Caterpillar original Common Rail Fuel Injector 348-4090 Cross Reference 332-1419 for C13 Engine Excavator E345C E349D Replacement for OEM 20R-2437 Diesel Parts original new injector

For procurement and maintenance teams managing Caterpillar C13 engine assets, the 348-4090 (numeric format: 3484090) is a CAT-branded common rail diesel fuel injector, also designated as Injector GP-Fuel for diesel fuel injection systems. Engineered for heavy-duty diesel operation, it delivers precisely metered fuel to support consistent atomization and reliable combustion control, with industrial-grade construction to withstand demanding work conditions. It is purpose-developed for the C13 engine series, with public parts catalogs linking the part to core C13 industrial, generator, and petroleum power train configurations.

The injector supports a broad range of C13-powered equipment, including industrial engines, XQ350 rental generator sets, CX31-series petroleum power train packages, construction machinery, and E345C/E349D excavators (specific excavator fitment requires serial number confirmation). It acts as a direct OE-number-matched replacement solution for professional diesel repair shops, engine rebuilders, fleet maintenance teams, construction parts distributors, generator service providers, and global aftermarket spare parts suppliers, with verified cross-reference numbers to support alignment with existing part numbers.

Stock may be supplied as original-type, new aftermarket, remanufactured, or replacement variants depending on inventory, so buyers should confirm their required condition prior to purchase. All orders require compatibility verification via engine model, engine serial number, equipment model, old injector part number, fuel system type, and injector appearance. For critical fitment scenarios, validation through official CAT parts channels via serial number lookup is strongly recommended to avoid mismatched parts.