original 268-1835 C7 C9 Diesel Engine Injector 20R8066 243-4502 3879427 3282585 Replacement for OEM new injector original new injector

The 268-1835 fuel injector is designed as a direct replacement assembly for C7 diesel engines installed across a wide range of construction and forestry equipment. Engineered for precision fuel delivery, the injector supports stable atomization, balanced cylinder performance, and reliable cold-start behavior under load. It is commonly specified for excavator models including the 324D, 325D, 328D LCR, and 329D series, as well as the 950H and 962H wheel loaders, 140G and 140M motor graders, and AP-755, AP-1000D, AP-1055D, BG-2455D, and BG-260D asphalt pavers.

Durability and consistent engine response are achieved through heavy-duty application design and strict compatibility with the diesel fuel system. Before installation, operators should confirm the engine serial number and original injector number, as some aftermarket listings reference C9 engine fitment that requires additional verification. Correct matching of cross reference numbers such as 2681835 and CA2681835 helps ensure proper fuel pressure, low smoke output, and optimized fuel economy in demanding working conditions.

Routine maintenance plays a critical role in injector service life. Clean fuel, correct filtration, proper water separation, clean fuel tanks, and intact electrical connectors are essential for long-term performance. Fuel filters should be replaced according to the machine maintenance schedule, water separators drained regularly, and injector connectors inspected for corrosion, looseness, damaged pins, and contamination. Common symptoms such as hard starting, rough idle, black or white smoke, engine knock, misfire, power loss, and elevated fuel consumption may indicate injector wear, nozzle leakage, or fuel contamination, and should be addressed through diagnostic scanning, cylinder cut-out testing, injector leakage inspection, flow testing, and fuel pressure testing.