original 107-7733 Diesel Fuel Pump Injector 0R-3580 0R-8682 107-7773 101-8673 107-1230 for 320B 322B 322C 325B M318 Replacement for original new injector

Engineered as a direct-fit replacement for 3116 and 3114 diesel engines, the 107-7733 fuel injector assembly delivers precision fuel metering and optimized atomization to maintain combustion efficiency under heavy-duty industrial load conditions. Built with heavy-duty internal components and OE-style fitment geometry, the unit supports consistent fuel delivery across the full RPM range of the 3116 and 3114 platforms, and is widely adopted by repair shops, rebuilders, fleet maintenance companies, and diesel parts distributors servicing excavators, wheel loaders, motor graders, track loaders, compactors, and asphalt pavers listed in the application range.

Before installation, technicians should verify the part number and engine serial number, clean the injector bore and surrounding fuel system area, install new seals and O-rings where required, and follow service manual torque specifications. After fitting, prime the fuel system, check for leaks at the injector seat and high-pressure line connections, and evaluate idle quality, acceleration response, exhaust smoke level, and loaded performance to confirm correct operation. Common symptoms indicating this injector may require replacement include hard starting, rough idle, black or white smoke, power loss, elevated fuel consumption, engine knock, and misfire, often traced to poor atomization, uneven fuel delivery, over-fueling, internal leakage, incorrect injection timing, or clogged nozzles.

For maximum service life, use clean diesel fuel meeting specifications, replace fuel filters at recommended intervals, prevent contamination of the injector nozzles and inlet screens, and replace injectors as a matched set whenever possible. Store injectors with protective caps installed, avoid mechanical impact during handling, and run periodic diagnostic tests to monitor injection balance. The cross-reference coverage across multiple authorized numbers allows the same SKU to serve diverse inventory and service requirements.