original 4563493 Diesel Common Rail Injector 20R-5036 363-0493 460-8213 for C9.3 Engine 336E Excavator new injector original new injector

Engineered exclusively for C9.3 and C9.3B diesel engines, the 456-3493 fuel injector delivers OEM-standard performance within electronically controlled high-pressure common rail fuel systems. Manufactured with hardened alloy steel construction and precision-machined nozzle assemblies, this injector ensures high-precision fuel atomization, accurate fuel metering, and reliable operation under demanding industrial loads. It is fully compatible with factory calibration parameters, supporting improved fuel economy, reduced emissions, lower particulate matter, and better cold-start performance across the C9.3 engine platform.

This injector serves as a direct replacement and interchange for part numbers 20R-5036, 363-0493, 367-4293, and 20R-1318, allowing seamless integration without modifications. It is widely applied in construction equipment such as excavators (336E, 336F) and wheel loaders (966K, 972K), mining trucks and drilling machinery, diesel generator sets for power generation, commercial marine propulsion systems, and large agricultural machinery. Each unit undergoes industrial quality control and factory calibration to maintain precise injection pressure, consistent spray patterns, and long service life in harsh operating environments.

Proper installation requires cleaning the injector seat, replacing the sealing washer and O-rings, bleeding the fuel system, verifying injector coding, and performing ECM diagnostics. Routine maintenance includes using clean diesel fuel, replacing fuel filters at recommended intervals, avoiding contaminated fuel, inspecting fuel rail pressure, and conducting periodic injector testing. Common fault symptoms such as hard starting, engine misfire, black smoke, low power, rough idle, fuel leakage, high fuel consumption, or ECM fault codes can often be traced to nozzle wear, calibration issues, seal damage, or electrical faults, making timely replacement with a calibrated OEM-specification injector essential for sustained engine durability.