Caterpillar original  177-4754 Engine Diesel Fuel Injector 222-5972 10R9237 274-1454 For CAT 322C 325C 3126B Excavator Spare new injector original new injector

The CAT 3126 HEUI fuel injector 177-4754 / 1774754 is engineered as an OE-style replacement for Caterpillar 3126, 3126B, and 3126E diesel engines fitted with the Hydraulically actuated Electronically controlled Unit Injector (HEUI) fuel injection system. It is fully interchangeable with part numbers 10R-0782, 10R0782, CA10R0782, 10R-9237, 10R9237, 178-0198, 1780198, CA1780198, 178-0199, 1780199, CA1780199, 205-1285, 2051285, CA2051285, EX630782, 128-6601, 1286601, 173-4566, 183-0691, and 630782, allowing B2B buyers to consolidate SKU inventory across multiple cross references.

This injector is designed for heavy-duty applications including CAT 322C, 322C FM, 325C, 325C FM, M325C MH, IT62G II, 570B, 580B, 950G II, 962G II, and SPP101 equipment used in construction, mining support, forestry, material handling, and generator or pumper service. It is available as a single unit or a complete 6-piece set, serving wholesalers, importers, repair workshops, fleet owners, engine rebuilders, and equipment maintenance teams operating remanufacturing programs and emergency repair supply chains.

When correctly matched and installed, the injector helps restore proper fuel delivery, balanced cylinder contribution, stable idle quality, and responsive engine performance. To protect HEUI actuation, technicians should replace the fuel filter, drain the water separator, flush contaminated lines, inspect the harness and connector pins, and confirm ECM fault codes and cylinder balance after installation.