Caterpillar original  4P-2995 Common Rail Fuel Injector 0R-8682 127-8230 for 3114 3116 Engine 320B 325B Excavator replacement for OEM new original new injector

The Caterpillar CAT 3116 3114 C7 Diesel Fuel Injector 4P-2995 4P2995 is engineered as a direct OE-style replacement for the 3100 Series MUI diesel platform, covering the 4P-2995, 0R-8471, 0R-3389, 7E-8952, and 0R-3006 cross reference families. Designed for the CAT 3116 and CAT 3114 mechanical unit injector system, it serves medium-duty trucks, buses, marine auxiliary engines, generator sets, and a wide range of industrial and construction equipment. The injector is compatible with both new aftermarket and remanufactured supply channels, offering distributors and fleet operators a flexible sourcing option for routine replacement, engine rebuild, and field repair programs.

Precision atomization produces a consistent fine spray pattern, while stable fuel metering delivers controlled injection quantity across the operating range, supporting efficient combustion and reliable cold-start performance. Every unit is required to pass quality testing for leakage, fuel delivery rate, and spray pattern, ensuring dependable performance in heavy-duty operating environments. The injector is available as a single replacement unit or in a 6-piece full set, giving workshops and rebuild specialists the flexibility to service individual cylinders or complete the full bank in one order.

Proper maintenance extends service life: operators should replace the fuel filter regularly, use clean diesel from reliable sources, drain the water separator frequently, and keep the fuel tank free from water, sludge, and microbial contamination. If symptoms such as hard starting, rough idle, black or white smoke, misfire, or excessive fuel consumption appear, the injectors should be tested for spray pattern, leakage, and delivery rate. When cylinder imbalance is detected, all injectors on the bank should be tested or replaced together to restore balanced engine performance.