Perkins original 571-0940 Replacement Diesel Injector 295700-1200 371-3974 370-7282 20R-4560 0445120371 for Perkins C4.4 C6.6 C7.1 Engine Parts new original new injector

The Perkins C4.4 Diesel Fuel Injector 5710940 is a precision-engineered fuel injection component manufactured to OE-level dimensional standards for direct fitment on C4.4, 3044, 3044C, 3054, and 3054C inline four-cylinder diesel engines. Built using CNC precision machining with a hardened steel nozzle and internal valve assemblies, this injector delivers accurate fuel metering, optimized atomization, and stable combustion. The surface treatment provides corrosion protection, while thermal stability ensures reliable continuous operation under extreme temperature conditions, consistent with OEM Equivalent quality requirements for high-pressure diesel injection systems installed in the cylinder head position.
Designed as a versatile cross-reference solution, the 571-0940 injector fully corresponds to authorized reference numbers 10R-7220, 326-4706, and 326-4707, allowing seamless replacement across multiple engine configurations. It supports a broad range of applications, including construction equipment such as excavators, wheel loaders, backhoe loaders, skid steer loaders, compact track loaders, telehandlers, and road construction machinery. Additional coverage extends to mining loaders, mining support equipment, mobile power systems, agricultural tractors, harvesters, sprayers, agricultural power units, generator sets, standby and continuous-duty generators, mobile power units, backup power systems, industrial power modules, and industrial marine diesel auxiliary engines.
The injector is engineered for precise spray pattern control, improving combustion efficiency while reducing fuel consumption, particulate emissions, and exhaust smoke. To maintain peak performance, scheduled maintenance is recommended at 250 hours (inspect fuel filters), 500 hours (inspect injector condition), 1000 hours (test spray pattern), 2000 hours (clean fuel system), 3000 hours (verify calibration), and 5000 hours (complete injector inspection). This maintenance protocol helps prevent common fault conditions such as hard starting caused by nozzle blockage, excessive smoke from injector leakage, power loss due to poor atomization, rough idle from uneven fuel delivery, engine knock from incorrect spray pattern, high fuel consumption from worn nozzle, misfire from internal wear, white smoke indicating delayed combustion, black smoke from over fueling, and engine stalling caused by fuel restriction. Brand new and ready for installation, the 571-0940 provides dependable long-term performance for demanding industrial operations.