Perkins original  20R-1264 Common Rail Injector Assembly for 3512 3512B 3516B 3508 3508B GEN SET SR4B SR4BHV Replacement for OEM  original new injector

The Perkins 20R-1264 fuel injector is engineered for the Perkins 3512B, 3508B, and 3516B diesel engine platforms, delivering precise fuel metering and consistent spray atomization under demanding industrial loads. Manufactured to OEM calibration tolerances, this electronic unit injector supports high-pressure common rail performance across marine propulsion, generator set, mining, and oil & gas applications. The assembly is built with wear-resistant internal components and corrosion-protected housing materials, ensuring extended service life in continuous-duty environments where fuel quality and ambient conditions vary considerably. Each unit is performance-tested prior to dispatch to verify flow rate, spray pattern, and sealing integrity.

This injector carries full cross-reference compatibility with part numbers including 392-0200, 386-1752, 10R-1284, 0R-9944, 229-0197, 250-1300, 162-8813, 144-5665, 246-1854, 392-0205, 386-1757, 10R-7237, and 244-7748, simplifying replacement sourcing for fleet operators and maintenance workshops. Routine inspection should cover external fuel leaks, idle smoothness, and exhaust smoke color, while scheduled service intervals call for fuel filter replacement, return-line cleanliness checks, fuel pressure verification, and ECM diagnostic log review. Symptoms such as hard starting, black or white smoke, rough idle, or elevated fuel consumption typically point to injector wear, over-fueling, atomization loss, uneven delivery, or internal leakage.

Designed for heavy-duty diesel operations, the Perkins 20R-1264 injector meets the operational demands of construction equipment, industrial power plants, emergency backup systems, and agricultural installations. Its robust construction and OEM-equivalent performance make it a reliable solution for maintaining engine efficiency, reducing unscheduled downtime, and supporting long overhaul intervals in Perkins 3500 Series power packages.