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Fuel Injector 4077076 for Cummins QSK23 Engine
Key Information
Part Number: 4077076 ï¼4088429 ï¼4088431 ï¼4902828 ï¼ 4326639 ï¼ 4326640
Engine Make: CUMMINS
Inspection Report: Yes
Warranty: 12 Months
Supply Ability: In stock
Payment Way: Paypal, Western Union, Visa, Mastercard, T/T
Details: One model in a neutral box or specific box required by clients.
The Fuel Injector 4077076 is a replacement part designed for the Cummins QSK23 engine, commonly used in heavy-duty applications such as construction equipment, mining trucks, and power generation.
1. Precision Fuel Delivery
High-Pressure Injection: Designed to work with Cummins’ high-pressure common rail (HPCR) or unit injection system (depending on QSK23 variant).
Accurate Metering: Delivers the exact fuel quantity needed for efficient combustion, improving power and fuel economy.
2. Durable Construction
Robust Materials: Made from hardened steel and advanced alloys to withstand high pressures (up to 30,000+ psi in some systems).
Corrosion-Resistant Coatings: Protects against sulfur and contaminants in diesel fuel.
3. Optimized Spray PatternMulti-Hole Nozzle Design: Ensures fine atomization for complete combustion, reducing emissions (soot & NOx).
Consistent Flow Rate: Maintains engine performance across all operating conditions.
4. Compatibility & Fitment
Engine Model: Spcifically designed for Cummins QSK23 (verify exact engine serial number for compatibility).
OEM Equivalent: Meets or exceeds original Cummins specifications (if aftermarket, ensure it’s from a reputable supplier).
5. Performance Impact
Improved Fuel Efficiency: Precision injection reduces wasted fuel.
Lower Emissions: Helps meet Tier 2/Tier 3 and Stage IIIA standards.
Smooth Engine Operation: Prevents misfires, knocking, and uneven power delivery.
6. Common Failure Signs
⚠ Symptoms of a Failing Injector 4077076:
Hard starting or rough idle
Excessive black/white smoke
Loss of power or fuel economy
Cylinder misfires (diagnostic trouble codes like P0263 – Cylinder 1 Contribution/Balance)
7. Maintenance Tips
✔ Use Clean Fuel: Contaminants can clog injector nozzles.
✔ Regular Inspections: Check for leaks or carbon buildup.
✔ Replace in Sets: If one injector fails, others may be near failure (especially in high-hour engines).
OEM Cross Reference:
4077076 ,4088429 ,4088431 ,4902828 ,4326639 ,4326640, 6560-11-1114 ,6560-11-1414 ,4902827
| Parameter | Specification |
|---|---|
| Part Number | 4077076 |
| Compatible Engine | Cummins QSK23 (verify exact engine serial number) |
| Injector Type | Electro-hydraulic or Common Rail (depends on QSK23 variant) |
| Operating Pressure | 20,000 – 30,000 psi (varies by system) |
| Nozzle Type | Multi-hole (e.g., 6–8 holes for optimized spray pattern) |
| Flow Rate | Varies by calibration; typically ~300–500 cc/min (at specified test pressure) |
| Voltage/Resistance | 12V or 24V system; solenoid resistance ~0.5–2 Ω (check service manual) |
| Thread Size/Seat Type | M12x1.5 or proprietary Cummins fitting (torque specs critical) |
| Material | Hardened steel body, tungsten carbide nozzle |
| Emissions Compliance | Meets Tier 2/Tier 3, Stage IIIA standards (when paired with engine calibration) |
| Service Life | 8,000–15,000 hours (depends on fuel quality and maintenance) |
| Weight | ~1.5–2.5 kg (varies by design) |
