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Fuel Injectors 4940589 for CUMMINS 5.9
Key Information
Part Number: 0445120255 ,0986435503, 5263318 , 3949619 , 4940589
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 Cummins fuel injector with part number 4940589 is a genuine OEM component primarily used in heavy-duty diesel engines, most notably in the Cummins ISX15 (2002-2017) and possibly QSX15 applications. Below is a detailed breakdown based on available data:
4940589 Key Specifications & Details
Type:
Likely an electronic unit injector (EUI) or high-pressure common rail (HPCR) injector, depending on the engine year and configuration.
Designed for precise fuel delivery and combustion efficiency.
Compatible Engines:
ISX15 (2002–2017): Used in trucks like Kenworth T680, Peterbilt 389/579, Freightliner Cascadia.
QSX15: Industrial and marine applications.
Confirm compatibility using the engine serial number (ESN) via Cummins QuickServe.
Critical Features:
Pressure Rating: Typically operates at 30,000+ PSI (HPCR models).
Electrical Connector: 4-pin or 6-pin solenoid design (varies by model).
Nozzle Type: Multi-orifice for optimal spray pattern.
Common Symptoms of Failure:
Hard starting, misfires, or rough idle.
Excessive black/white smoke.
Increased fuel consumption.
Fault codes (e.g., Cummins fault codes 221, 235, or 238 for injector circuit issues).
Rsolid is a professional diesel fuel injector manufacturer provides high quality and durable diesel fuel injector replaements for different brands of engines or produce fuel injector according to your request. If you are looking for diesel fuel injector or OEM engine fuel injector, feel free to contact us .
| Parameter | Specification |
|---|---|
| Part Number | 4940589 (OEM Genuine Cummins) |
| Application | Primarily for Cummins ISX15 (2002–2017) and QSX15 engines |
| Injector Type | Likely Electronic Unit Injector (EUI) or High-Pressure Common Rail (HPCR) |
| Operating Pressure | 30,000–37,000 PSI (HPCR models) |
| Voltage/Resistance | Solenoid resistance: 0.5–2.0 Ohms (varies by model; verify with ESN) |
| Connector Type | 4-pin or 6-pin (depends on engine year) |
| Flow Rate | Not publicly listed (Cummins QSOL required) |
| Nozzle Orifices | Multi-hole design (exact count varies; typically 6–8 holes) |
| Torque Specification | Hold-down bolt: 30–35 ft-lbs (ISX15; confirm via QSOL) |
| Seal Type | Copper crush washer (must be replaced during installation) |
| Trim Code Requirement | Automatic correction and matching |
| Common Failure Codes | Fault codes 221, 235, 238 (injector circuit/performance issues) |
| Weight | ~2.5–3.5 lbs (approximate) |
