Perkins original Perkins 4CR0197 Fuel Injector for Perkins 3126 3126B Diesel Engine Common Railoriginal new injector

The Perkins 4CR0197 HEUI diesel fuel injector is engineered for the 3126, 3126B, and 3126E engine family, a 7.2-liter inline six-cylinder four-stroke platform widely used in medium-duty on-highway and off-highway applications. Operating within the HEUI fuel system, the injector relies on high-pressure engine oil for hydraulic actuation while the ECM precisely controls injection timing and fuel quantity, ensuring stable combustion, efficient atomization, and responsive engine performance under varying load conditions.

This injector is a direct replacement assembly suitable for medium-duty trucks, school buses, transit buses, RVs, excavators, construction machines, industrial power units, generator sets, and selected marine engines. It cross-references with multiple OE and replacement numbers including 0R-9350, 10R-1267, 173-4059, 156-8895, 177-4754, 10R-0782, 128-6601, 222-5966, 180-7431, 171-9710, 171-9704, 232-1183, 2C0273, 10R-0197, 169-7410, 10R-1306, 174-7526, 198-4752, 188-1320, 10R-9237, 173-9379, and 10R-0781, simplifying sourcing for fleet operators, engine rebuilders, and diesel repair businesses across North America, Latin America, Europe, the Middle East, Africa, Southeast Asia, and Australia.

Designed to reduce vehicle downtime and improve repair efficiency, the 4CR0197 is available as new, original quality, remanufactured, rebuilt, or aftermarket stock. Proper installation requires cleaning the fuel and oil systems, replacing seals and O-rings, lubricating O-rings with clean engine oil, and following official Perkins torque specifications. After installation, bleeding the fuel system, scanning for ECM fault codes, and verifying idle and acceleration performance ensure reliable long-term operation.