Perkins original Perkins 177-4754 Injector Nozzle for 3126B 3126 Engine 322C 325C Excavator Spare original new injector

Engineered as a direct OE-style replacement for the Perkins 3126 series, the 177-4754 fuel injector is designed to restore factory fuel delivery across the 3126, 3126B, and 3126E diesel engines equipped with the HEUI fuel injection system. Each unit is produced to meet the dimensional, hydraulic, and electrical specifications required for proper actuation pressure and injection timing within the HEUI platform, where rail oil pressure and cam-driven hydraulic force work together to atomize fuel. The injector is offered in new aftermarket, remanufactured, rebuilt, refurbished, and OEM-style replacement conditions, allowing fleet operators, rebuild shops, and parts distributors to select the option that best matches their service requirements and budget.

This injector covers a wide cross-reference range including 10R-0782, 10R0782, 10R-9237, 10R9237, 178-0198, 178-0198, 178-0199, 178-0199, 205-1285, 205-1285, and EX630782, simplifying sourcing for engines that have been remanufactured or relabeled over the years. It is validated for use in 322C, 322C FM, 325C, 325C FM, M325C MH, IT62G II, 570B, 580B, 950G II, 962G II, and SPP101 equipment, serving wheel loaders, excavators, harvesters, toolcarriers, and pumper units operating in construction, forestry, mining support, and industrial power generation. Single injectors and full 6-piece sets can be supplied, supporting both individual cylinder repair and complete engine overhaul workflows.

When correctly matched and installed, the 177-4754 helps recover fuel delivery rate, combustion balance, engine response, and idle quality on engines that have suffered from worn nozzles, internal leakage, or electrical connector failure. During installation, technicians should replace the fuel filter, drain the water separator, inspect the tank for sediment and microbial contamination, flush the fuel lines, and verify the harness and connector pins. Oil quality should also be checked, because HEUI actuation depends on clean engine oil at the correct pressure. After service, ECM fault codes should be cleared, injector balance and cylinder contribution tests performed, and exhaust smoke monitored to confirm combustion quality.