Perkins original  169-7411 Fuel Injector Assembly for 3126 3126B 3126E Engine 322C Excavator Common Rail Diesel original new injector

The Perkins 3126 HEUI fuel injector 169-7411 is engineered as a direct-fit replacement component for Perkins 3126, 3126B, 3126E, 3126 ATAAC, 3126 Marine, and 3126 Generator Set engines. Built with Hydraulically Actuated Electronically Controlled Unit Injection technology, this injector delivers high-precision fuel metering to support consistent combustion across demanding operating conditions. It serves construction machinery, industrial equipment, generator sets, marine engines, heavy trucks, commercial buses, mining equipment, and agricultural equipment requiring reliable diesel fuel delivery.

Manufactured to OEM-level performance standards, the injector incorporates a multi-hole nozzle that produces superior atomization, contributing to reduced fuel consumption and lower particulate and NOx emissions. Hardened alloy steel construction combined with precision-machined internal components extends service life under high-pressure HEUI operating cycles. The injection sequence begins with an ECM command, followed by high-pressure oil activating the intensifier piston, which multiplies fuel pressure, opens the injector needle, and delivers finely atomized fuel through the nozzle for efficient combustion.

Routine maintenance includes installing new sealing kits, replacing contaminated fuel filters, verifying HEUI oil pressure, and inspecting wiring harness connectors. An injector cut-out test after installation and periodic ECM diagnostics are recommended to sustain optimal performance. Each unit is backed by a 12-month warranty.