original 456-3493 Common Rail Fuel Injector 4563493 20R-5036 Diesel Engine Injection Valve for C9.3 336E 966K 627K 637K Excavator Tractor Replacement for OEM original new injector

Engineered for demanding heavy-duty diesel applications, the 456-3493 Common Rail Fuel Injector delivers precise fuel metering and reliable high-pressure atomization for C9.3 and C9.3B engines. Manufactured to OEM standards, this injector assembly is fully interchangeable with cross references 20R-5036, 363-0493, 367-4293, and 20R-1318, providing a direct-fit replacement solution for construction, mining, and power generation fleets worldwide.

Constructed from hardened alloy steel with corrosion-resistant treatment, the 456-3493 injector withstands extreme rail pressures while maintaining consistent spray geometry over long service intervals. Each unit undergoes factory calibration and strict industrial quality control to ensure precise fuel delivery, improved fuel economy, reduced particulate emissions, better cold-start performance, and enhanced engine durability. The high-precision nozzle assembly minimizes common failure modes such as poor atomization, nozzle wear, and calibration drift that lead to hard starting, misfire, black smoke, rough idle, and elevated fuel consumption.

Typical applications include 336E and 336F excavators, 966K and 972K loaders, motor graders, mining support machinery, industrial gensets, marine power systems, and large agricultural tractors. For maximum service life, use clean diesel fuel, replace fuel filters on schedule, clean the injector seat, renew sealing washers and O-rings, bleed the fuel system, and verify injector coding via ECM diagnostics after installation.