Product Specifications:
The 4P9076 is a heavy-duty, precision-engineered Fuel Injector / Unit Injector (Aftermarket Replacement) designed specifically for Caterpillar 3508, 3512, and 3516 series engines. These massive powerplants are widely utilized in heavy industrial machinery, generator sets, marine vessels, petroleum equipment, and heavy-duty mining trucks (such as the 777B, 785, and 789). Manufactured to verify against rigorous OEM testing protocols to ensure maximum power output, durability, and precise fuel delivery.
📊 Part Number Cross Reference
(Data strictly verified based on application catalog)
| New Part Number | Reman Part Number |
| 7E-3382, 7E3382 | 0R-2921, 0R2921 |
| 4P-9076, 4P9076 | 0R-2921, 0R2921 |
🚛 Fits Applications (Engine & Vehicle)
(Verified application list)
| Make | Machine | Engine and model |
| Caterpillar | Generator Set | 3508, 3512, 3516 |
| Caterpillar | Industrial | 3508, 3512, 3516 |
| Caterpillar | Marine Engine | 3508, 3512, 3516 |
| Caterpillar | Petroleum Engine | 3512 |
| Caterpillar | Track-Type Tractor | 3508 D11N |
| Caterpillar | Truck | 3508 777B, 3512 785, 3516 789 |
| Caterpillar | Vehicular Engine | 3508, 3512, 3516 |
| Caterpillar | Wheel Loader | 3516 994 |
👨🔧 Tech Notes & Installation Guide
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💰 Why Replace the Full Set?
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The Risk: The CAT 3500 series engines are massive V8, V12, or V16 powerplants. Mixing brand-new unit injectors with worn ones causes severe fuel delivery inconsistencies, leading to Cylinder Power Imbalance (Heavy Engine Vibration, Knocking, and Drivetrain Stress).
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The Fix: Take advantage of our Volume Discounts to install a matched set of 8, 12, or 16 units (depending on your specific engine model). This ensures uniform fuel flow and restores smooth factory performance.
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✅ Direct Replacement (No IMA Coding):
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These mechanical unit injectors are precisely calibrated on the test bench to match OEM flow standards. No electronic IMA coding is required for installation, though mechanical valve lash and injector height adjustments are necessary.
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⚠️ Critical Cleaning Step:
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Heavy equipment and marine fuel systems MUST be thoroughly flushed to remove sludge and contamination. Always install new, high-efficiency fuel filters to protect the precision plungers from scoring.
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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 engine running smoothly with our premium Engine Components.
⚖️ Legal Disclaimer
Part numbers, OE numbers, and brand names (e.g., Caterpillar, CAT) 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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