BLLA 155 G3 S55

DENSO INJECTOR NOZZLE: G3 S55 – FULL SPECIFICATION

I. Key Identification & Compatible Injectors

Nozzle (Injector Tip) P/N: G3 S55
DENSO Catalog Number: 295050-103X
System Manufacturer: DENSO Common Rail Diesel Injection System.

Compatible Injector Assembly P/N(s):
- DENSO Injector Reference: 295050-103X
- OEM / Vehicle Manufacturer: OPEL – 1.6 CDTI engines (81 kW)
- Typical OEM Applications: Opel Astra J, Zafira C, Meriva B with 1.6 CDTI diesel engine.
- Alternative Cross References: Bosch 0 445 110 XXX series (if applicable), OEM-specific numbers.

II. Vehicle / Engine Application & Technical Data

Primary Vehicle Application: OPEL 1.6 CDTI diesel engines for passenger cars and compact vehicles.
Engine Type: 1.6L inline-4 CDTI / Common Rail Diesel engine, 81 kW / 110 HP.
Injector Technology: DENSO Solenoid-Type Common Rail Injector.
Nozzle Type: G3 S55 — precision multi-hole nozzle designed for optimal fuel atomization and combustion efficiency.
Number of Holes: 5–6 (depending on engine variant)
Spray Angle: 155°
Hole Diameter: ~0.125 mm
Material: High-strength, heat-treated tool steel with anti-wear treatment.
Fuel Compatibility: EN 590 Diesel / Biodiesel blends up to B7.
Operating Pressure: ~1600–1800 bar (typical for 1.6 CDTI CR system)
Recommended Fuel Temperature: -20°C to +60°C
Common Fault Symptoms if Nozzle Fails: Rough idle, misfire, black smoke, high fuel consumption, failed emissions test.

III. Critical Technician Notes (MUST-DO)

1. Injector Calibration: After nozzle replacement, always perform injector coding and calibration using DENSO or OEM diagnostic tools.
2. Sealing Components: Replace copper washers and O-rings at every installation; inspect for wear or damage.
3. Injector Bolts: Check mounting bolts for stretch or wear; replace if necessary and torque to manufacturer specifications.
4. Clean Installation: Maintain absolute cleanliness; contamination can lead to premature injector failure.
5. System Verification: Perform leak-back test, pilot injection check, rail pressure verification, and full engine performance test.
6. Storage & Handling: Keep injectors in original packaging until installation; avoid dropping or contaminating nozzle tip.
7. Additional Notes: Ensure fuel lines are clean and free of water or debris; use recommended diesel filter grades.