Caterpillar original Diesel Common Rail Fuel Injector 222-5963, High Performance Replacement Part 0R-9348, Cross Reference 10R-0781 for Caterpillar Excavator Engines original new injector

Aligned with CAT’s 3126 engine series part specifications, the 222-5963 diesel fuel injector assembly is categorized as an electronic unit injector for targeted diesel engine models. It carries 222-5963 as its core OE number, and is designed as a replacement for factory-installed injectors on CAT 3126, 3126B and 3126E diesel engines. A full set of listed cross-reference numbers, including 222-5963, 2225963, 10R0957, 10R-0957, 0R8479, 0R-8479 and CAT2225963, supports accurate part matching during procurement.

This heavy-duty diesel injector fits a wide portfolio of diesel-driven equipment across multiple industrial and commercial segments. Documented compatible equipment includes excavators, wheel loaders, trucks, buses, generators, marine equipment, industrial power units and general heavy construction and mining equipment. It also supports power generation systems and marine engine applications, covering use cases in construction, mining, marine operation, industrial power supply and commercial fleet management.

Classified as an OEM-equivalent replacement part, this injector matches the genuine component specification for CAT 3126 series engines. Its standardized OE and cross-reference numbering reduces part matching ambiguity during sourcing, making it suitable for B2B scenarios including equipment maintenance, parts distribution and scheduled engine component replacement. It serves as a dedicated alternative to original injectors for buyers managing 3126 series engine-powered assets.