Perkins original Perkins 250-1312 fuel injection assembly spare part replacement for OEM engine component new injector original new injector

The Perkins 250-1312 fuel injector is an OEM-grade component engineered for the Perkins 3512B engine, a V12 turbocharged and aftercooled diesel platform designed for heavy-duty generator sets, marine propulsion, and industrial power units. This injector carries primary OE number 250-1312 / 2501312 and is fully interchangeable with authorized cross numbers 10R-1275, 20R-0849, 162-8813, 204-2067, 229-1631, 245-8272, 246-1854, 250-1311, 250-1302, and 386-1758, providing broad coverage across the 3512B engine series and related 3512 industrial, marine, and power generation models.

Built to OEM standard specifications, the injector delivers precision fuel metering and high-pressure atomization for optimum combustion efficiency. Corrosion-resistant materials and OEM build quality ensure extended service life in demanding industrial conditions, including mining power modules, oil & gas power packs, construction diesel engines, emergency backup systems, and telecom backup power installations. The injector receives high-pressure diesel fuel, precisely meters the appropriate volume according to ECU commands, and atomizes the fuel through fine nozzles to support efficient direct ignition, maximizing power output while reducing fuel consumption and emissions.

Routine maintenance includes scheduled fuel filter changes, injector leak tests, fuel pressure checks, injector balance evaluations, and fuel contamination monitoring. Before installation, clean fuel lines thoroughly, replace all seals, apply Perkins torque specifications, perform ECU injector coding when required, and conduct a post-installation fuel pressure test to confirm proper seating. Symptoms such as hard starts, abnormal smoke patterns, rough idle, and unstable engine power frequently indicate injector wear, leaks, spray pattern deviation, or clogging, which can be diagnosed through pressure and balance testing.