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
