222-5972 Ca-terpillar Diesel Fuel Injector

222-5972 HEUI Fuel Injector for Ca-terpillar 3126, 3126B and 3126E Diesel Engines

222-5972 Fuel Injector is a hydraulic electronic unit injector (HEUI) designed for selected Ca-terpillar 3126, 3126B and 3126E diesel engine applications. It uses high-pressure engine oil and electronic control to pressurize, meter and inject fuel accurately, supporting stable combustion, efficient fuel use and reliable engine performance.

It is suitable for selected commercial trucks and industrial equipment powered by compatible Ca-terpillar 3126-series engines. Exact compatibility depends on the engine serial number, power rating and injector calibration. Please verify the original injector number, engine serial number, arrangement number and equipment model before ordering.

222-5972 HEUI Fuel Injector is designed as a direct-fit replacement for the correct engine configuration. Its commonly associated Cat Reman reference is 0R-9350, while 10R-9239 is an associated remanufactured six-injector kit. Other frequently listed replacement or cross-reference numbers include 141-7837, 169-7410, 173-1013, 173-9272, 196-4229 and EX639350. Professional installation, replacement of all injector seals and any required ECM calibration should follow the applicable engine service manual.

Manufactured with wear-resistant precision components and a reliable sealing structure, this injector withstands continuous vibration and demanding working conditions. It helps address hard starting, unstable idle, power loss, excessive fuel consumption and black smoke.

Every  Fuel Injector we supply undergoes professional bench testing. Injection quantity, spray pattern, sealing performance and operating stability are inspected to ensure reliable fuel delivery and consistent engine performance.