Perkins original Perkins 127-8216 Mechanical Fuel Injector for 3114 3116 C3116 Engine E320B E322B E325B Excavator Diesel Parts new injector original new injector

The Perkins 127-8216 mechanical unit injector is engineered for Perkins 3116 and 3114 diesel engines, also fitting 3116DIT, 3126, 3126B, and selected C7 applications. Featuring an 8mm plunger and Perkins Dual Scroll Unit Injector architecture, this part delivers accurate fuel metering, stable atomization, and correct injection pressure and timing for demanding construction and industrial operations. It is a direct-fit replacement suitable for excavators 320B through 325B, M318, M320, M325B, wheel loaders 924F, 928G, 938F, 938G, 950F II, track loaders 953C, 963B, 963C, motor graders 120H, 135H, track-type tractors D5M, D6M, and the full range of Caterpillar-perkins powered asphalt pavers, vibratory compactors, wheel tractor scrapers, and toolcarriers listed in the fitment table.

This injector is built to OE-style specification with heavy-duty internal components, contributing to improved fuel economy, faster engine response, lower exhaust smoke, and balanced cylinder delivery. It is offered in new, aftermarket, and remanufactured options with a set-of-6 availability, giving distributors and fleet operators flexible sourcing for single-unit repair or full-engine overhaul. The mechanical design removes dependence on electronic control while maintaining the metering precision required for compliant emissions and reliable cold starting under load.

During installation, technicians should drain the water separator, replace the fuel filter, verify the part number against the engine data plate, and use a calibrated injector bench test to confirm spray pattern and opening pressure. If multiple injectors show wear, high fuel consumption, hard starting, rough idle, black or white smoke, or diesel knock, a full set replacement is recommended to restore cylinder balance and prevent repeat failure.