Caterpillar original Common Rail Fuel Injector OR-8473 Aftermarket Replacement for 3114 3116 Engine E320B E325B E322B Truck, Replace 0R-8867 0R-8467 original new injector

The Caterpillar 3116 fuel injector OR-8473 is a high-performance diesel injection assembly engineered to meet OEM specifications for CAT 3114, 3116, and 3126 engine platforms. Built with precision-machined internal components and high-grade materials, this injector delivers consistent fuel atomization, stable combustion efficiency, and reliable engine performance under heavy-duty operating conditions. It is fully compatible with construction excavators such as CAT E320B, E320C, E322B, E322C, E325B, and E325C, as well as wheel loaders, backhoe loaders, mining equipment, diesel generator sets, marine propulsion and auxiliary engines, heavy-duty trucks, and various industrial machinery including pumps, compressors, and power units.

This fuel injector is designed to improve fuel economy, maintain stable idle performance, reduce harmful emissions, enhance engine response, and minimize carbon deposit buildup across the combustion chamber. Each unit undergoes strict quality control and calibration processes to ensure precise injection timing and metering accuracy, which are critical for maintaining engine power output, reducing fuel consumption, and extending overall engine service life. The injector serves as a direct-fit OEM replacement part, offering dependable performance comparable to genuine Caterpillar components while supporting a wide range of industrial and mobile equipment applications.

Proper installation requires cleaning the injector bore thoroughly, inspecting the cylinder head seating surface, replacing the upper and lower O-rings, lubricating the seals before installation, and tightening the injector to the torque specifications outlined in the Caterpillar service manual. After installation, the fuel system should be bled and the engine started to verify proper injector performance. Authorized cross-reference numbers include OR-8473, 0R-8473, 127-8213, 101-8673, 4P-1734, CA1278213, CA0R8473, 459-8473, 387-9434, 148-012-0057, OR-4374, 0R-4374, OR-3382, and 0R-3382.