BLLA 148 P 1660

BOSCH INJECTOR NOZZLE: DLLA148P1660 – FULL SPECIFICATION

I. Key Identification & Compatible Injectors

Nozzle (Injector Tip) P/N: DLLA148P1660
BOSCH MEC / Catalog Number: 433172019
System Manufacturer: BOSCH Common Rail Diesel Injection System.

Compatible Injector Assembly P/N(s):
- BOSCH Injector References: 0 445 110 299, 0 445 110 308, 0 445 110 327
- OEM / Vehicle Manufacturer: FIAT – 1.3 MJ MultiJet engines
- Typical Applications:
• Fiat Panda 1.3 MJ II
• Fiat 500 / 500L / 500X 1.3 MJ II
• Fiat Punto / Doblo / Fiorino 1.3 MJ II

II. Vehicle / Engine Application & Technical Data

Primary Vehicle Application: FIAT 1.3 L MultiJet II diesel engines for 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: DLLA148P1660 — precision multi-hole nozzle for optimal atomization and combustion efficiency.
Technical Characteristics:
- Number of Holes: 7
- Hole Diameter: ~0.132 mm
- Spray Angle: 148°
- Operating Pressure: 1600–1800 bar
- Material: High-strength, heat-treated tool steel with anti-wear coating
- Fuel Compatibility: EN 590 Diesel / B7 Biodiesel blends
- Emission Standard Compliance: Euro 5 / Euro 6
- Performance Features: Optimized for cold start, low NOx emissions, low noise, and improved fuel economy.
Common Fault Symptoms:
- Hard cold start
- Rough idle / misfire
- Reduced acceleration / torque
- Black smoke
- Excessive fuel return flow

III. Critical Technician Notes (MUST-DO)

1. Injector Coding: Always perform IMA/ISA coding using OEM diagnostic tools after nozzle replacement.
2. Sealing Components: Replace all copper washers and O-rings at each 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; ensure fuel is free of water and debris.
7. Seat Reconditioning: Inspect and clean injector seat if carbon deposits are present to prevent blow-by and misfire.