original 174-7526 HEUI Fuel Injector for 3412E 3408 3408E Diesel Engine 20R0758 Replacement for OEM Fits 769D 773D 775D Heavy Machinery Fuel System Parts original new injector

Engineered for heavy-duty diesel performance, the 174-7526 Fuel Injector is a precision-built replacement component designed for 3412, 3412B, 3412C, and 3412E series diesel engines. This injector delivers OEM-level injection calibration and precision fuel delivery, ensuring stable combustion across mining, construction, marine, power generation, and oil & gas applications. Cross-referenced with 0R-8477, 10R-0957, and 20R-2057, it offers reliable interchangeability for fleet operators managing diverse equipment inventories.

Constructed with high-durability internal components and a corrosion-resistant housing, the 174-7526 injector withstands extreme operational loads found in haul trucks such as 777D, 785C, and 789C, bulldozers including D10R and D11R, wheel loaders like 992G and 993K, as well as 3412 generator sets and marine propulsion engines. Every unit undergoes 100% factory testing to guarantee consistent flow rates, improved fuel economy, enhanced combustion efficiency, and reduced smoke emissions. Backed by a 12-month warranty, it supports extended engine lifespan and dependable output in continuous-duty environments.

For optimal service life, use high-quality diesel fuel, replace fuel filters regularly, and perform periodic injector balance testing. During installation, thoroughly clean the injector bore, install new sealing components, verify injector seat condition, torque to specifications, prime the fuel system, and complete leak inspection. Proactive maintenance prevents common issues such as hard starting, reduced power output, excessive exhaust smoke, cylinder imbalance, and engine misfire caused by worn nozzles, carbon deposits, or fuel contamination.