Kubota 4289841 Fuel Injector Assembly

The Kubota 4289841 fuel injector is a direct-acting solenoid injector designed for Kubota V2403 and D1803 series diesel engines. It delivers precise fuel metering and atomization for direct injection combustion chambers across naturally aspirated and turbocharged variants including T4I and E3B emission tiers. This component is a critical wear item within the high-pressure fuel system. It features a multi-hole nozzle calibrated for specific spray pattern and opening pressure requirements of the 03-M series engines. The injector body is constructed from high-grade alloy steel to withstand cyclic combustion pressures and thermal loads. It serves as a direct replacement for OEM part number 4289841, ensuring factory fitment and performance restoration for equipment such as the Jacobsen Lightweight Fairway Mower.