Caterpillar original Diesel Fuel Injector, Cross Reference 328-2582, 10R-4761, 10R-4763, Fuel Injector 10R-4762, Replacement for OEM, for C7 Truck Engine, Truck Application original new injector

Sourcing the correct injector for a Caterpillar C7 engine starts with one number: 10R-4762 (10R4762). This HEUI electronic unit injector assembly is a heavy-duty diesel fuel injection component used in fleet maintenance, engine repair, generator set service, and remanufacturing programs. Frequently searched interchange numbers include 10R4762R, EX634762, 20R-8058, 222-5962, 238-9808, 241-3239, 243-4503, 295-1409, 328-2584, and 387-9429. As these numbers span replacement, remanufactured, and aftermarket catalogs, fitment should always be confirmed against the engine serial number and original injector number.

In operation, the injector delivers a precisely metered quantity of diesel into each cylinder at the correct moment. In C7 HEUI-style systems, performance depends on both fuel supply pressure and high-pressure engine oil actuation, with the ECM controlling timing and duration according to speed, load, temperature, throttle demand, boost pressure, and emissions strategy. A healthy unit restores accurate fuel delivery, proper atomization, stable combustion, smooth idle, consistent power, improved fuel economy, and reduced visible smoke when the original injector is worn, sticking, leaking, or electrically failing.

The 10R-4762 is positioned mainly for Caterpillar C7 7.2L engines in on-highway, industrial, and generator set configurations; C9 references require serial-number verification. Typical installations include trucks, buses, RVs, generator sets, construction machinery, and industrial power units. Injectors are supplied as remanufactured, rebuilt, new aftermarket, or exchange units; installation should be handled by a diesel technician, with trim-code programming into the ECM where required.