Caterpillar original Diesel Fuel Injector Pump 10R-0782 178-6342 for 3126B 3126E Engine, for heavy duty diesel engine application, Replacement Excavator Spare Parts original new injector

This CAT-branded 3126-series HEUI fuel injector is a dedicated diesel fuel system component designed for replacement use in specified heavy-duty engine applications. It carries the OE part number 178-6342, and supports a full range of cross-reference part numbers to simplify part lookup and matching for industrial buyers. Offered in original, aftermarket and remanufactured conditions, the unit adheres to original-type fuel system design requirements for its listed fitment scope.

This injector is compatible with CAT 3126, 3126B and 3126E series diesel engines, and fits a wide range of heavy construction and industrial equipment from CAT. Listed compatible equipment includes 120H and 135H motor graders, 938G II and IT38G II wheel loaders, 953C and 963C track loaders, D5N and D6N tractors, and 561N pipelayers. It is also suited for general excavator and construction machinery use cases, including industrial diesel engine repair applications.

For B2B stakeholders such as construction equipment parts distributors, independent repair shops and heavy fleet operators, this injector provides a specification-matched replacement solution for 3126 engine fuel system service. Its wide cross-reference number coverage accommodates varying parts cataloging formats, while its broad equipment fitment covers service demands across multiple common heavy machinery categories. The unit is suitable for scheduled part replacement, engine overhaul projects and repair shop restocking for diesel-powered construction equipment.