Caterpillar original Diesel Engine Fuel Injector Replacement for 10R-0782 Compatible with 3126 3126B 3126E C7 Engines and 962G 950G 570B 322C 325C 325B Excavator Spare Parts original new injector

The Caterpillar 10R-0782 is a heavy-duty HEUI diesel fuel injector purpose-built for Caterpillar 3126 series engines, primarily for 3126B and 3126E variants. As a critical fuel system component, it delivers precise fuel metering, optimized atomization and accurate timing to sustain stable engine power, boost combustion efficiency, maintain fuel economy, support emissions stability and extend service life. As a Cat Reman part, it is engineered exclusively for Cat engines and compatible with modern low-sulfur, low-lubricity diesel fuels, with extensive testing and engineering updates for like-new performance.

The injector cross-references common replacement numbers including 178-0199, 177-4754, 178-0198, 205-1285 and EX630782, with 10R-9237 as the related six-piece kit number. It fits diverse Caterpillar equipment across truck, industrial, petroleum and generator set configurations, including 322C/325C excavators, 950G II/962G II wheel loaders, 570B/580B machinery and mobile hydraulic power units. All fitment requires confirmation via engine serial number, original injector number, trim code and equipment model before ordering, as configurations vary by production specification.

Integrated into the Cat HEUI system, the injector receives ECM signals to activate its solenoid, allowing high-pressure engine oil to hydraulically drive fuel pressurization, metering and atomization before combustion chamber delivery; the solenoid closes promptly to end fuel delivery after each injection event. Available in remanufactured, rebuilt, replacement, aftermarket or OEM-style builds per seller, it supports fuel system overhauls, power recovery, rough idle correction and misfire diagnosis for heavy-duty Caterpillar equipment.