BSLA 143 P 970

BOSCH INJECTOR NOZZLE: DSLA143P970 – FULL SPECIFICATION

I. Key Identification & Compatible Injectors

Nozzle (Injector Tip) P/N: DSLA143P970
BOSCH MEC / Catalog Number: 433175271
System Manufacturer: BOSCH Heavy-Duty Common Rail Injection System.

Compatible Injector Assembly P/N(s):
- BOSCH Injector Reference: 0 445 120 007
- OEM / Vehicle Manufacturer: IVECO (Medium- and Heavy-Duty diesel applications)
- Engine Family: IVECO TECTOR Euro 3 / Euro 4 / Euro 5 variants
- Typical Vehicle Applications: Eurocargo trucks, Daily 3.0 HDI, Bus applications, light- to medium-duty commercial vehicles.

II. Vehicle / Engine Application & Technical Data

Primary Vehicle Application: IVECO Eurocargo, Daily 3.0, and Tector-series engines.
Engine Type: 3.9L – 5.9L IVECO Tector Common Rail Diesel engines.
Injector Technology: BOSCH Heavy-Duty Solenoid Injector
Nozzle Type: DSLA143P970 — robust multi-hole nozzle designed for high-pressure commercial vehicle applications.
Hole Diameter: ~0.128–0.140 mm (engine variant dependent)
Number of Holes: 6
Spray Angle: 143° (DSLA-series standard heavy-duty angle)
Material: Heat-treated, wear-resistant alloy tool steel designed for long service in high-load duty cycles.
Fuel Compatibility: EN 590 Diesel / Biodiesel blends up to B7 / suitable for long-haul, high-load operation.
Operating Pressure: 1600–1800 bar (depending on Tector engine generation)
Emission Standard Compatibility: Euro 3 – Euro 5
Common Failure Symptoms: loss of torque, black/white smoke, injector knock, long crank, excessive return flow.

III. Critical Technician Notes (MUST-DO)

1. Injector Calibration: After installation, perform coding & calibration with IVECO EASY diagnostic system.
2. Sealing Components: Always install new copper washers and new O-rings—old seals cause compression leakage.
3. High-Torque Installation: Injector clamp bolts must be installed according to IVECO torque-angle specifications; bolts may require replacement if stretched.
4. Clean Installation: Ensure injector seat re-surfacing if carbon buildup is present; even micro-pitting will cause blow-by.
5. System Verification: Perform leak-back test, rail pressure balance, pilot correction values, and full-load test after replacement.
6. Fuel Quality Notes: Tector engines are highly sensitive to contaminated diesel; always replace fuel filter and verify water separator.
7. Extended Life Recommendation: Use OEM-spec injector return hoses; aftermarket hoses frequently leak under high temperature.