Denso original Denso original Denso Diesel Common Rail Fuel Injector 295050-0720 6252-11-3100 6252113100 for SAA6D125E-6 PC400-7 PC450-7 Excavator new injector original new original new injector

The DENSO 295050-0720 is an original-type common rail diesel fuel injector engineered specifically for the KOMATSU SAA6D125 engine used in PC400-10, PC490LC-10, HM300-3 and WA470-7 heavy equipment. Belonging to the KOMATSU 2 series and the Generation 3 product family, this solenoid-actuated high-pressure injector is built to OE replacement standards and cross-references with 295050-0720, 2950500720, 6252-11-3100, 6252-11-3101, R6252-11-3100 and 295050-2750. The stud terminal configuration and side fuel import location allow direct fitment on the SAA6D125 cylinder head, with an overall length of 8.92 inches.

Working within the high-pressure common rail system, the injector's solenoid actuator is precisely controlled by the engine ECU based on engine speed, load, rail pressure, boost pressure, coolant temperature, fuel temperature and emission strategy. The ECU determines injection timing, duration, quantity and response, while the solenoid opens and closes the injector needle to deliver fine atomized spray into the combustion chamber for accurate fuel metering. Professional ECU coding is required after installation, making this injector well suited for workshops handling excavator repair, wheel loader service, articulated dump truck maintenance, mining fleet operations and full SAA6D125 engine rebuilding.

Long service life depends on clean diesel fuel, correct filtration, water separation and professional installation. Water, rust, dust and contaminated fuel can damage the nozzle, solenoid control valve and precision internal components, so fuel quality inspection, filter condition, air-in-fuel checks, rail pressure monitoring, return flow testing and bench testing are recommended. Before fitting, confirm the old injector body number, KOMATSU OE number, engine model, engine serial number and machine serial number, ensure the injector bore is clean, replace required seals, inspect high-pressure pipes and bleed the fuel system. After installation, verify injector code, rail pressure, return flow, cylinder balance and ECU fault codes using proper diagnostic equipment.