Original diesel Injector for C9.3 ENGINE 417-3013 456-3509 138-8756 456-3579 456-3589 4173013 4563509 original new injector

Engineered for demanding heavy-duty operations, the 138-8756 Fuel Injector is a precision-manufactured common rail injection component designed for the C9.3 diesel engine platform. Cross-referenced with OE numbers 20R-8064, 387-9433, and 10R-7224, this unit delivers OEM-calibrated fuel flow, high-pressure atomization performance, and reliable long-term service in construction, mining, marine, and stationary power generation environments. Each injector is factory tested to ensure consistent spray pattern, precise metering, and direct replacement fit within the cylinder head assembly.

Constructed from hardened alloy steel, the injector body offers excellent corrosion resistance and mechanical durability under sustained high-pressure diesel injection cycles. It is fully compatible with 336 and 340 Excavator Series, 950 and 962 Wheel Loader Series, 140 Motor Grader Series, C9.3 Industrial Engines, Generator Sets, and mining support machinery. Applications extend to marine auxiliary engines, workboats, industrial pumps, compressors, and emergency backup power systems, where consistent combustion efficiency and low emissions are critical for operational stability.

For optimal service life, operators should use ultra-clean diesel fuel, replace filters regularly, drain water separators, and monitor engine diagnostic codes. Installation requires new seals and O-rings, correct torque values per service manual, and verification of injector coding. Recommended diagnostics include return flow testing, electronic scan, fuel rail pressure measurement, spray pattern inspection, and electrical resistance checks. Supplied new with a 12-month warranty.