BLLA 142 P 1321+

BOSCH INJECTOR NOZZLE: DLLA142P1321+ – FULL SPECIFICATION

I. Key Identification & Compatible Injectors

Nozzle (Injector Tip) P/N: DLLA142P1321+
BOSCH MEC / Catalog Number: 433171822
System Manufacturer: BOSCH Common Rail Diesel Injection System.

Compatible Injector Assembly P/N(s):
- BOSCH Injector Reference: 0 445 110 165 / 0 445 110 244
- OEM / Vehicle Manufacturer: FIAT, ALFA ROMEO, OPEL
- Typical Applications (with HP / kW):
• FIAT Ducato 1.9 L Diesel – 100–130 HP / 74–96 kW
• Alfa Romeo 1.9 L JTD Diesel – 105–115 HP / 77–85 kW
• Opel Combo / Vivaro 1.9 L Diesel – 100–120 HP / 74–88 kW

II. Vehicle / Engine Application & Technical Data

Primary Vehicle Application: 1.9 L common-rail diesel engines in small vans, passenger cars, and light commercial vehicles.
Engine Type: Inline-4 / 1.9 L Diesel, Euro 3 / Euro 4 compliant
Injector Technology: BOSCH Solenoid-Type Common Rail Injector.
Nozzle Type: DLLA142P1321+ — precision multi-hole nozzle for uniform atomization and optimal combustion.
Technical Characteristics:
- Material: High-strength, heat-treated tool steel
- Fuel Compatibility: EN 590 Diesel / B7 Biodiesel blends
- Performance Features: Optimized for fuel efficiency, smooth idle, low emissions, and long service life under typical urban and highway loads.

III. Critical Technician Notes (MUST-DO)

1. Clean Installation: Clean the nozzle thoroughly (ultrasonic cleaning recommended) before installation.
2. Sealing Components: Replace O-rings, copper washers, and other sealing parts.
3. Injector Mounting: Follow OEM torque and alignment specifications strictly.
4. Post-Installation Testing: Perform leak-back test and verify spray pattern on a test bench.
5. Calibration / Coding: If required, use OEM diagnostic tools to encode or calibrate the injector.
6. Fuel Quality Notes: Use clean diesel; replace fuel filters when servicing.
7. Storage & Handling: Keep nozzles in a dry, dust-free environment; avoid tip damage.
8. Common Fault Symptoms: Rough idle, hard start, black smoke, loss of power, or increased fuel return flow.