original 222-5968 electronic unit diesel injector engine spare component new injector original new injector

This fuel injector is engineered specifically for 3126, 3126B, and C7 diesel engines equipped with the HEUI (Hydraulically actuated Electronically controlled Unit Injector) system. Designed as a direct-fit OE replacement, it delivers precise fuel metering and fine atomization to support stable combustion, reduced smoke output, smoother idle quality, and improved throttle response under heavy-load operating conditions. The heavy-duty construction and replacement-ready design ensure dependable service life in demanding commercial and industrial environments.

The injector provides extensive cross-number coverage, including 222-5968, 2225968, 10R-1306, 10R1306, 173-3922, 183-6797, and the corresponding CA-prefixed references, allowing seamless integration with engine databases, remanufacturing programs, and global spare parts distribution channels. It is suitable for medium-duty trucks, buses, commercial fleets, generator sets, construction machinery, excavators, agricultural equipment, mining fleets, and heavy equipment workshop applications where engine balance and reliable fuel delivery are critical.

Before installation, confirm the injector part number, engine serial number, equipment model, and original injector tag. Clean the fuel system and injector bore, replace all seals, O-rings, washers, and required hardware, and follow the service manual for correct torque values. Prime the fuel system, perform leak testing, and after installation verify idle quality, smoke levels, misfire behavior, and diagnostic trouble codes to ensure proper engine performance.