Caterpillar original 10R-9003 Common Rail Fuel Injector 10R-7222 for Caterpillar C7 C9 Engine Excavator, Replacement for OEM 387-9431, 328-2580 Diesel Engine Parts Construction original new injector

The Caterpillar (CAT) 10R-9003 electronic unit fuel injector is a precision-manufactured diesel injection component engineered to strict OEM specifications for C9 and C9.3 series diesel engines. Designed for heavy-duty use across construction, mining, power generation, marine, and industrial machinery sectors, it serves as a critical replacement part for Caterpillar-powered equipment operating in demanding environments worldwide. This brand-new injector meets OEM quality standards to deliver consistent, factory-matched performance for compatible engine setups.

Operating within a high-pressure electronically controlled common rail diesel injection system, the 10R-9003 injector responds to ECU signals to meter and atomize fuel with high precision before it enters the combustion chamber. Its industrial-grade design includes high-precision nozzle technology, OEM-grade calibration, wear-resistant internal parts, and corrosion-resistant construction to support stable performance under sustained heavy loads. These attributes optimize combustion efficiency, reduce fuel consumption and emissions, boost power output, and improve cold-start performance for compatible diesel engines.

The injector is available with neutral, OEM, or customized packaging to suit diverse B2B procurement needs, and comes with a 12-month quality warranty. It cross-references with part numbers 236-0962, 2360962, 328-2585, and 3282585, and fits typical equipment including CAT 330D/336D excavators, 966H/972H wheel loaders, 140M motor graders, generator sets, and marine engines. All fitment must be verified via engine and equipment serial numbers before purchase, and professional installation following OEM specifications is recommended.