BLLA 150 P 1437

BOSCH INJECTOR NOZZLE: DLLA150P1437 – FULL SPECIFICATION

I. Key Identification & Compatible Injectors

Nozzle (Injector Tip) P/N: DLLA150P1437
BOSCH MEC / Catalog Number: 433171889
System Manufacturer: BOSCH Common Rail Diesel Injection System.

Compatible Injector Assembly P/N(s):
- BOSCH Injector References: 0 445 110 183, 0 445 110 316, 0 445 110 381
- OEM / Vehicle Manufacturer: FIAT, ALFA ROMEO, LANCIA – 1.3 MJ MultiJet engines
- Typical Applications:
• Fiat Panda / 500 / Punto / Doblo / Fiorino
• Alfa Romeo MiTo / Giulietta 1.3 MJ
• Lancia Ypsilon 1.3 MJ

II. Vehicle / Engine Application & Technical Data

Primary Vehicle Application: 1.3 L MultiJet II diesel engines for small passenger cars and light commercial vehicles.
Engine Type: 1.3 L inline-4 MultiJet diesel (Euro 5 / Euro 6).
Injector Technology: BOSCH Solenoid-Type Common Rail Injector.
Nozzle Type: DLLA150P1437 — high-precision multi-hole nozzle for optimal atomization, low emissions, and efficient combustion.
Technical Characteristics:
- Number of Holes: 7
- Hole Diameter: ~0.130 mm
- Spray Angle: 150°
- Operating Pressure: 1600–1800 bar
- Material: High-strength, heat-treated tool steel with anti-wear coating
- Fuel Compatibility: EN 590 Diesel / Biodiesel blends up to B7
- Emission Standard Compliance: Euro 5 / Euro 6
- Performance Features: Optimized for cold start, reduced noise, low NOx emissions, and enhanced fuel economy.
Common Fault Symptoms:
- Hard cold start
- Reduced acceleration / power
- Black smoke
- Excessive fuel return flow
- Misfire or rough idle

III. Critical Technician Notes (MUST-DO)

1. Injector Coding: Always perform IMA/ISA coding using OEM diagnostic tools after replacement.
2. Sealing Components: Replace all copper washers and O-rings at every installation; do not reuse old seals.
3. Injector Bolts: Use new clamp/stretch bolts; torque-angle installation is mandatory.
4. Clean Installation: Maintain absolute cleanliness; MultiJet injectors are highly sensitive to contamination.
5. System Verification: Conduct leak-back test, pilot injection calibration, rail pressure verification, and injector balance check.
6. Fuel System Notes: Replace fuel filter during service and ensure water-free, clean diesel.
7. Seat Reconditioning: Inspect and clean injector seat if carbon deposits are present to prevent blow-by and misfire.