BLLA 148 P 1347

BOSCH INJECTOR NOZZLE: DLLA148P1347 – FULL SPECIFICATION

I. Key Identification & Compatible Injectors

Nozzle (Injector Tip) P/N: DLLA148P1347
BOSCH MEC / Catalog Number: 0 433 171 838
System Manufacturer: BOSCH Common Rail Diesel Injection System.

Compatible Injector Assembly P/N(s):
- BOSCH Injector References: 0 445 110 159 / 0 445 110 243 / 0 445 110 391 / 0 986 435 088 / 0 986 435 104
- OEM / Vehicle Manufacturer: Opel, Fiat, Alfa Romeo
- Typical Applications (with HP / kW):
• Opel Astra, Vectra, Zafira 1.9 CDTI – 100 kW / 136 HP, 110 kW / 150 HP
• Fiat Bravo / Stilo / Doblo 1.9 JTD – 100 kW / 136 HP, 110 kW / 150 HP
• Alfa Romeo 147 / 156 / GT 1.9 JTD – 100 kW / 136 HP, 110 kW / 150 HP

II. Vehicle / Engine Application & Technical Data

Primary Vehicle Application: 1.9 L CDTI / JTD common-rail diesel engines for compact and mid-size passenger cars.
Engine Type: Inline-4, 1.9 L Diesel (16V), Euro 4 / Euro 5 compliant
Injector Technology: BOSCH Common Rail Solenoid Injector.
Nozzle Type: DLLA148P1347 — precision multi-hole nozzle for high-efficiency atomization and combustion.
Technical Characteristics:
- Material: High-strength tool steel with anti-wear coating
- Number of Holes: ~5–6 (engine variant dependent)
- Hole Diameter: ~0.135 mm (approximate)
- Spray Angle: 148°
- Fuel Compatibility: EN 590 Diesel / B7 Biodiesel blends
- Operating Pressure: 1600–1800 bar typical for 1.9 CDTI / JTD engines
- Performance Features: Optimized for smooth idle, precise fuel delivery, low emissions, and long service life

III. Critical Technician Notes (MUST-DO)

1. Clean Installation: Clean nozzle thoroughly (ultrasonic cleaning recommended) before installation.
2. Sealing Components: Replace copper washers, O-rings, and seals; never 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 verify proper spray pattern and no leaks.
5. Calibration / Coding: Use Opel, Fiat, Alfa Romeo, or BOSCH diagnostic tools if injector coding is required.
6. Fuel Quality Notes: Use clean, high-quality diesel; replace fuel filters during service.
7. Storage & Handling: Store nozzles in a clean, dry environment; protect tip from mechanical damage.
8. Common Fault Symptoms: Hard start, rough idle, black smoke, reduced power, excessive fuel return flow.
9. Long-Term Monitoring: Monitor injector leak-off, idle stability, and fuel return after replacement.