original Common Rail Diesel Fuel Injector 456-3544 4563544 20R-5079 367-4293 for C9.3 Engine 336E 336E L 336EL 966K 972K Excavator Wheel Loader original new injector

Engineered for demanding industrial applications, this high pressure common rail diesel fuel injector (OE 456-3544, cross-reference 20R-5079) delivers precise fuel atomization for C9.3 series diesel engines. Manufactured to OEM equivalent standards, the injector assembly is a direct replacement for 336E, 336EL, and 336ELN excavators, 966K and 972K wheel loaders, D6T bulldozers, generator sets, and industrial power units operating in construction, mining, and power generation environments.

The injector incorporates precision nozzle technology, heat-treated internal components, and a corrosion-resistant surface treatment to withstand extreme injection pressures and prolonged duty cycles. Each unit undergoes electronic calibration verification to ensure accurate spray patterns, consistent flow rates, and reliable performance across the full engine load range. Benefits include improved combustion efficiency, reduced fuel consumption, lower exhaust emissions, enhanced engine output, and faster throttle response. The injector is compatible with C9.3, C9.3 ACERT, C9.3 Industrial, Generator, and Marine engine variants, supporting quarry operations, oil and gas services, marine auxiliary power, agricultural heavy equipment, and infrastructure fleets.

Supplied under HS Code 8409999990 with 12 months warranty, the injector is available in neutral or customized packaging suitable for B2B distribution and OEM aftermarket channels. Recommended maintenance includes using clean diesel fuel, replacing fuel filters regularly, avoiding water contamination, and performing periodic injector bench testing. Installation requires torque to OEM specification, new sealing washers, and ECU diagnostic calibration to ensure leak-free operation and long service life.