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Caterpillar original Common Rail Fuel Injector 10R-7939 Replacement for Caterpillar Engine, Diesel Excavator Parts Cross Reference 10R-7672, 10R-7669, 321-0990 original new injector
| Brand Name: | CATERPILLA |
| Model Number: | 10R-7939 |
| MOQ: | 1 |
| Price: | $75-$168 |
| Packaging Details: | Original Packing |
| Payment Terms: | T/T, Western Union |
Caterpillar common rail fuel injector
,10R-7939 diesel excavator injector
,CAT engine replacement injector 10R-7672
Caterpillar original Common Rail Fuel Injector 10R-7939 Replacement for Caterpillar Engine, Diesel Excavator Parts Cross Reference 10R-7672, 10R-7669, 321-0990 original new injector
Fuel Type | Diesel |
Condition | New (Original / OEM Replacement) |
Applicable Engine | CAT C6.4, CAT C6.6, CAT C6.4 ACERT, CAT C6.6 ACERT; Perkins 1106D-E66TA, Perkins 1106D-E70TA and other 1106 series industrial diesel engines |
Injector Type | Common Rail Fuel Injector |
Quality Standard | Manufactured to OEM specifications; 100% performance tested (injection quantity, return flow, leakage, response time, spray pattern, solenoid resistance) |
Packaging | Available upon request |
Fuel System | High-Pressure Common Rail System (operating pressure up to 2000 bar) |
OE Number | 10R-7939 / 10R7939 |
Brand | CAT (Caterpillar) |
Cross Number / Universal Number | 320-0688, 3200688, 321-1080, 3211080, 293-9580, 2939580, 289-7500, 282-0480, 276-8280, 266-4434, 257-2500, 2645A742, 2645A753, 2645A747, 2645A708, 2645A704, 2645A703, 2645A473 |
Vehicle / Equipment Application | CAT D6N, D6N XL, D6N LGP, 930H, 928HZ, 953D, IT28G; industrial power units and generator applications |
Application Type | Construction, mining, power generation, agriculture, marine, and industrial applications |
Engineered for CAT C6.4 and C6.6 engine platforms, the Caterpillar 10R-7939 common rail fuel injector is manufactured to OEM specifications for demanding diesel applications. Supporting high-pressure common rail systems with operating pressure up to 2000 bar, it is a reliable replacement for Caterpillar construction equipment, industrial power units, generator sets, mining machinery, and Perkins-powered applications. Cross references including 320-0688, 321-1080, 293-9580, 289-7500, and 2645A742 simplify sourcing for distributors and fleet maintenance programs.
In operation, high-pressure fuel from the common rail is delivered to the injector, where the ECU electronically controls the solenoid for precise opening and closing of the needle valve. Fuel is atomized through multiple precision nozzle holes into microscopic droplets, producing an optimized spray pattern. The result is precise fuel metering, improved combustion efficiency, reduced fuel consumption, lower exhaust emissions, enhanced cold start performance, improved engine responsiveness, and extended engine service life.
Built from hardened alloy steel with micron-level machining tolerances, the 10R-7939 is designed for fuel pressures exceeding 1800 bar and features protective surface treatments for corrosion resistance in harsh mining, construction, marine, and industrial environments. Every unit undergoes 100% performance testing covering injection quantity, return flow, leakage, response time, spray pattern, and solenoid resistance, ensuring direct OEM fitment without modification. For best results, install with a new copper washer, bleed the fuel system after installation, and perform injector coding and calibration where required.
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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
