original 392-6214 250-1306 250-1308 Fuel Injectors for Mining Cars Diesel Engine Parts original new injector

The 392-6214 fuel injector is a high-pressure common rail unit specifically engineered for 3508B, 3512B, and 3516B diesel engines used across industrial power generation, marine propulsion, mining operations, heavy-duty construction machinery, and oil and gas installations. Manufactured to OEM tolerance standards, it serves as a direct replacement for the original assembly and is fully interchangeable with part numbers 20R-1275, 386-1766, 20R-1262, 192-2817, 392-0215, 392-0216, 250-1314, 437-7547, and 359-5469, simplifying cross-reference lookup for fleet maintenance teams and engine rebuilders.

A precision-machined nozzle combined with hardened internal components delivers consistent atomization, stable idle behaviour, and reliable high-pressure injection under demanding load cycles. The corrosion-resistant construction supports long service life in extreme environments, while improved combustion efficiency contributes to lower fuel consumption, reduced exhaust emissions, and higher power output. Each injector is dimensionally checked against original specifications to ensure proper fitment on the 3512B series and its compatible engine variants in genset, marine, and stationary applications.

Routine maintenance should include periodic fuel filter replacement, fuel pressure inspection, injector performance testing, and ongoing fuel quality assessment. During installation, technicians should clean the injector bore and fuel supply lines, fit new seals and O-rings, apply approved lubricant, and torque the hold-down bolts to the specification. Spray pattern verification on a test bench and post-installation leak checks are recommended to confirm correct operation. Common signs of injector failure such as black smoke, white smoke, rough idle, hard starting, or power loss indicate the need for replacement with this 3926214 unit.