original 155-1819 High Pressure Fuel Injector 177-4754 222-5965 154-3337 156-4727 for 3126B C7 7.2L Excavator Truck Engine Spare original new injector

The 3126 Electronic Unit Injector OEM 155-1819 is engineered as a direct-fit replacement for 3126, 3126B, and 3126E diesel engines used across construction, marine, power generation, and heavy-duty transportation equipment. Designed and manufactured to OEM equivalent specifications, this injector delivers precise fuel metering, high-pressure atomization, and consistent spray patterns to maintain original engine performance standards. It serves as a reliable cross-reference solution for part numbers 157-3727, 173-1012, 173-4566, 173-9379, 188-1320, 222-5965, 145-9360, 0R-9348, EX639348, and OR9348, providing a comprehensive replacement option for maintenance operations on 3126 platforms.

Constructed from hardened alloy steel with precision-machined internal components, the 155-1819 injector is suitable for excavators such as the 315, 317, and 318 models, IT28G wheel loaders, diesel generator sets, commercial marine vessels, medium and heavy-duty trucks, and various industrial power packs. Each unit is 100% performance tested before shipment to verify spray pattern, flow rate, solenoid response, and leak-tightness under simulated operating conditions. Both new and remanufactured options are available, backed by a 12-month warranty to support B2B procurement requirements and long-term fleet reliability.

Key benefits include increased fuel efficiency, reduced fuel consumption, lower exhaust emissions, improved power output, better cold-start performance, and reduced engine noise. For proper installation, clean the injector bore thoroughly, replace the copper sealing washer, lubricate O-rings, apply OEM torque specifications, and bleed the fuel system before startup. Regular use of clean diesel fuel, scheduled fuel filter replacement, and periodic inspection of fuel lines will help maintain consistent injector performance and extend service life across demanding 3126 engine applications.