line — never mixed into a genuine quote — and only supply them when the buyer confirms in writing that non-genuine parts are acceptable for the application.
Do you need the old injector back?
For genuine exchange (EX) quotations, core return terms apply and the core deposit is credited when the old unit is returned in acceptable condition. For new-unit quotations there is no core. We state which terms apply on every quote so there is no ambiguity at order stage.
The number stamped on the injector is unreadable. Can you still identify it?
Send clear photos of the injector body, any remaining label, the solenoid or connector end, and the engine data plate. Combined with the engine serial number, that is usually enough to identify the position — we confirm the number before quoting rather than guessing.
Send your engine details: Model, serial number, and the positions you need — we verify fitment and supersessions, then quote with availability per line.