original 0R-3389 Diesel Pump Nozzle Injection for 3116 Engine 322B 325B 446B Truck Common Rail Parts Injector new injector original new injector

The 3116 Fuel Injector 0R-3389 0R3389 is a reman and original-standard replacement unit injector engineered specifically for the 3116 inline 6-cylinder, 4-stroke diesel platform with 6.6 L displacement, 105 mm x 127 mm bore and stroke, turbocharged-aftercooled aspiration, mechanical governor, and 2800 rpm rated speed. It is designed as a direct-fit injector GP for the 3116 base engine and is also referenced for related 3116 DIT, 3114, 3126, 3126B, and C7 applications, giving B2B buyers a single part number that covers overlapping engine rebuild and replacement jobs. The component is dimensionally matched to the 3116 fuel system, supporting precise fuel delivery and fine atomization for marine power ratings of 224 bkW / 300 bhp and 261 bkW / 350 bhp.
This 3116 injector 0R-3389 carries a rich OE cross-reference catalog including 0R-3389, 4P-2995, 0R-8471, 7E-8952, 7E-8729, 0R-4374, 0R-3006, 127-8216, 127-8218, 107-7735, 156-5023, 0R-8682, 127-8213, 127-8222, and 127-8205, which simplifies sourcing for distributors, wholesalers, and aftermarket inventory programs. The unit is suitable for medium-duty trucks, buses, marine vessels, excavators, wheel loaders, generator sets, industrial power units, mining support equipment, and agricultural machinery, serving truck repair shops, fleet operators, marine diesel repair companies, heavy equipment dealers, generator service teams, and engine rebuilders.
Engine-focused fitment reduces installation risk on the 3116 platform. Maintenance requires clean diesel fuel, regular fuel filter replacement, water separator drainage, fuel tank cleanliness checks, air intake and cooling system service, oil analysis, injector balance testing, correct seating torque, and clean storage. Common repeat-failure causes include fuel contamination, water in fuel, poor filtration, overheating, dirty installation, incorrect torque, damaged seals, and mismatched injector sets; verify fuel pressure, return flow, leak-off, filter condition, cylinder balance, compression, spray quality, and timing before condemning the injector.