original 250-1309 Common Rail Diesel Fuel Injector for C11 C13 Engine 345C 345D 349D Excavator Injector Repair Kits Replacement for OEM 2501309 10R-3258 249-0708 original new injector

Engineered for heavy-duty diesel applications, the 250-1309 Fuel Injector is a precision-built fuel injection component designed for the C13 12.5L inline-6 engine platform, including C13 ACERT, C13 Industrial, C13 Generator, and C13 Marine configurations. Manufactured to OEM tolerances, this electronic unit injector delivers reliable direct-fit replacement performance with authorized cross references 10R-0957 and 387-9433, ensuring straightforward interchangeability across a wide range of industrial fuel systems.

The injector features multi-hole nozzle technology that enhances fuel atomization for improved combustion efficiency, optimized fuel economy, and reduced emissions. Hardened internal components and corrosion-resistant materials extend service life under high-temperature and high-pressure operating conditions. Precision fuel metering supports stable engine performance across demanding duty cycles, making this component suitable for excavators including 336D, 340D, and 345D, wheel loaders 966H and 972H, 730 and 740 Series articulated trucks, industrial generator sets, marine propulsion systems, and heavy-duty truck platforms. Typical industries served include construction, mining, long-haul transportation, prime and standby power generation, and commercial marine operations.

Installation requires cleaning the injector mounting bore, removing carbon deposits, replacing sealing washers and O-rings, and torqueing mounting bolts to OEM specifications. Injector coding via ECM may be required. Recommended diagnostics include electronic scanning, resistance testing, fuel pressure inspection, injector balance testing, ECM signal verification, and spray pattern analysis to ensure optimal operation.