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Caterpillar original Common Rail Fuel Injector 0R-3051 4P-9075 for 3500A Engine 9Y1785, Replacement for OEM 0R-2921, Suitable for Excavator 777B 785 789 original new injector
| Brand Name: | CATERPILLA |
| Model Number: | 0R-3051 |
| MOQ: | 1 |
| Price: | $299-$480 |
| Packaging Details: | Original Packing |
| Payment Terms: | T/T, Western Union |
Caterpillar 0R-3051 common rail injector
,3500A engine fuel injector replacement
,Excavator 777B 785 789 injector
Caterpillar original Common Rail Fuel Injector 0R-3051 4P-9075 for 3500A Engine 9Y1785, Replacement for OEM 0R-2921, Suitable for Excavator 777B 785 789 original new injector
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Fuel Type |
Diesel |
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Condition |
New (Remanufactured options available) |
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Applicable Engine |
CAT 3512A, 3512, 3508, 3508C, 3516 diesel engines |
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Injector Type |
Single-port, high-precision direct diesel injector |
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Quality Standard |
Meets or exceeds OEM specifications |
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Packaging |
— |
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Fuel System |
Diesel direct high-pressure injection |
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OE Number |
OR-3051 (also referenced as 0R-3051 / OR3051 / 0R3051) |
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Brand |
CAT (Caterpillar) |
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Cross Number / Universal Number |
4P-9075 / 7E-3381 / 9Y-4543 |
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Vehicle / Equipment Application |
Generator sets, industrial power systems, marine propulsion engines, petroleum power modules, mining power platforms, heavy machinery |
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Application Type |
Industrial / Marine / Power Generation / Oil & Gas / Mining |
The Caterpillar OR-3051 fuel injector is a precision-machined diesel injector assembly engineered to meet or exceed OEM specifications for Caterpillar 3500 Series high-output diesel engines. Also referenced as 0R-3051, OR3051 and 0R3051, and cross-referenced to 4P-9075, 7E-3381 and 9Y-4543, it fits CAT 3512A, 3512, 3508, 3508C and 3516 engines. It is widely deployed in generator sets, industrial power systems, marine propulsion engines, petroleum power modules and mining power platforms.
The OR-3051 is a single-port, high-precision direct diesel injector. It receives pressurized diesel from the fuel pump, opens a needle valve at calibrated injection pressure, and atomizes fuel through precisely drilled orifices, delivering an optimized spray pattern into the combustion chamber with controlled timing. This ensures enhanced combustion efficiency, reduced soot and emissions, improved fuel economy and stable performance under heavy load conditions.
Built from alloy steel with corrosion protection, the injector offers industrial precision machining, high-pressure capacity and multi-point calibration for consistent performance in harsh environments. During installation, clean the fuel system, use new seals, torque per CAT specifications, bleed the fuel and verify operation under idle and full load. Routine visual checks, periodic filter replacement and scheduled spray and flow testing are recommended. Hard starting, black or white smoke, power loss or uneven idle may indicate injector wear, leakage or blockage.
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Contact Detail:
ADD:Huangpu Machinery City, No.585-A, No.138, Southeast Road, Huangpu District, Guangzhou City,
Guangdong Province Tel:+86 020 88557755
Cellphone:+86 19959162250 WhatsApp:+86 19959162250
Email:2209396088@qq.com
