Product Specifications:
The 4026222 is a heavy-duty, precision-engineered CELECT Electronic Unit Injector (EUI) (Aftermarket Replacement) designed specifically for the highly dependable Cummins M11, ISM11, and QSM11 (11L) 6-cylinder diesel engines. These robust powerplants are the driving force behind North American commercial trucking, heavy construction machinery, and industrial power generation. Manufactured to verify against rigorous OEM testing protocols to restore massive pulling torque, ensure efficient fuel atomization, and maximize fuel economy under heavy payloads. Designed for a direct fit with no complex ECU programming required.
📊 Part Number Cross Reference
(Data verified via global catalog search – Extensive Interchangeability)
| Original Equipment (Cummins) | Alternate / Reman Ref |
| 4026222 | 4026222RX, 4026222PX |
| 4903472 | 4903472RX, 4903472PX |
| 4061851 | 4061851RX, 4061851PX |
🚛 Fits Applications (Engine & Vehicle)
(Verified application list)
| Make | Model / Application | Engine Size | Year | Engine Code & Specs |
| Cummins | Heavy Duty Trucks | 11L | Various | M11, ISM11, CELECT / CELECT Plus |
| Cummins | Construction / Ag | 11L | Various | QSM11, CELECT |
| Cummins | Generator Sets / Marine | 11L | Various | M11, QSM11 |
👨🔧 Tech Notes & Installation Guide
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💰 Why Replace the Full Set?
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The Risk: Mixing a brand-new CELECT unit injector with old, worn units on an 11L Cummins engine causes severely uneven fuel delivery. This leads to rough idling, destructive drivetrain vibration, loss of pulling power on steep grades, and increased fuel consumption.
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The Fix: Take advantage of our Volume Discounts to install a matched set of 6 units. This ensures uniform injection pressure across all cylinders and restores the smooth, legendary factory horsepower your truck or equipment demands.
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✅ Direct Replacement (No Coding Required):
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These aftermarket CELECT unit injectors are precision-calibrated on the test bench to deliver optimal flow rates right out of the box. No IMA coding or ECU programming is required—simply install, properly adjust the mechanical overhead valve/injector lash to Cummins specifications, and start the engine. Perfect for quick and hassle-free fleet maintenance.
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⚠️ Critical Cleaning Step:
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Commercial trucks and earthmovers operate in harsh environments. The entire fuel delivery system MUST be thoroughly flushed prior to installation. Always install a brand-new fuel filter to protect the precision plunger inside the new injector from microscopic debris.
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🔍 Explore More Heavy Duty Parts:
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Looking for more options? Browse our complete selection of Fuel Injectors.
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Keep your fleet running smoothly with our premium Engine Components.
⚖️ Legal Disclaimer
Part numbers, OE numbers, and brand names mentioned above are for reference and identification purposes only. This product is a compatible aftermarket replacement part and is NOT manufactured, sponsored, or affiliated with the original equipment manufacturers.










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