Perkins original  20R-9079 Diesel Fuel Injector Nozzle 20R9079 10R7225 387-9427 Replacement for C7 C9 326D 328D 329D Excavator  original new injector

The Perkins C7 fuel injector 20R-9079 is an OEM-quality replacement assembly engineered for the Perkins C7, C7.1, and C7 ACERT diesel engine platforms. It serves as a direct cross-reference for 237-0748 and is fully interchangeable with 10R-7079, 10R-7225, 320-0689, 557-7627, 20R-8066, 268-1835, 295-1411, 328-3585, and 387-9427, covering a wide range of remanufactured and OEM service part numbers used across global Perkins C7 applications. Each unit is built with high-strength steel, corrosion-resistant surface treatment, and precision-machined nozzles to deliver stable atomization and consistent fuel delivery under high-pressure common rail conditions rated from 2000 to 2500 bar.

This injector is designed for heavy-duty industrial service in excavators, wheel loaders, graders, bulldozers, diesel generators, pumps, compressors, mining machinery, agricultural equipment, and selected marine installations. It supports continuous operation within an ambient range of -40°C to 120°C (-40°F to 248°F), making it suitable for harsh field environments. The direct screw-in installation uses an engine-specific torque of 40 to 45 Nm, and the package includes matched seals and washers to ensure a reliable, leak-free mounting aligned with the fuel rail.

Technicians receive full installation, calibration, and maintenance documentation with each injector. Recommended service intervals include cleaning every 500 operating hours and replacement when leakage, misfire, or reduced atomization is detected. Perkins diagnostic tools should be used for post-installation calibration, and only OEM-approved diesel fuel is recommended. Damaged connectors and O-rings must not be reused, and units should be stored in a dry, dust-free environment. A 12-month industrial warranty covers manufacturing defects under standard operating conditions.