original 10R-1256 Diesel Fuel Injector for C12 C10 Excavator Engine Fuel Injection System Replacement for OEM 10R-1003 10R-1258 10R-1259 Auto Spare Parts original new injector

Engineered for demanding diesel service, this remanufactured fuel injector (OE 10R-1256, cross reference 223-5327, 212-3464, 10R-0725, CH12082, 0R-8773, 229-5918, 212-3463, 229-8842, 10R-1003, 20R-0055) is developed for C10 and C12 engine platforms, with supplier listings also covering 3176, 3176C, and 3196 applications. The unit delivers the correct quantity of diesel fuel into the combustion chamber at the correct timing and spray pattern, supporting fuel delivery accuracy, atomization quality, combustion stability, and long service life in professional rebuild programs.

A properly functioning 10R-1256 injector helps restore combustion balance, reduce rough idle, improve throttle response, support fuel economy, reduce exhaust smoke, and protect pistons, valves, cylinder liners, and turbocharger systems. Reman construction includes coated plungers, engineering updates, and end-of-line testing to withstand modern low-sulfur, low-lubricity diesel fuels. The injector is suitable for heavy-duty trucks, construction machinery, mining equipment, marine auxiliary engines, power generation gensets, and general industrial engines.

Before installation, compare the old injector number with 223-5327 and 10R-1256 reference data, confirm engine serial number and arrangement, replace seals, O-rings, and washers, and follow service manual torque specifications. Perform injector trim coding if required. For balanced cylinder performance, install a matched set of six injectors during major overhaul, fleet maintenance, or diesel parts distribution programs.