Caterpillar original Caterpillar original Caterpillar 0R-8682 107-7733 Mechanical Common Rail Diesel Fuel Injector for 3114 3116 3126 320B 322B 322C 325B Engine Parts new original new injector

The Caterpillar 3116 Fuel Injector 0R-8682 is a mechanical high-pressure diesel injector engineered as a direct OEM replacement for CAT 3116, 3114, and 3126 mid-range diesel engines. Built from hardened steel alloy with a corrosion-resistant coating, the injector operates at pressures of ≥1500 bar and delivers precision atomized spray patterns optimized for combustion stability under heavy industrial load. The assembly conforms to standard CAT injector seat geometry, ensuring direct fitment without modification, and is validated against multiple cross references including 127-8216, 127-8222, 107-7733, 127-8205, and 127-8213 to support OEM, remanufactured, and aftermarket sourcing channels.

This injector is designed for severe-duty applications across construction, mining, material handling, and power generation equipment, including loaders, backhoes, excavators, graders, track tractors, pavers, compactors, and industrial generator sets. Each unit is tested for flow rate, sealing integrity, and spray pattern consistency to meet OEM performance criteria. The enhanced material alloy resists thermal fatigue and high-pressure wear, extending service life even under continuous industrial duty cycles typical of mid-range Caterpillar platforms.

Proper installation requires cleaning the injector seat and fuel supply line, using factory-specified sealing washers, and torquing hold-down clamps to 25–30 Nm per engine manual. Operators should inspect spray quality every 500 hours, perform full flow and pressure testing within 750–1000 hours, and replace fuel filters on the engine's maintenance schedule. When power output or fuel economy degrades, the injector should be rebuilt or replaced to restore rated engine performance and emissions compliance.