6560-11-1414 / 4902828 | Cummins QSK23 & Komatsu SAA6D170E-3 Fuel Injector

This diesel fuel injector, identified by OEM cross-reference 6560-11-1414 and 4902828, represents a critical component within the high-pressure common rail fuel delivery architecture utilized by Cummins QSK23 and Komatsu SAA6D170E-3 industrial power plants. Engineered to exacting tolerances, this injector assembly facilitates the precise, electronically governed fuel atomization required for stable combustion in heavy-duty mining, marine, and power generation applications where downtime carries substantial operational cost.

This common rail injector extends beyond a single engine family, serving a diverse fleet of industrial machinery across North American, European, and Australian operational environments. Primary deployments include Komatsu SA6D170E-3 and SAA6D170E-3 diesel engines found in large excavators, wheel loaders, and rigid haul trucks. The same part number is equally specified for Cummins QSK23 and QSX23 engine platforms, which see service in mining haul fleets, offshore support vessels, and standby power generation units. Repair facilities supporting mixed Komatsu-Cummins fleets will find this injector's cross-application compatibility particularly valuable for reducing inventory complexity without compromising fitment accuracy. Fleet managers maintaining K38, QSK19, or QSK60 assets should note that while this injector shares certain system-level architecture, the 6560-11-1414 specification is calibrated specifically for the 23-liter displacement and its corresponding combustion chamber geometry.

Successful replacement of this diesel injector demands adherence to common rail system hygiene protocols that differ fundamentally from mechanical injection servicing. Before removal, technicians must ensure the high-pressure accumulator has fully depressurized-residual rail pressure can exceed 1,500 bar even minutes after shutdown. The injector bore, copper sealing washer, and hold-down clamp should be inspected for carbon tracking or deformation, as imperfect sealing at the combustion face leads to compression loss and subsequent injector seizure. Electronic trim codes or calibration values may require programming into the ECU post-installation, depending on the host engine's management strategy; failure to update these parameters can trigger cylinder imbalance codes, rough idle, or derate events. Always verify the injector solenoid resistance against OE specifications before installation, and never reuse high-pressure inlet fittings where evidence of fretting or galling exists.

In the current diesel common rail aftermarket, injector replacement decisions increasingly hinge on total cost of ownership rather than initial part price alone. A failed QSK23 injector that leaks excessively into the return circuit or fails to achieve commanded rail pressure does not merely cause rough running-it drives excessive fuel dilution of engine oil, accelerates high-pressure pump wear, and can trigger DPF overloading through incomplete combustion. For repair shops and diesel parts distributors serving industrial clients, stocking the 6560-11-1414 / 4902828 cross-reference addresses a recurring demand point across Komatsu and Cummins platforms, reducing the need for multi-brand sourcing and enabling faster turnaround on equipment that typically operates under production-critical scheduling constraints. The economic case for OEM-specification replacement over low-cost alternatives rests on the injector's role as a calibration-sensitive component: minor variances in needle lift, spray pattern, or solenoid response time translate directly into combustion instability that downstream sensors cannot fully correct.

Q1: Does this injector come pre-calibrated, or does the trim code need to be programmed after installation?
A: Most QSK23 and SAA6D170E-3 applications require entering the injector's trim code into the ECU using a compatible diagnostic platform. Failing to program the correct value can result in cylinder-to-cylinder fuel imbalance and persistent fault codes.

Q2: Can I mix this part number with 4902827 on the same engine?
A: While 4902827 shares architectural lineage, the calibration data and flow characteristics are not interchangeable across all build configurations. For full-set replacement, order matched quantities to prevent combustion variance that the ECU cannot compensate for.

Q3: What's the most common failure mode for 6560-11-1414 in mining applications?
A: Internal fuel leakage past the control valve seat is the dominant failure, driven by contaminated fuel and thermal cycling. Symptoms include hard starting, black smoke under load, and elevated fuel return flow.

Q4: Is a core charge or return policy typical for this injector at the wholesale level?
A: Many distributors offer core credit programs for rebuildable units, though the credit value varies by condition. Confirm core acceptance criteria before shipping returns to avoid deductions.

Q5: How should I advise customers on shelf life for stocked injectors?
A: Store in sealed packaging with desiccant away from humidity and temperature extremes. Internal corrosion from moisture ingress can seize the control valve even on unused units, rendering them non-functional.

Q6: What fuel filtration specification protects this injector's service life?
A: 2-micron absolute filtration at the final stage is strongly recommended. Water separation and fuel quality monitoring are equally critical, as water contamination is a leading cause of solenoid and nozzle erosion in common rail systems.