Perkins original Perkins 10R-9239 replacement diesel fuel injector for C12 C13 engine common rail system  original new injector

The Perkins 3126 fuel injector 10R-9239 is a genuine OEM electronic unit injector engineered for the Perkins 3126, 3126B, 3126E, and C7 engine platforms. Manufactured to original factory specifications, this injector delivers precise fuel metering and high-pressure electronic fuel injection to support efficient combustion across demanding industrial and commercial applications. It is widely used in construction equipment, trucks such as Freightliner, Peterbilt, and Kenworth, school buses, marine propulsion systems, generator sets, agricultural machinery, industrial power units, compressor systems, and mining and power generation equipment.

Built with durable, hardened internal components and corrosion-resistant materials, the 10R-9239 injector assembly provides superior fuel atomization, stable idle operation, and consistent injection performance. It also helps reduce emissions, lower smoke output, and improve overall fuel efficiency, contributing to increased engine responsiveness and longer service life. Cross-referenced with 170-5185, 20R-2057, and 0R-8479, it serves as a direct replacement part for heavy-duty diesel engine fuel systems.

For proper installation, clean the injector bore thoroughly, replace the injector seals, inspect the fuel lines, install new fuel filters, and verify ECM operation. Always follow Perkins service torque specifications and perform an injector balance test after installation. Regular replacement of fuel filters and the use of high-quality diesel fuel are recommended to maintain optimal injector performance and extend engine longevity.