Product Specifications:
The 3200680 is a heavy-duty, precision-engineered Common Rail Diesel Fuel Injector (Aftermarket Replacement) designed specifically for Caterpillar C4.4 and C6.6 engines, as well as the compatible Perkins 1100 Series. These highly efficient powerplants are the driving force behind a massive array of compact and mid-sized construction equipment, including Backhoe Loaders (430E, 450E), Wheeled Excavators (M315D, M322D), Telehandlers, and Vibratory Compactors. Manufactured to verify against rigorous OEM testing protocols to ensure optimal fuel atomization, emissions compliance, and maximum torque output.
📊 Part Number Cross Reference
(Data strictly verified based on application catalog)
| New Part Number | Reman Part Number |
| 320-0680, 3200680 | 10R-7672, 10R7672 |
| 306-9380, 3069380 | 2645A747R |
| 292-3780, 2923780 | – |
| 2645A747, 2645A734, 2645A718 | – |
🚛 Fits Applications (Engine & Vehicle)
(Verified application list)
| Make | Machine / Model | Engine Code |
| Caterpillar | Backhoe Loader: 430E, 450E | C4.4 |
| Caterpillar | Wheeled Excavator: M313D, M315D, M316D, M318D, M322D | C4.4 / C6.6 |
| Caterpillar | Telehandler: TH336C, TH406C, TL943C, TL1055C, TL1255C | C3.4 / C4.4 |
| Caterpillar | Asphalt Paver: AP500E, AP555E, BG500E, BG555E, CB54B | C4.4 |
| Caterpillar | Compactor (Pneumatic / Vibratory): CW34, CB54, CS54 | C4.4 |
| Caterpillar | Load Haul Dump: R1300G | C6.6 |
| Caterpillar | Generator Set & Industrial Engine | C4.4 / C6.6 |
| Perkins | Generator Set: 1100 Series | 1106D-E66TA |
👨🔧 Tech Notes & Installation Guide
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💰 Why Replace the Full Set?
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The Risk: Mixing a brand-new common rail injector with old, worn units causes severely uneven fuel delivery. This leads to Cylinder Power Imbalance (Engine Vibration, Drivetrain Stress, and Increased Fuel Consumption).
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The Fix: Take advantage of our Volume Discounts to install a matched set of 4 units (for C4.4) or 6 units (for C6.6). This ensures uniform fuel pressure across the rail and restores smooth factory performance.
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✅ Calibration & Installation:
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These injectors are pre-calibrated on the test bench to match OEM flow standards. (Note: Depending on your specific ECM software version, entering the unique injector trim code into the system may be required during installation for optimal fuel mapping).
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⚠️ Critical Cleaning Step:
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The entire high-pressure fuel delivery system (tank, lines, and rails) MUST be thoroughly flushed to remove microscopic debris. Always install a brand-new, high-efficiency fuel filter to protect the precision control valves 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, Perkins) 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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