Perkins original Perkins original Perkins 20R-1304 Diesel Fuel Injector 20R1304 359-7434 3597434 253-0619 Replacement for C15 C18 Truck Engine Parts new injector original new original new injector

The Perkins 20R-1304 is an OEM remanufactured Electronic Unit Injector designed specifically for Perkins C15 and C15 ACERT diesel engines. Built to original equipment manufacturing tolerances, this injector delivers precise fuel metering through high-pressure injection technology and a precision-machined nozzle assembly, ensuring consistent atomization for reliable combustion across demanding operating conditions encountered in on-highway trucks, generator sets, and heavy industrial machinery. Long-life internal wear components combined with corrosion-resistant construction support extended service intervals in severe-duty applications.

As a direct OE replacement, the 20R-1304 injector cross-references to part number 20R1304 and integrates seamlessly with the Perkins EUI fuel system. Factory-calibrated performance helps improve combustion efficiency, increase engine power output, and lower fuel consumption while reducing exhaust emissions. This unit is engineered to meet the fuel delivery requirements of Peterbilt, Kenworth, and Freightliner trucks equipped with the Perkins C15, as well as Perkins generator sets, mining equipment, construction machinery, and oilfield power units operating in harsh environments.

Routine maintenance of the 20R-1304 injector requires the use of clean diesel fuel, regular replacement of fuel filters, and periodic monitoring of fuel system pressure. Performing injector balance testing and ECM diagnostics at recommended intervals helps identify performance deviations early, preventing escalated failures. Common diagnostic indicators for a worn or failing C15 injector include increased exhaust smoke, reduced engine power, hard starting, rough idle, elevated fuel consumption, active diagnostic fault codes, and engine misfire events.