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Caterpillar original Diesel Common Rail Fuel Injector Steel Sprayer Auto Parts For Excavator Truck 104-3377 Fit CAT Engine Replacement for OEM 0R-8786 After Market Auto Spare original new injector
| Brand Name: | CATERPILLA |
| Model Number: | 104-3377 |
| MOQ: | 1 |
| Price: | $86-$141 |
| Packaging Details: | Original Packing |
| Payment Terms: | T/T, Western Union |
Caterpillar diesel fuel injector for excavator
,CAT engine replacement fuel injector
,OEM 0R-8786 diesel injector
Caterpillar original Diesel Common Rail Fuel Injector Steel Sprayer Auto Parts For Excavator Truck 104-3377 Fit CAT Engine Replacement for OEM 0R-8786 After Market Auto Spare original new injector
Fuel Type | Diesel |
Condition | Original New |
Applicable Engine | CAT 3412 Diesel (425-500 HP); CAT 3412C Diesel (450 HP); CAT 3412B Diesel (400-480 HP) |
Injector Type | Mechanical Diesel Fuel Injector |
Quality Standard | OEM quality, compliant with international diesel engine standards |
Packaging | Not specified |
Fuel System | Not specified |
OE Number | 104-3377 |
Brand | CAT (Caterpillar) |
Cross Number / Universal Number | 0R-43377, 1043377A, 317-43377, 1043377B, 8N-43377 |
Vehicle / Equipment Application | Excavators: Caterpillar 345B, 3412 Series; Generators: Caterpillar D350, D360; Industrial Pumps: Caterpillar P100, P200; Marine Engines: Caterpillar Marine 3412 Series |
Application Type | Construction machinery, industrial power generation, mining equipment, marine diesel engines & offshore equipment, agricultural heavy machinery |
Specially designed as a direct-fit component for Caterpillar 3412 series diesel engines, the 104-3377 industrial fuel injector is a premium OEM-quality replacement part for heavy equipment fleets and maintenance service providers. It is compatible with CAT 3412 (425–500 HP), 3412B (400–480 HP) and 3412C (450 HP) diesel engines, and supports multiple cross-reference numbers including 0R-43377 and 1043377A to simplify parts sourcing. It fits equipment ranging from Caterpillar excavators and generators to industrial pumps and marine 3412 engine setups.
Built with high-grade steel alloy and high-precision components, this mechanical diesel injector operates at fuel pressures between 1500 and 2500 bar and features a multi-hole spray pattern for optimal fuel atomization. It is precision-tested to deliver consistent performance across operating temperatures from -40°C to 120°C, ensuring complete combustion, reduced emissions and stable power output even in harsh, high-stress working environments. It complies with international diesel engine standards and offers a rated service lifespan of 5,000 to 10,000 operating hours.
For reliable installation, the injector requires 35–40 Nm of mounting bolt torque, OEM-approved seals and gaskets, and post-installation fuel system calibration to prevent damage and ensure proper injection timing. It follows clear maintenance protocols including 500-hour inspection intervals, use of ASTM D975 certified diesel and regular fuel filter cleaning to reduce fault risks. Suitable for global construction, mining, power generation, marine and agricultural heavy machinery applications, it helps operators cut unplanned downtime and lower long-term operational costs.
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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
