original 254-4330 Diesel Fuel Injector for C9 Engine Excavator 2544330 Common Rail Fuel Injector Nozzle Assembly Replacement for OEM original new injector

Engineered for demanding heavy-duty diesel service, the 254-4330 HEUI fuel injector delivers a direct replacement solution for the C9 and C9 ACERT inline 6-cylinder engine platform. Cross-referenced with 2544330, 254-4339, 254-4340, and CA2544330, this injector assembly is designed for excavator engines fitted to 330D, 336D, 336D L, and 340D machines, as well as industrial and oilfield equipment such as pump skids, cementing units, coil tubing units, workover rigs, and hydraulic power units rated between 205–280 bkW / 205–375 bhp @ 2200 rpm.

Built for HEUI-type high-pressure actuation, the injector provides precision fuel metering that helps restore rated power, fuel economy, idle stability, and throttle response. Correct spray atomization reduces black smoke, rough running, and incomplete combustion, while full electronic compatibility ensures accurate response to ECM-controlled timing and fuel delivery commands. Each unit is quality tested for internal leakage, solenoid response time, spray pattern uniformity, flow delivery, sealing integrity, and return flow, making it suitable for individual cylinder replacement or complete engine-set overhaul with 6 pieces per set.

Ideal for excavator repair shops, diesel engine rebuilders, fleet maintenance operators, mining contractors, and global parts distributors, this injector supports reliable operation under sustained heavy-load conditions. Before installation, buyers should verify the engine serial number and confirm the removed injector matches 254-4330 or 2544330, replace seals and O-rings, flush fuel lines, and follow official service manual torque and priming procedures.