original 10R-1275 Diesel Fuel Injector for 3512B 3516B 3508B Engine 793C 793D Machinery Replacement for OEM 250-1314 20R-3483 375-4106 original new injector

Engineered for demanding heavy-duty diesel applications, the 10R-1275 Electronic Unit Injector (EUI) delivers precise, high-pressure fuel delivery for 3512B, 3516B, and 3508B engine platforms. This replacement injector cross-references OE numbers 127-8222 and 0R-8477, providing a reliable solution for operators maintaining large industrial diesel engines in generator sets, marine propulsion systems, mining trucks, oilfield power modules, and offshore platforms. Built to OEM quality standards, the unit is fully compatible with 3512C, 3516C, and 3508C series engines used across global power generation and heavy equipment sectors.

The injector features precision nozzle technology and OEM-calibrated fuel flow to ensure optimal atomization and combustion efficiency. Heat-resistant construction and corrosion-resistant materials support a long operational lifespan under continuous-duty conditions typical of prime power stations, drilling rigs, compression stations, and commercial marine vessels. Users benefit from stable engine performance, reduced fuel consumption, lower exhaust emissions, enhanced power output, and improved cold-start behavior — critical parameters for mining haul trucks, cargo ships, and emergency backup power installations.

For best results, install using new sealing components, clean the injector bore thoroughly, follow torque specifications, verify ECM functionality, and perform an injector balance test after installation. Regular maintenance should include clean diesel fuel, timely fuel filter replacement, fuel pressure monitoring, and periodic injector testing. Common symptoms indicating replacement include hard starting, black smoke, power loss, increased fuel consumption, engine misfire, and elevated exhaust temperatures.