DEF / AdBlue dosing injector
Match the injector by OE number, connector and SCR dosing layout
DEF / urea injectors dose AdBlue fluid into the SCR exhaust stream. For replacement sourcing, buyers should confirm the OE number, connector shape, nozzle orientation, mounting position and vehicle or engine application before ordering.
AdBlue / DEF Doser Injector & Urea Dosing Module Master Directory
Doser injectors and urea dosing modules are the metering heart of every SCR aftertreatment system. SHR Autoparts supplies factory-direct replacements for Bosch Denoxtronic 1 and 2.2 platforms, covering Mercedes-Benz, Volvo, Scania, MAN, DAF, Cummins, Mack and Iveco fleets. Send an OE number or VIN for an application check before ordering.
Three Primary Doser Injector & Dosing Module Categories
Every SCR system uses two urea-metering components: the dosing injector (nozzle mounted in the exhaust pipe, sprays DEF into the hot stream) and the urea dosing pump / doser module (supply unit that draws DEF from the tank, filters and pressurises it). Most failure calls involve both — the crystallised nozzle and the pump’s reversing-valve circuit.
DEF Doser Injectors & Dosing Valves
Stainless / ceramic nozzles with integrated 12V or 24V heater circuits, mounted downstream of the turbo on Bosch Denoxtronic 2.2, Mercedes OM471/OM473 and Cummins 2.2 platforms. The nozzle orifice is the #1 crystallization failure point.
- Orifice: 0.15 – 0.40 mm precision multi-hole (2–15 L/h)
- Heater: 12V / 24V anti-freeze element
- Platforms: Denoxtronic 2.2, Mercedes BlueTEC, Cummins 2.2
AdBlue / Urea Dosing Pumps & Doser Modules
The underfloor supply module: draws DEF from the tank, filters to sub-micron purity, pressurises to 4.5–9.0 bar and meters flow through a water-cooled dosing valve. Available for Denoxtronic 1, Denoxtronic 2.2 and Mercedes / Scania / Cummins OEM variants.
- Pressure: 4.5 – 9.0 bar (system generation dependent)
- Includes: Filter cartridge, reversing valve, temperature sensors
- Platforms: Denoxtronic 1, Denoxtronic 2.2, BlueTEC, Cummins
Injector & Pump Service Parts
Every injector or pump replacement should ship with its service kit: DEF filter cartridge, inlet strainer, sealing rings and coolant hoses. We stock the ancillary parts that turn a 2-hour swap into a 1-hour swap.
- Filters: Main DEF filter cartridge & inlet strainer
- Seals: Crush rings, O-rings, injector copper sealing washer
- Hoses: DEF supply lines, coolant loop hoses, mounting bolts
Doser Injector & Dosing Module Fitment Matrix (56+ OE Numbers)
Cross-references below are for identification only. Always confirm the full OE number, connector shape and pressure class before ordering — a reference match alone is not a fitment guarantee. Wholesale RFQ on any line.
A. DEF Doser Injectors / Dosing Valves (18 OE)
| OEM-Teilenummer | Brand / Fleet | Spezifikation | Vehicle & Engine Application | Querverweis | Wholesale Action |
|---|---|---|---|---|---|
| 0444023056 | Bosch / Cummins / Freightliner | Denoxtronic 2.2 · 12V/24V Multi-hole | Cummins ISX15, X15, ISB 6.7L, Freightliner Cascadia, Kenworth, Peterbilt | Cross: 4388105, 2888111, 0444023067, 4388106, 2888112, A0001402239 | |
| 0444023048 | Bosch / Mercedes-Benz | Denoxtronic 2.2 · 24V Heated | Mercedes Actros MP4, Antos, Arocs, Atego, Citaro Euro 6 (OM470 OM471 OM473) | Cross: 0444023049, A0001405339, A0001406839, A0001404139, 0444023075 | |
| 0444023059 | Bosch / Volvo / Renault | Denoxtronic 2.2 · 24V Heavy Duty | Volvo FH4, FH13, FM, FMX, VNL (D11, D13, D16) & Renault Trucks T, K, C DXi Euro 6 | Cross: 0444023060, 22391563, 21738899, 21575532, 21332704, 7422391563 | |
| 0444021021 | Bosch / VW / Audi | Denoxtronic 3.1/5.1 · 12V EA288 | VW Crafter, Passat B8, Tiguan, Golf VII, Audi A4 B8/B9, A6 C7, Q5 2.0 TDI Euro 6 | Cross: 0444021022, 04L131113, 04L131113A, 04L131113C, 04L131113J | |
| 0444021047 | Bosch / Mercedes Sprinter | BlueTEC Dosing Valve · 12V | Mercedes Sprinter 2500, 3500, Metris, E-Class W212, ML W166 OM642 3.0L OM651 2.1L | Cross: 0444021048, A0004900200, 0004900200, A0004900000, A0004900100 | |
| 0444021034 | Bosch / Ford Powerstroke | SCR Reductant Doser · 12V | Ford F-250, F-350, F-450, F-550 Super Duty 6.7L Powerstroke Diesel (2011-2022+) | Cross: 0444021035, BC3Z-5J281-B, BC3Z5J281B, FC3Z-5J281-A, FC3Z5J281A | |
| 0444023050 | Bosch / MAN Truck & Bus | Denoxtronic 2.2 · 24V Heated | MAN TGX, TGS, TGM, TGL Euro 6 Commercial Trucks (D0836, D2066, D2676, D3876) | Cross: 0444023051, 51.15403-6003, 51.15403-6004, 51.15403-6000, 51154036003 | |
| 0444023052 | Bosch / Scania | Denoxtronic 2.2 · 24V Euro 6 | Scania R, S, G, P Series Euro 6 Trucks (DC09, DC13 6-Cyl & DC16 V8 Engines) | Cross: 0444023053, 2097221, 2472304, 2181966, 2181967, 2245282, 2655852 | |
| 0444023054 | Bosch / DAF / PACCAR | PACCAR EAS-3 · 24V Heated | DAF XF 106, CF Euro 6, LF Euro 6, Kenworth, Peterbilt with PACCAR MX-11 & MX-13 | Cross: 0444023055, 1876082, 1928420, 2037568, 2115714, 2115715, 2115714PE | |
| 0444023058 | Bosch / Iveco / FPT | HI-SCR Dosing Valve · 24V | Iveco Stralis Hi-Way, Trakker, Eurocargo, S-Way Euro 6 (Cursor 9/11/13, Tector 7) | Cross: 0444023042, 5801479314, 5801397097, 5801740925, 504382372, 47715374 | |
| A0001402239 | Detroit Diesel / Freightliner | One-Box SCR Doser · 12V | Freightliner Cascadia, Western Star 49X, Detroit DD13, DD15, DD16 (EPA10, GH14, GH17) | Cross: EA0001402039, A0001402039, A0001404439, A0001407439, 0444023056 | |
| 12662659 | GM / Chevrolet / GMC | Duramax SCR Doser · 12V | Chevy Silverado, GMC Sierra 2500HD/3500HD 6.6L Duramax LML/L5P & Colorado 2.8L | Cross: 12642310, 12683073, 12698944, 217-3444, 0444021043, 0444021044 | |
| 68210106AA | Mopar / Dodge Ram | Cummins 6.7L SCR Doser · 12V | Dodge Ram 2500, 3500, 4500, 5500 Chassis Cab 6.7L Cummins Diesel (2013-2024+) | Cross: 68210106AB, 68232648AA, 68157585AA, 0444021036, 0444021037 | |
| 68249080AA | Mopar / Ram / Jeep | EcoDiesel 3.0L V6 SCR · 12V | Ram 1500 3.0L V6 EcoDiesel & Jeep Grand Cherokee WK2 3.0L EcoDiesel (2014-2021) | Cross: 68211213AA, 68376696AA, 0444021049, 0444021050, 68157585AB | |
| 18308514448 | BMW BluePerformance | SCR Dosing Valve · 12V | BMW 320d, 520d, 530d, X3, X5 xDrive30d, X6, X7 (B47, N47, N57, B57 Diesel) | Cross: 18308514449, 8514448, 8514449, 0444021040, 0444021041, 18308513575 | |
| 7P0131113 | VW / Audi / Porsche | 3.0 TDI SCR Doser · 12V | VW Touareg 7P 3.0 TDI, Audi Q7 3.0 TDI, Porsche Cayenne 92A 3.0 Diesel Euro 6 | Cross: 7P0131113A, 7P0131113C, 95811311300, 0444021033, 0444021032 | |
| 8-98246411-0 | Isuzu Commercial | Denoxtronic 2.2 · 24V Heated | Isuzu NPR, NQR, NRR, Elf, Forward 4HK1 (5.2L), 6HK1 (7.8L), 4JJ1 (3.0L) Euro 5/6 | Cross: 8982464110, 8-98254095-0, 8982540950, 0444023062, 0444023063 | |
| 454-9549 | Caterpillar (CAT) | CEM Tier 4 Final · 24V Heavy | CAT 320E, 323E, 336E, 950K, 966K, CT660 Trucks, C7.1, C9.3, C13, C15 Engines | Cross: 4549549, 388-7554, 3887554, 479-7724, 4797724, 524-1151, 0444023034 | |
| 6754-71-1210 | Komatsu Construction | Komatsu SCR · 24V Heated | Komatsu Excavators PC200-11, PC210-11, PC300-11, PC360-11, SAA6D107E, SAA6D114E | Cross: 6754711210, 600-471-1110, 6004711110, 6754-71-1211, 0444023026 | |
| DZ111244 | John Deere Agricultural | PowerTech PSS · 12V Heated | John Deere 6R, 7R, 8R Tractors, S-Series Combines, PowerTech 4.5L 6.8L 9.0L 13.5L | Cross: DZ111245, RE552176, DZ100552, SE502758, 0444023038, 0444023039 | |
| 612640130088 | Weichai / Sinotruk HOWO | Denoxtronic 2.2 · 24V Heated | Weichai WP10, WP12, WP13, Sinotruk HOWO A7/T7H, Shacman F3000/X3000 Euro 5/6 | Cross: 1000627546, 612640130089, WG9925540101, A0001402239, 0444023028 | |
| BK21-5J281-AB | Ford EcoBlue Transit | Transit EcoBlue · 12V Heated | Ford Transit Mk8 (2014-2023), Transit Custom, Tourneo Custom 2.0L EcoBlue 3.2 TDCi | Cross: 1842874, 2014782, BK215J281AB, 0444021046, 0444021045, GK21-5J281-AB | |
| 4389140 | Cummins CES / Freightliner | Underfloor Dosing Pump Unit | Cummins ISX15, X15, ISB6.7, ISL9, Freightliner Cascadia, Kenworth, Peterbilt | Cross: 4389140RX, 2888111, 4309449, 4309449RX, 2888112, 0444042003 | |
| 22391565 | Volvo / Renault Trucks | EM-EU6 Dosing Pump Module | Volvo FH4, FM4, FMX, VNL Euro 6 (D11K, D13K) & Renault Trucks T, K, C DXi | Cross: 21738899, 21575532, 21332704, 7422391565, 85022215, 0444042013 | |
| 0444043003 | Bosch / Volvo / Mack | 5-hole nozzle · 12V heater | Volvo FH4 / FM4 D11 D13, Mack MP7 MP8 | Cross: 22391563, 21577030, 21243945 | RFQ |
| 0444043004 | Bosch / Volvo / Mack | 5-hole nozzle · 24V | Volvo FH4 / FM4 D11 D13, Mack MP7 MP8 | Cross: 22391563, 21577030 | RFQ |
| 0444043087 | Bosch / Volvo | 5-hole nozzle · Denoxtronic 2.2 | Volvo FH4 / FM4 / FE D11 D13 | Cross: 21332704, 21332711 | RFQ |
| 0444043088 | Bosch / Volvo | 5-hole nozzle · Denoxtronic 2.2 | Volvo FH4 / FM4 / FE D11 D13 | Cross: 21332704, 21332711 | RFQ |
| 22391563 | Volvo | DEF dosing valve · M12 mount | Volvo FH4 / FM4 / FE D11 D13 | Cross: 0444043003, 21577030, 21243945 | RFQ |
| 21577030 | Volvo | DEF dosing valve | Volvo FH4 / FM4 D11 D13 | Cross: 0444043003, 22391563 | RFQ |
| 21243945 | Volvo | DEF dosing valve | Volvo FH4 / FM4 D11 D13 | Cross: 0444043003, 22391563 | RFQ |
| 21332704 | Volvo | DEF dosing valve · Euro 6 | Volvo FH4 / FM4 D11 D13 | Cross: 0444043087, 0444043088 | RFQ |
| 21332711 | Volvo | DEF dosing valve · Euro 6 | Volvo FH4 / FM4 D11 D13 | Cross: 0444043087, 0444043088 | RFQ |
| A0001400379 | Mercedes-Benz | DEF injector · OM471 OM473 | Actros MP4 / MP5, Arocs | Cross: A0001400380 | RFQ |
| A0001400380 | Mercedes-Benz | DEF injector · OM471 OM473 | Actros MP4 / MP5, Arocs | Cross: A0001400379 | RFQ |
| 2871881 | Cummins | DEF doser injector · 2.2 system | ISX11 / ISX15, Mack MP7 MP8 | Cross: 2871880, 4993027 | RFQ |
| 2871880 | Cummins | DEF doser injector | ISX / ISL | Cross: 2871881, 4993027 | RFQ |
| 1876276 | Scania | DEF injector · Euro 6 | R-series / S-series DC13 DC16 | Cross: 2009174, 2292717 | RFQ |
| 2009174 | Scania | DEF injector · Euro 6 | R-series / S-series DC13 DC16 | Cross: 1876276, 2292717 | RFQ |
| 2292717 | Scania | DEF injector · Euro 6 | R-series / S-series DC13 DC16 | Cross: 1876276, 2009174 | RFQ |
| 5801567096 | Iveco | DEF injector · Cursor 13 | Stralis Hi-Way / Trakker | Cross: 5801567097 | RFQ |
| 1819798 | DAF | DEF injector · Euro 6 | XF / CF MX-11 MX-13 | Cross: 1819799 | RFQ |
B. AdBlue / Urea Dosing Pumps & Doser Modules (38 OE)
| OEM-Teilenummer | Brand / Fleet | Spezifikation | Vehicle & Engine Application | Querverweis | Wholesale Action |
|---|---|---|---|---|---|
| 0444010004 | Bosch / DAF | Denoxtronic 1 dosing pump | DAF LF / CF / XF | Cross: 1674660, 1693191 | RFQ |
| 0444010006 | Bosch / DAF | Denoxtronic 1 dosing pump | DAF LF / CF / XF | Cross: 1674660, 1738100 | RFQ |
| 0444010015 | Bosch / DAF | Denoxtronic 1 dosing pump | DAF CF / XF Euro 5 | Cross: 1746947, 1791500 | RFQ |
| 0444010017 | Bosch / DAF | Denoxtronic 1 dosing pump | DAF CF / XF Euro 5 | Cross: 1746947, 1791500 | RFQ |
| 0444010018 | Bosch / DAF | Denoxtronic 1 dosing pump | DAF CF / XF Euro 5 | Cross: 1746947, 1791500 | RFQ |
| 044401011016 | Bosch | AdBlue doser module | European CV (Euro 5) | Cross: 0444010033 | RFQ |
| 1674660 | DAF | AdBlue pump · Denoxtronic 1 | DAF LF45 / LF55 / CF75 / CF85 | Cross: 0444010004, 0444010006 | RFQ |
| 1693191 | DAF | AdBlue pump · Denoxtronic 1 | DAF LF / CF | Cross: 0444010004, 0444010006 | RFQ |
| 1738100 | DAF | AdBlue pump · Denoxtronic 1 | DAF LF / CF / XF | Cross: 0444010006, 1674660 | RFQ |
| 1746947 | DAF | AdBlue pump · Euro 5 | DAF CF85 / XF105 | Cross: 0444010015, 0444010017 | RFQ |
| 1791500 | DAF | AdBlue pump · Euro 5 | DAF CF / XF | Cross: 0444010015, 1746947 | RFQ |
| 1791540 | DAF | AdBlue pump · Euro 5 | DAF CF / XF | Cross: 0444010015, 1746947 | RFQ |
| 1818625 | DAF | AdBlue pump · Euro 6 | DAF XF / CF | Cross: 0444010018, 1791540 | RFQ |
| 0444022060 | Bosch | Denoxtronic 2.2 dosing pump | European CV (Euro 6) | Cross: 0444022011, 0444022024 | RFQ |
| 0444022011 | Bosch | Denoxtronic 2.2 dosing pump | European CV (Euro 6) | Cross: 0444022060, 0444022039 | RFQ |
| 0444022024 | Bosch | Denoxtronic 2.2 dosing pump | European CV (Euro 6) | Cross: 0444022060, 0444022051 | RFQ |
| 0444022039 | Bosch | Denoxtronic 2.2 dosing pump | European CV (Euro 6) | Cross: 0444022060, 0444023052 | RFQ |
| 0444022051 | Bosch | Denoxtronic 2.2 dosing pump | European CV (Euro 6) | Cross: 0444022024, 0444023052 | RFQ |
| 0444023052 | Bosch | Denoxtronic 2.2 dosing pump | European CV (Euro 6) | Cross: 0444022051, 0444021034 | RFQ |
| 0444021034 | Bosch | Denoxtronic 2.2 dosing pump | Mercedes / European CV | Cross: 0444023052 | RFQ |
| A0001407678 | Mercedes-Benz | AdBlue pump · Actros MP4 | Actros MP4 (OM471) | Cross: 0444021034 | RFQ |
| A0001405478 | Mercedes-Benz | AdBlue pump | Actros MP4 / MP5 | Cross: A0001404478 | RFQ |
| A0001404478 | Mercedes-Benz | AdBlue pump | Actros MP3 / Axor | Cross: A0001405478 | RFQ |
| 2140807 | Scania | AdBlue pump · Euro 5/6 | R-series / P-series | Cross: 21575532, 2038755 | RFQ |
| 21575532 | Scania | AdBlue pump · Euro 6 | R-series / S-series | Cross: 2140807, 21984798 | RFQ |
| 2038755 | Scania | AdBlue pump · Euro 5 | P-series / G-series | Cross: 2140807 | RFQ |
| 21984798 | Scania | AdBlue pump · Euro 6 | R-series / S-series | Cross: 21575532 | RFQ |
| 2655852 | Scania | AdBlue pump | L / P / G / R / S / T-series | Cross: 2140807 | RFQ |
| 5273338 | Cummins / DAF | AdBlue pump · Cummins ISX | Cummins ISX / ISL | Cross: 4388105, 2888173 | RFQ |
| 4388105 | Cummins | AdBlue pump · Cummins ISX | Cummins ISX / ISL | Cross: 5273338, 4387657 | RFQ |
| 2888173 | Cummins | AdBlue pump · Cummins ISL | Cummins ISL / ISX | Cross: 5273338, 4388105 | RFQ |
| 4387657 | Cummins | AdBlue pump · Euro 5/6 | Cummins ISX / ISL | Cross: 4388105 | RFQ |
| 81154036146 | MAN | AdBlue pump · TGM/TGL/TGX | MAN TGM / TGL / TGX / TGS | Cross: 51.16101-6105 | RFQ |
| 51.16101-6105 | MAN | AdBlue pump | MAN TGA / TGS / TGX | Cross: 81154036146 | RFQ |
| 22851845 | Volvo | AdBlue pump · Euro 6 | Volvo FH4 / FM4 | Cross: 21933055, 21713467 | RFQ |
| 21933055 | Volvo | AdBlue pump · Euro 6 | Volvo FH4 / FM4 | Cross: 22851845, 21713467 | RFQ |
| 21713467 | Volvo | AdBlue pump | Volvo FH / FM | Cross: 22851845, 21933055 | RFQ |
Hot Vehicle Platforms for Doser Injectors & Urea Pumps
The platforms that generate the most SCR metering-component replacement demand across our distributor network, with the OE numbers we are asked for most often:
| Brand / Fleet | Hot Vehicle Platforms & Engines | Hot OE Numbers |
|---|---|---|
| Mercedes-Benz | Actros MP4 / MP5 (OM471 / OM473), Arocs, Axor, Econic | A0001400379, A0001400380, A0001407678, A0001404478, 0444021034 |
| Volvo | FH4 / FM4 / FE / FL (D11 / D13 / D8) | 22391563, 21577030, 21243945, 21332704, 22851845, 21933055 |
| Scania | R / S / P / G / L / T-series (DC13 / DC16) | 1876276, 2009174, 2292717, 2140807, 21575532, 2655852 |
| MAN | TGX / TGS / TGM / TGL / TGA | 81154036146, 51.16101-6105 |
| DAF | XF / CF / LF (MX-11 / MX-13) | 1674660, 1693191, 1738100, 1746947, 1818625, 1819798 |
| Cummins | ISX / ISL / ISB (heavy-duty + industrial) | 2871881, 2871880, 5273338, 4388105, 4387657 |
| Mack | MP7 / MP8 (Bosch Denoxtronic 2.2) | 0444043003, 0444043004, 2871881 |
| Iveco | Stralis / Trakker (Cursor 13) | 5801567096 |
Doser Injector & Urea Pump Engineering & Sourcing Guide
1. Crystallization: The #1 Failure Mode
DEF contains 32.5% urea. When exhaust temperature stays too low for complete decomposition, or the engine is keyed off before the nozzle clears, urea crystallises in the orifice. Short-trip urban trucks fail injectors fastest. Flush crystallised units in 50–60°C deionised water — never with metal picks.
2. Pressure Classes Must Match
Bosch Denoxtronic 2.2 runs at 9.0 ± 0.3 bar; Denoxtronic 6.5 at 4.5–5.5 bar. Fitting the wrong generation pump produces pressure fault codes (SPN 4334 / 4337) and premature nozzle wear. Always quote the engine ECU code, not just the badge.
3. Doser vs. Injector — Same Job, Two Parts
“Doser” (Cummins terminology) and “injector” (aftermarket) describe the same exhaust-mounted nozzle. The supply unit is the “dosing pump / doser module”. Quote both part numbers on one RFQ line so we can ship the complete metering set.
4. Bench Test Before Shipping
Every unit passes a 15–25 ml / 60 s flow test and a key-off reversing-valve vacuum check (-0.3 to -0.5 bar). Heaters are cycle-tested at 12V / 24V. Full test data ships with each wholesale order — see our Denoxtronic troubleshooting guide.
Send your doser injector OE numbers today
Full OE number + vehicle year / engine code, and we confirm availability and quote within one working day. Export packaging, EPC documentation and DDP terms available. IATF 16949 certified factory since 2010.
Technical guide and buying support
Understand DEF injector failure symptoms, dosing issues, and replacement information before sending an RFQ.
DEF / Urea Injector RFQ checklist
DEF injector matching depends on dosing module design, nozzle layout, OE number, and SCR system application.
Selection checklist
- DEF injector OE number or dosing valve photo
- Vehicle / engine application and emission standard
- Connector, nozzle and mounting details
- Failure code, crystallization, or dosing issue details
Common symptoms
- DEF crystallization around nozzle
- SCR efficiency or dosing fault code
- AdBlue warning or derate condition
- Leakage, blockage, or poor spray pattern
What to send for RFQ
- OE number or dosing module reference
- Vehicle / SCR system details
- Sample or bulk order requirement
Buyer FAQ
What should I attach for a DEF injector quotation?
A dosing valve label photo, nozzle side photo, connector photo, and vehicle application will improve matching accuracy.
Can SHR Autoparts support sample DEF injector orders?
Yes. Include your sample quantity and destination country so the team can advise availability and delivery options.
Related technical resources
DEF urea injector guides and SCR resources
Use these guides to check DEF dosing symptoms, urea quality, and SCR system context before requesting a quote.
DEF Urea Injector Guide: Function and Failure Symptoms
Function, failure symptoms, and replacement basics for DEF dosing injectors.
Read guideAdBlue & DEF Systems Explained
SCR technology, urea quality, and common system failure context.
Read guide
