BLLA 148 P 1221

BOSCH INJECTOR NOZZLE: DLLA148P1221 – FULL SPECIFICATION

I. Key Identification & Compatible Injectors

Nozzle (Injector Tip) P/N: DLLA148P1221
BOSCH MEC / Catalog Number: 0 433 171 771
System Manufacturer: BOSCH Common Rail Diesel Injection System.

Compatible Injector Assembly P/N(s):
- BOSCH Injector Reference: 0 445 110 111
- OEM / Vehicle Manufacturer: FIAT diesel engines
- Typical OEM Applications: Fiat Punto, Panda, 500, Doblo, Fiorino and other 1.3–2.0 L diesel models.

II. Vehicle / Engine Application & Technical Data

Primary Vehicle Application: FIAT 1.3–2.0 L diesel engines, passenger cars and light commercial vehicles.
Engine Type: Inline-4 diesel engines with Common Rail injection.
Injector Technology: BOSCH Solenoid-Type Common Rail Injector.
Nozzle Type: DLLA148P1221 — precision multi-hole nozzle for optimized atomization.
Number of Holes: 7
Spray Angle: 150°
Hole Diameter: ~0.140 mm
Material: High-strength, heat-treated tool steel.
Fuel Compatibility: EN 590 Diesel / Biodiesel blends up to B7.

III. Critical Technician Notes (MUST-DO)

1. Injector Calibration: After nozzle replacement, perform injector coding and calibration (IMA/ISA) via diagnostic tools.
2. Sealing Components: Replace copper washers and O-rings at every installation.
3. Injector Bolts: Use new stretch bolts — never reuse old bolts.
4. Clean Installation: Maintain absolute cleanliness during assembly; contamination can cause premature injector failure.
5. System Verification: Perform leak-back test, pilot injection calibration, rail pressure check, and engine performance verification after installation.