0445120194
0445120194 Injector: Detroit DD13 Mercedes OM471 Specs
A4710700887, A4710700187, A4710700287, A4710700387, A4710700487, 4710700887, EA4600700687, RE4600700687, RA4710700887F00RJ14012F00VX500592100 barProduct Overview
The BOSCH 0445120194 is an authentic OEM heavy-duty common rail fuel injector (CRIN4.2 generation, formula CR/IPL36/ZERIS70S) calibrated for 12.8L Detroit Diesel DD13 (EPA10/GHG14) and European Mercedes-Benz OM471 Euro 6 commercial transport engines. Operating with an amplified peak injection pressure reaching 2100 bar, it features the factory genuine Bosch nozzle assembly F00VX50059 and high-speed electromagnetic actuation. It directly replaces Daimler / Detroit OEM references A4710700887, A4710700187, A4710700287, A4710700387, A4710700487, 4710700887, remanufactured OE EA4600700687 / RE4600700687 / RA4710700887, compatible Bosch units 0445120195 and 0445120385, and Bosch Exchange units 0986435537 and 0986435642. Program the unique calibration code into the Detroit DDEC or Mercedes MCM engine control module upon installation to maintain strict cylinder balancing.
Verify OEM part number A4710700887 / A4710700387 on the injector solenoid collar before installation. Bosch 0445120194 is engineered exclusively for 12.8L Detroit Diesel DD13 and Mercedes-Benz OM471 heavy-duty platforms (A471 series). It must NOT be interchanged with 14.8L DD15 injectors (A472 series, 0445120104/0445120207). Injector clamp bolts are Torque-To-Yield (TTY) stretch fasteners and MUST be replaced with new bolts torqued to 20 N·m (15 lb·ft) + 90°.
Vehicle & Engine Fitment
| Vehicle | Engine | Years |
|---|---|---|
| Freightliner Cascadia / Coronado / 114SD 12.8L | Detroit Diesel DD13 / DD15 (Mercedes-Benz OM 471 12.8L) | 2010-2017 |
| Western Star 4700 / 4800 | Detroit Diesel DD13 / DD15 (Mercedes-Benz OM 471 12.8L) | 2011-2017 |
| Mercedes-Benz Actros MP4 / Antos / Arocs 1842 / 1845 / 1848 | Detroit Diesel DD13 / DD15 (Mercedes-Benz OM 471 12.8L) | 2011-2017 |
Technical Specifications
| Specification | Value |
|---|---|
| SKU | 0445120194 |
| Brand | Freightliner / Western Star / Mercedes-Benz / BOSCH |
| Type | Complete Injector Assembly (Bosch Common Rail (CRIN4.2 / X-Pulse Amplified solenoid)) |
| OE Number | A4710700887, A4710700187, A4710700287, A4710700387, A4710700487, 4710700887, EA4600700687, RE4600700687, RA4710700887 |
| Nozzle CodeCore Spec | |
| Control ValveCore Spec | |
| Injection System | Bosch Common Rail (CRIN4.2 / X-Pulse Amplified solenoid) |
| Operating PressureCore Spec | |
| Torque Spec | 40 N·m |
| Hold Down Torque | 20 N·m + 90° |
| Warranty | 12 Months |
| Emission Standard | Euro 6 / EPA10 |
| Engine Family | Detroit DD13 & Mercedes-Benz OM471 (12.8L) |
| Coding Required | Yes (IMA / Calibration Code) |
Installation Tips
Tools needed: Detroit Diesel J-48770 high-pressure line socket or open-end torque crowfoot wrench, Torque angle gauge / digital angle torque wrench (20 N·m + 90° capacity), Clean brass injector bore brush and shop vacuum extraction kit, Detroit Diagnostic Link (DDDL) or Mercedes-Benz Xentry diagnostic tool
- Thoroughly clean the cylinder head injector bore using a brass bore brush and vacuum extraction; inspect the lower sealing sleeve for pitting, fretting, or residual copper washer fragments.
- Discard used hold-down clamp stretch bolts. Install a brand-new copper crush washer onto the injector tip, applying a light film of clean engine oil or high-temperature ceramic anti-seize paste to the injector body (strictly avoiding the nozzle tip and spray orifices).
- Insert injector 0445120194 vertically into the bore until properly seated; hand-start the hold-down clamp bolt to ensure alignment with the rocker arm assembly.
- Hand-thread the high-pressure fuel line cap nuts onto the injector inlet and rail fitting until finger-tight to prevent thread cross-alignment.
- Torque the brand-new hold-down clamp bolt to exactly 20 N·m (15 lb·ft), then apply a continuous 90° angle turn using a calibrated torque angle gauge.
- Torque the high-pressure fuel line cap nuts to 40 N·m (29 lb·ft) using tool J-48770 or an open-ended torque crowfoot wrench while counter-holding the injector fitting.
- Connect the electrical solenoid harness terminals and tighten the retaining nuts to 1.5 N·m (1 lb·ft). Do not over-torque to prevent terminal post fracture.
- Torque the injector wiring harness allen head bracket screws to 10 N·m (7 lb·ft).
- Reinstall the rocker cover and torque all cover bolts in an alternating cross pattern to 20 N·m (15 lb·ft).
- Connect Detroit Diagnostic Link (DDDL) or Mercedes Xentry; program the 6-digit injector calibration code printed on the injector body into the respective cylinder slot, prime the low-pressure fuel circuit, and verify zero fuel rail leakage under high idle.
- Critical TTY Bolt Mandate: Detroit DD13 injector clamp bolts are torque-to-yield fasteners engineered to stretch during the final 90° step. Reusing old bolts causes clamp load relaxation, combustion gas blowby, and damaged injector cups.
- High-Pressure Line Counter-Holding: Always use the factory service crowfoot tool J-48770 when torquing the line nut to 40 N·m. Uneven side loading can shear internal alignment pins and trigger rail pressure fault codes (P0087).
- Solenoid Terminal Caution: The M4 electrical studs are delicate. Tighten strictly to 1.5 N·m (13 lb·in). Over-tightening will snap the stud inside the solenoid housing, requiring complete injector replacement.
- DDEC Calibration Coding: Failure to update the injector calibration code in DDDL after replacement results in rough idle, cylinder cutout test deviations, and premature DPF regeneration cycles.
Frequently Asked Questions
What engines use Bosch injector 0445120194?
Bosch 0445120194 is designed for 12.8L Detroit Diesel DD13 (EPA10 / GHG14 / GHG17) and European Mercedes-Benz Actros MP4, Antos, and Arocs commercial trucks equipped with the OM471 Euro 6 engine platform.
What is the OEM part number for 0445120194?
The primary Daimler / Detroit OEM part number is A4710700887 (or 4710700887). Associated OE references include A4710700187, A4710700287, A4710700387, A4710700487, and factory remanufactured numbers EA4600700687, RE4600700687, and RA4710700887.
Can I use 0445120194 on a Detroit DD15 engine?
No. Detroit DD15 (14.8L, OM472) engines use the A472 series injectors (such as Bosch 0445120104 or 0445120207). Injectors between DD13 and DD15 differ in nozzle spray geometry (F00VX50059 vs F00VX50038), internal displacement, and fueling delivery maps. Interchanging them will cause cylinder misfire, heavy black smoke, and potential piston damage.
What is the hold-down clamp bolt torque specification?
Detroit Diesel factory service procedure specifies torquing the hold-down clamp bolt to 20 N·m (15 lb·ft) followed by a 90° angle turn. You must always install brand-new stretch bolts.
What torque is required for the high-pressure fuel line?
The high-pressure fuel line nuts must be torqued to 40 N·m (29 lb·ft) using service tool J-48770 or an appropriate crowfoot wrench with counter-holding.
Does Bosch 0445120194 require ECU programming?
Yes. Each injector has a specific calibration code printed on its body that must be entered into the DDEC / MCM engine control module using diagnostic software (DDDL / Xentry) to balance fuel delivery per cylinder.
What are the compatible and exchange part numbers for 0445120194?
Compatible Bosch production numbers include 0445120195 and 0445120385. Factory remanufactured exchange units are supplied under Bosch part numbers 0986435537 and 0986435642.
Diagnostic Trouble Codes & Fault Protocols
Common diagnostic trouble codes (DTCs) triggered when this common rail injector experiences wear, circuit faults, or calibration drift:
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
Injector Circuit Malfunction / Open Circuit
Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
Technical Diagnostic & Service Protocols
Authoritative field procedures, diagnostic testing thresholds, and service SOPs for this assembly.