Caterpillar original For Caterpillar C4.4 C6.6 Common Rail Fuel Injector 10R-7938 for Excavator D6K D6N E320D Replacement for OEM Parts Cross Reference 321-3600, 320-0690 original new injector

For Caterpillar heavy equipment parts distributors, maintenance service providers and fleet operators seeking validated fuel system replacement parts, the original 10R-7938 common rail diesel injector is engineered exclusively for Caterpillar C6 Series engine platforms. It serves as a direct replacement for C6.4 and C6.6 engines (including ACERT variants), and is compatible with a wide range of CAT equipment spanning 320D to 329D excavators, 950H and 962H wheel loaders, generator sets, industrial power units and mining machinery, with full cross-reference support for listed OEM part numbers.

Built with high-strength alloy steel and rated for operating pressures up to 2000+ Bar, this electronically controlled injector delivers precision fuel metering and optimized atomization to support complete, efficient combustion. The design delivers core operational benefits: increased engine power output, lower fuel consumption, reduced exhaust emissions, and extended engine service life, even under the extreme demands of construction, mining, industrial production and power generation operating conditions.

Every 10R-7938 injector undergoes OEM calibration and factory flow testing to ensure consistent, industrial-grade reliability and corrosion-resistant performance. Professional installation is required, including replacement of injector seals and washers, post-installation fuel pressure verification, injector coding if required and pre-operation leak testing; routine maintenance with OEM-quality fuel filters and water contamination prevention further extends service life, making it a dependable solution for global aftermarket and bulk procurement needs.