Perkins original Perkins original Diesel Engine Common Rail Fuel Injector 557-7633 387-9433 for 330D 336D Excavator Construction Machinery Spare Parts Replacement for OEM new original new injector

The Perkins 20R-8064 fuel injector is an OE-specification replacement component designed for the Perkins C9, C9 ACERT, and C9.3 engine series, operating within a High Pressure Common Rail system that delivers injection pressures exceeding 1,600–2,000 bar. Manufactured with CNC-machined components, micron-level tolerance control, and a laser-calibrated nozzle assembly, this injector ensures precise fuel metering, improved combustion quality, and reduced fuel consumption across heavy-duty applications. Cross-referenced to authorized numbers 320-8064, 10R-8056, 10R-8055, 10R-8057, 3208064, 10R8056, 10R8057, 10R8055, and 600–2, the unit provides a direct fit for engine service, rebuild, and aftermarket replacement requirements.

Engineered for demanding operating environments, this C9 series injector features hardened internal components, corrosion-resistant steel construction, and high-temperature-resistant, wear-resistant surfaces to maintain a stable injection performance and consistent spray pattern over an extended service life. The precision fuel atomization supports lower particulate matter emissions and reduced NOx production, helping operators meet environmental compliance standards without sacrificing engine output. Each unit is 100% performance tested to OEM quality standards, ensuring reliable operation in construction, mining, power generation, marine, and general industrial equipment.

The 20R-8064 injector is suitable for excavators including 320D, 325D, 330D, and 336D models, wheel loaders such as 950H and 966H, motor graders, bulldozers, backhoe loaders, haul trucks, crushers, prime, standby, and emergency generator sets, pump drives, compressors, drilling equipment, marine auxiliary engines, commercial vessels, irrigation systems, harvest equipment, and large tractors. Recommended maintenance includes daily inspection of fuel leakage, connectors, engine noise, and exhaust smoke; every 250 hours, fuel filter inspection, injector balance test, and fuel pressure verification; every 500 hours, injector performance diagnosis, spray pattern inspection, and return flow testing; and every 1000 hours, full fuel system inspection, injector calibration verification, and fuel rail cleaning to ensure long-term reliability and consistent engine performance.