Caterpillar original 10R-1262 10R1262 Diesel Common Rail Fuel Injector for 3126B 3126E 3126 C7 Truck Engine Replacement for 0R-9348 222-5926 original new injector

The CAT 10R-1262 remanufactured HEUI diesel fuel injector is engineered as a direct OE-style replacement for Caterpillar 3126, 3126B, and 3126E engines produced between 1995 and 2004. It is compatible with cross-reference numbers 222-5963, 203-3771, 204-6714, and EX631262, allowing diesel repair shops and engine rebuilders to consolidate inventory under a single proven part. The hydraulic electronic unit injection design uses high-pressure engine oil to actuate the injector while the ECM precisely controls injection timing and fuel delivery, improving power output, idle quality, fuel atomization, and overall combustion efficiency across heavy duty and medium duty applications.

This reman HEUI injector is built to support professional diesel service operations including fleet maintenance, truck service centers, construction equipment repair, and industrial parts distribution. It is widely used in core-exchange programs and aftermarket export channels across North America, Latin America, the Middle East, Africa, Southeast Asia, and Europe. The broad cross-number coverage of 10R-1262, 10R1262, 2225963, 2033771, 2046714, and EX631262 simplifies sourcing for distributors serving multiple CAT 3126 platforms, reducing part number complexity while maintaining reliable diesel performance.

Before installation, technicians should verify the original injector number, engine serial number, and cross-reference match, then inspect the injector bore, replace all O-rings and seals, clean fuel and oil passages, and follow the correct torque procedure. After installation, prime the system, scan for diagnostic trouble codes, and perform a cylinder balance or contribution test to confirm proper operation. Routine maintenance should emphasize clean fuel, clean engine oil, proper filtration, intact electrical connectors, and timely replacement of fuel and oil filters to maximize injector service life.