Caterpillar original 222-5967 0R-9349 Common Rail Fuel Injector Diesel Fuel Injection for Excavator 20R-8758 Replacement for Compatible 3126E 3126B Diesel Engine Rail Application original new injector

This CAT-branded 222-5967 fuel injector is a dedicated original equipment replacement component designed for the 3126 engine product series. Compatible with 3126, 3126B and 3126E diesel engines, it is a HEUI-type unit injector designed to integrate with the engine’s factory diesel injection system. It is intended for heavy-duty truck and industrial equipment use cases, delivering a direct fit for scheduled maintenance and failure replacement workflows without custom modification requirements.

The unit supports broad cross-reference compatibility to simplify part matching for buyers operating across multiple part numbering systems. Its full cross number list covers hyphenated and non-hyphenated number formats, plus CA-prefixed and EX-prefixed variants, including core identifiers such as 0R-9349, 10R-9238, 173-9267, 196-1401 and 126-0499. This extensive mapping reduces incorrect order risks and lets teams source the correct part using their existing inventory or documentation part numbers.

Aligned with industrial and heavy-duty aftermarket needs, this replacement injector is suited for diesel parts distributors, fleet maintenance teams and industrial equipment service providers. Its clearly defined application scope and standardized part identity streamline bulk inventory planning, repair job quoting and service part sourcing processes. It serves as a dedicated service replacement solution to support intended fuel injector function for compatible 3126 series engine platforms.