One New Aftermarket Replacement Fuel Injector (HEUI) for Caterpillar (Cat) 3126B / 3126E Engines

This aftermarket replacement fuel injector fits Caterpillar (Cat) 3126B and 3126E diesel engines, including the HEUI (Hydraulically Activated, Electronically Controlled Unit Injector) design used across multiple Cat excavator, wheel loader, and harvester applications. The 178-0199 injector delivers precise fuel atomization and metered delivery as part of the Cat 3126 series fuel system.

Compatible Models

Caterpillar Excavators: 322C, 322C FM, 325C, 325C FM, 325C L, M325C, M325C MH

Caterpillar Wheel Loaders: 950G II, 962G II, IT62G II

Caterpillar Wheel Harvesters / Forest Machines: 570B, 580B

Caterpillar Combines: 465, 460, 470

Caterpillar Engines: 3126, 3126B, 3126E

Replaces Part Number(s):

178-0199, 1780199

Aftermarket Interchange Numbers

10R-0782, 10R0782, 10R-9237, 10R9237, 177-4754, 1774754, 178-0198, 1780198, 205-1285, 2051285, 128-6601, 1286601

New aftermarket replacement part - not remanufactured, not used.