BLLA 156 P 889/

BOSCH INJECTOR NOZZLE: DLLA156P889 – FULL SPECIFICATION

I. Key Identification & Compatible Injectors

Nozzle (Injector Tip) P/N: DLLA156P889
BOSCH MEC / Catalog Number: 0 433 171 594
System Manufacturer: BOSCH Common Rail Diesel Injection System.

Compatible Injector Assembly P/N(s):
- BOSCH Injector References: 0 445 110 034 / 0 445 110 035
- OEM / Vehicle Manufacturer: Mercedes-Benz
- Typical Applications (with HP / kW):
• Mercedes-Benz Sprinter 2.2 / 2.7 CDI (OM611 / OM612) – 82–125 kW / 110–170 HP
• Mercedes-Benz E-Class E320 CDI – 125 kW / 170 HP
• Mercedes-Benz S-Class S320 CDI – 125 kW / 170 HP
• Mercedes-Benz ML-Class ML270 CDI – 125 kW / 170 HP

II. Vehicle / Engine Application & Technical Data

Primary Vehicle Application: Mercedes-Benz 2.2 L and 2.7 L CDI engines used in passenger and commercial vehicles.
Engine Type: Inline-4 / Inline-5 / Inline-6 Common Rail Diesel, Euro 4 / Euro 5 compliant
Injector Technology: BOSCH Common Rail Solenoid Injector.
Nozzle Type: DLLA156P889 — high-precision multi-hole nozzle for efficient fuel atomization and combustion.
Technical Characteristics:
- Material: High-strength tool steel
- Number of Holes: ~6–7
- Hole Diameter: ~0.156 mm
- Spray Angle: 150–160°
- Operating Pressure: 1600–1800 bar
- Fuel Compatibility: EN 590 Diesel / B7 Biodiesel blends
- Performance Features: Optimized for smooth idle, precise fuel delivery, low emissions, and long injector life

III. Critical Technician Notes (MUST-DO)

1. Clean Installation: Ultrasonically clean the nozzle before installation.
2. Sealing Components: Replace all O-rings, copper washers, and seals; do not reuse old parts.
3. Injector Mounting: Follow OEM torque and alignment specifications.
4. Post-Installation Testing: Perform leak-back or test-bench spray tests to confirm proper spray pattern and no leaks.
5. Calibration / Coding: Use Mercedes-Benz or BOSCH diagnostic tools if injector coding is required.
6. Fuel Quality Notes: Always use clean, high-quality diesel; replace fuel filters during service.
7. Storage & Handling: Store in a clean, dry environment; protect the nozzle tip from damage.
8. Common Fault Symptoms: Hard start, rough idle, black smoke, loss of power, excessive fuel return flow.