original 392-0225 Diesel Injector 20R-0863 11R-1874 392-0221 20R-1268 for 3512 3516 3508 3500, Fuel Injector new injector original new injector

The 392-0225 fuel injector is specifically engineered for the 3500 series diesel engines, including the 3512B V12, 3512C V12, and 3516C V16 configurations. Designed as a direct OEM replacement assembly, this injector matches the original factory tolerances for precise fitment within the cylinder head bore, ensuring seamless integration with the high-pressure fuel system. Each unit is precision-machined from high-strength materials that resist corrosion, thermal fatigue, and wear in continuous-duty operating environments.

This diesel fuel injector delivers high-pressure atomization and accurate fuel timing, which optimizes the combustion process across the full operating range of the 3512B, 3512C, and 3516C engine platforms. Consistent spray patterns and tight internal sealing reduce fuel leakage, lower overall fuel consumption, and minimize exhaust emissions. The result is enhanced engine durability, stable idle performance, and reliable cold-start capability for power generation, marine propulsion, mining, and oilfield applications operating in demanding field conditions.

Installation follows the standard service procedure: depressurize the fuel system, remove the worn injector, inspect the bore, fit new OEM sealing components, insert the replacement injector, torque to manufacturer specification, reconnect the high-pressure lines, perform a leak test, and start the engine while monitoring the spray pattern. Authorized OE numbers include 392-0225, 20R-3247, 280-0681, 386-1777, CA3920225, CA20R3247, CA2800681, and CA3861777, all of which cross-reference directly to the 3512B, 3512C, and 3516C engine families.