original 177-4754 222-5972 274-1454 10R9237 Fuel Injector for 3126B 3126 Excavator new injector original new injector

Engineered as a direct-fit replacement for the 3126 series, this HEUI diesel fuel injector is built to match the original specifications of 3126, 3126B, and 3126E engines. The unit carries the primary OE number 177-4754 and is fully cross-referenced with 10R-0782, 10R-9237, 178-0198, 178-0199, 205-1285, EX630782, 128-6601, 173-4566, 183-0691, and 630782, ensuring broad compatibility across OEM, remanufactured, and aftermarket sourcing channels. This extensive cross-reference coverage allows distributors, fleet operators, and repair shops to consolidate inventory while maintaining correct engine adaptation for -powered equipment.

The injector is calibrated for HEUI hydraulic actuation and is designed to restore precise fuel delivery, balanced cylinder contribution, smooth idle, and proper combustion in demanding working conditions. It supports applications including wheel loaders 950G II and 962G II, excavators 322C and 325C, toolcarriers, harvesters, pumpers, and stationary industrial engines such as the SPP101. Available as a single unit or as a complete 6-piece set, the injector is offered in new aftermarket, remanufactured, rebuilt, refurbished, or OEM-style replacement conditions to match different service requirements.

Proper installation of this 3126 injector requires attention to several supporting systems. The fuel filter should be replaced before injector installation, the water separator drained regularly, and the fuel tank inspected for rust, microbial growth, and sediment. Contaminated fuel lines must be flushed, and the injector harness connector and pins checked for secure contact. Because HEUI performance depends on engine oil quality, oil service intervals should be maintained. After installation, diagnostic tools should be used to verify ECM fault codes, injector balance, cylinder contribution, and exhaust smoke quality to confirm correct engine adaptation and reliable operation.