0445110748
BOSCH 0445110748 Isuzu D-Max 3.0 TDCI 4JJ1 Injector
8974485560, 8981482590F00VC01359DLLA153P25211600 bar peak rail pressureProduct Overview
The BOSCH 0445110748 is a solenoid-type common rail injector for Isuzu 4JJ1-TC applications - D-Max and MU-X 3.0L TDCI, and N-Series trucks. It does NOT fit the Maruti/Suzuki Swift 1.3 DDiS, which uses Bosch 0445110398 instead (OEM 15710-68L00). Internal nozzle DLLA153P2521 (0433172521), control valve F00VC01359, 6-hole / 153°/ 1600 bar. Verify the Bosch stamp 0 445 110 748 on the failed body before ordering. Isuzu OEM reference 8974485560.
Always verify the Isuzu OE reference (8974485560) on your existing injector body before ordering. The DLLA153P2521 nozzle (internal code 0433172521) and F00VC01359 solenoid control valve are calibrated for the 4JJ1-TC platform only - the nearest Bosch alternate, 0445110351, belongs to the 1.3 Multijet family and is NOT a drop-in replacement on the 4JJ1.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Number | 8974485560, 8981482590 |
| Bosch Part Number | 0 445 110 748 |
| Nozzle CodeCore Spec | |
| Engine Family | Isuzu 4JJ1-TC (3.0L turbo intercooled, 2999cc) |
| Control ValveCore Spec | |
| Injection System | Common Rail Diesel (CRI2) |
| Operating PressureCore Spec | |
| Emission Standard | Euro 3/4 |
| Material | Hardened alloy steel injector body |
| Net Weight | 510 g |
| Warranty | 12 months |
Installation Tips
- Depressurise and disconnect: Remove fuel pump fuse, crank engine 5 seconds to release rail pressure, disconnect battery negative terminal. NEVER crack HP lines with the rail pressurised.
- 2-wrench procedure (CRITICAL for Isuzu 4JJ1): Use a 14 mm wrench to hold the F00VC01359 solenoid body and a 17 mm wrench to tighten the high-pressure line nut — applying force directly to the solenoid twists the valve assembly and causes a permanent no-start fault. This is universal across Bosch CRIN2/CRI2 family used on the 4JJ1.
- Injector hold-down clamp torque: 20 N·m + 90° angle two-stage (Bosch CRIN2 standard) — first criss-cross pass at 20 N·m, then angle-tighten an additional 90°. Mark a witness line before the angle stage. Do NOT use an impact wrench at any stage.
- HP line torque: 25-30 N·m with 14 mm (solenoid side) + 17 mm (line side) flare nut wrenches. Both wrenches MUST be dedicated flare nut style — never use open-ended wrenches on the line nuts (round-off risk).
- Replace ALL seals: New copper washer (HP side) and new O-rings (return side) every reinstall — the 4JJ1 is particularly sensitive to reused seals (combustion gas leakage sets P2463 / P0299 turbo codes as secondary symptoms). Lubricate O-rings with clean engine oil, NOT silicone grease.
- Clean the injector bore with a reamer before inserting the new injector. Carbon deposits on the bore seat are the #1 cause of post-install P0401 (EGR flow) false codes on the D-Max / MU-X.
- Prime the low-pressure circuit: Hand pump 3x before cranking. Then crank engine WITHOUT throttle for 5-10 seconds to clear air from the HP rail. Start and idle at 1500 rpm for 5 minutes — check all HP joints and the HP pump area for leaks.
- IMA coding (CRITICAL on 4JJ1-TC): The 4JJ1-TC requires 4-digit IMA (Injection Quantity Adjustment) coding via Isuzu Diagnostic Service Tool (IDSS) or Bosch KTS 590 with Isuzu adapter. Enter the code from the new injector label. Failure to code results in P0201-P0204 (cylinder-specific injector circuit) and P0606 (ECM processor performance) within minutes of first start.
- Post-install OBD scan: Codes to watch after a 4JJ1 / D-Max / MU-X injector swap: P0201 / P0202 / P0203 / P0204 (cylinder-specific circuit), P0300 (random misfire), P0606 (ECM processor — coding error), P2463 (diesel particulate filter restriction — false positive if combustion gas leak), P0299 (turbocharger underboost — false positive if HP leak at the 25-30 N·m banjo).
- Injector balance verification: Use IDSS or Bosch KTS to run the cylinder cut-out test. Deviation between cylinders must be within ±3 percent. Out-of-spec deviation on the 4JJ1-TC often indicates a defective replacement injector (rare) or air ingestion at the feed tube.
- Common 4JJ1-TC failure mode — split nozzle nut: The 6-hole DLLA153P2521 nozzle nut is a known wear point on high-mileage (> 200,000 km) D-Max engines. Replace all 4 nozzle nuts as a set if mileage exceeds 150,000 km, even when only one injector is being replaced.
- Hot re-torque check: After a 30-minute road test under load, let the engine cool 15 minutes and re-torque the HP line nuts to 25-30 N·m. Thermal cycling on the 4JJ1-TC can relax the banjo clamp by up to 10 percent.
Frequently Asked Questions
Is 0445110748 the right injector for Isuzu D-Max 3.0L TDCI?
Yes - the Bosch 0445110748 is the OE common rail injector for the Isuzu D-Max 3.0L TDCI (engine code 4JJ1) from 2007 through 2016. CRDI valve code F00VC01359, nozzle DLLA153P2521 (0433172521). The Isuzu D-Max also uses 0445110748 in the MU-X 3.0L TDCI. Verify the Bosch code 0 445 110 748 stamped on the failed injector body and the application label before ordering.
Does 0445110748 fit a Maruti / Suzuki Swift 1.3 DDiS?
No. The Swift IV 1.3 DDiS (D13A / 1.3 Multijet, 1248cc) uses Bosch 0445110398 - OEM 15710-68L00 / 55219886 / 15710-63P00, Bosch alternate 0445110351. That injector's nozzle is DLLA150P1734 (0433172061) with control valve F00VC01200, a different Bosch family from the 4JJ1's DLLA153P2521 / F00VC01359. The two are not interchangeable and a wrong order will not start the engine. This listing is sometimes mis-sold as a Swift part - verify the Bosch stamp 0 445 110 748 against 0 445 110 398 before buying.
What is the difference between 0445110748 and 0445110351?
They are different Bosch families and not interchangeable. 0445110748 is the 4JJ1-TC injector (Isuzu D-Max / MU-X / N-Series): nozzle DLLA153P2521 (0433172521), control valve F00VC01359. 0445110351 is the 1.3 Multijet injector (Fiat / Opel / Ford / Suzuki Swift 1.3 DDiS), superseded by 0445110398, with nozzle DLLA150P1734 / 0433172061 and control valve F00VC01200. Cross-referencing the nozzle or valve code is the fastest way to tell them apart - the bodies look similar but the internals differ.
Do I need to code the ECU after installing 0445110748 on an Isuzu D-Max?
On the 4JJ1 / 4JK1 platform, cylinder-specific IMA coding is recommended via Isuzu IDSS (dealer tool) or a compatible aftermarket tool (Autel MaxiSys, Launch X431 with Isuzu software). Skip the coding and the ECU will use default trim values, which can cause a 5-8% fuel economy penalty, slight rough idle, and an in-service emissions fault at the next inspection. Coding the IMA block takes 10-15 minutes at the workshop.
What is the internal nozzle and control valve of 0445110748?
Internal nozzle: DLLA153P2521 (Bosch code 0433172521), a 6-hole design with 153° spray angle, calibrated for 1600 bar opening pressure. Control valve: F00VC01359. Both components are factory-matched by Bosch for the 0445110748 / Isuzu D-Max 4JJ1 application. The injector is bench-tested 100% pre-delivery and rated for the 4JJ1 3.0L TDCI duty cycle (high EGR, high back-pressure, hot re-circulation gases).
Is 0445110748 the right injector for a Tata Sigma Truck?
No verified source supports that application. The Tata Sigma 4SP / 4SPCR listing appears only in generic third-party cross-reference tables that do not confirm the fit, and no Bosch or Tata documentation backs it. The only applications confirmed for 0445110748 are Isuzu 4JJ1-TC (D-Max / MU-X / N-Series). If you have a Tata Sigma, check the OE stamp on the original injector and consult the Tata dealer EPC before ordering - do not rely on cross-reference tables.
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.