Caterpillar original Caterpillar 222-5967 diesel fuel injector new injector original new injector

The Caterpillar 222-5967 HEUI diesel fuel injector is engineered as a direct OE replacement for CAT 3126, 3126B, and 3126E series engines. Designed around the hydraulic electronic unit injection system, the injector delivers precise fuel metering and fine atomization under high pressure, supporting stable combustion across medium-duty trucks, construction machinery, industrial power units, generator sets, mining support equipment, quarry machinery, vocational vehicles, agricultural equipment, and selected marine repower applications. Its direct replacement design allows straightforward installation without modification, restoring factory fueling performance for fleet operators and service workshops.

Built for heavy-duty service conditions, the 222-5967 injector features robust construction, consistent electronic response, and reliable hydraulic actuation compatibility with the 3126 HEUI platform. Each unit supports global cross-reference coverage including 0R-9349, 10R-9238, 173-9267, 173-9268, 196-1401, 126-0499, 131-7150, 173-4059, 169-7411, 218-4109, 164-3355, 0R-4349, 10R-8999, and EX639349, simplifying sourcing for distributors and maintenance teams. Available in both original replacement and remanufactured options, the injector undergoes quality testing to meet OE specifications, offering dependable performance and long-term value for engine overhauls and preventive maintenance programs.

Proper maintenance is essential to maximize injector service life. Operators should use clean diesel fuel, replace fuel filters on schedule, drain water separators, and maintain correct engine oil quality to support hydraulic actuation. Periodic injector balance tests, solenoid resistance checks, harness continuity inspection, and ECM diagnostic scans help identify performance deviations early. Inspection for fuel or oil leaks and inclusion of injector evaluation during major engine service intervals help detect issues such as hard starting, rough idle, power loss, excessive smoke, elevated fuel consumption, or fuel-in-oil conditions before they lead to more extensive engine damage.