original 10R-4761 C7 C9 Diesel Fuel Injector Nozzle 20R-1260 328-2586 241-3400 10R-4763 295-1408 new injector original new injector

Engineered specifically for the C7 and C7.1 engine platforms, the 10R-4761 fuel injector delivers precise electronic unit injector performance that matches the original equipment calibration requirements. The unit is a direct-fit replacement for OE number 10R4761 and serves as an authorized alternative for 236-3273 and 317-4891, with additional cross references covering 236-3267, 236-3269, and 236-3275. This injector integrates seamlessly with the C7 ACERT fuel system architecture, supporting stable rail pressure, accurate injection timing, and consistent spray pattern formation across the entire engine operating range. The component is factory tested and supplied brand new with a 12-month warranty, ready for installation in excavators, wheel loaders, generator sets, and other heavy-duty -powered equipment.

The 10R-4761 is built using high-strength alloy steel components, precision-ground valve assemblies, and hardened nozzle technology to ensure durability under high-pressure common rail conditions. Each injector undergoes comprehensive quality testing including 100% fuel flow testing, leakage testing, spray pattern testing, response testing, and calibration verification before shipment. These procedures ensure optimal fuel atomization, improved fuel economy, reduced black smoke, enhanced engine power, faster engine response, stable idle performance, and lower exhaust emissions. The result is a long service life and reduced maintenance cost for operators running construction machinery, mining equipment, industrial power units, and diesel generator applications.

Proper installation and preventive maintenance are essential to achieving maximum injector service life. Recommended installation practices include replacing all injector seals during fitting, cleaning the injector bore before assembly, verifying ECM calibration after installation, applying -recommended torque values, and performing injector coding when required by the engine control system. For ongoing maintenance, operators should use ultra-clean diesel fuel, replace fuel filters at scheduled intervals, avoid water contamination, and apply OEM-quality fuel additives when necessary. Maintaining correct fuel system pressure ensures the 10R-4761 continues to deliver reliable performance across the full range of C7 and C7.1 industrial, marine, power generation, and heavy-duty construction applications.