G3 S4

DENSO INJECTOR NOZZLE: G3 S4 – FULL SPECIFICATION

I. Key Identification & Compatible Injectors

Nozzle (Injector Tip) P/N: G3 S4
Alternate / Cross Reference: HRD640 / 295050-0120 / 295900-0160 / DCRI200410 / DCRI300120
System Manufacturer: DENSO Common Rail Diesel Injection System.

Compatible Injector Assembly P/N(s):
- DENSO Injector Reference: HRD640 / 295050-0120 / 295900-0160 / DCRI200410 / DCRI300120
- OEM / Vehicle Manufacturer: Citroën, Mitsubishi
- Typical Applications (with HP / kW):
• Citroën C4 1.8 HDi – 150 HP / 110 kW
• Mitsubishi L200 / Pajero 1.8 DI-D – 150 HP / 110 kW
• Mitsubishi 2.2 DI-D – 115 HP / 85 kW

II. Vehicle / Engine Application & Technical Data

Primary Vehicle Application: Citroën and Mitsubishi common-rail diesel passenger cars and light commercial vehicles.
Engine Type: Inline-4, 1.8 L / 2.2 L Common Rail Diesel, Euro 4 / Euro 5 compliant
Injector Technology: DENSO Common Rail Solenoid Injector.
Nozzle Type: G3 S4 — precision multi-hole nozzle for proper atomization and combustion.
Technical Characteristics:
- Material: High-strength tool steel
- Fuel Compatibility: EN 590 Diesel / B7 Biodiesel blends
- Performance Features: Optimized fuel spray pattern for reduced emissions, smooth idle, and improved efficiency

III. Critical Technician Notes (MUST-DO)

1. Clean Installation: Thoroughly clean the nozzle (ultrasonic cleaning recommended) before installation.
2. Sealing Components: Always replace O-rings, copper washers, and seals; do not 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 ensure proper spray pattern and no leaks.
5. Calibration / Coding: Use Citroën, Mitsubishi, or DENSO 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 in a clean, dry environment; avoid mechanical damage to the nozzle tip.
8. Common Fault Symptoms: Hard start, black smoke, rough idle, loss of power, excessive fuel return flow.