Caterpillar original Engine Diesel Fuel Injector 20R-8045 for C13 C15 C18 GENSET Excavator Truck, Replacement for OEM, with Cross References 10R-3262, 20R-8046, 249-0713 original new injector

For diesel parts distributors, fleet operators and engine rebuilders seeking a reliable C13 fuel system component, the 20R-8045 Caterpillar diesel fuel injector assembly delivers OE-grade performance. Listed officially as a Cat Reman Fuel Injector by Caterpillar, it is engineered to release precise fuel volumes at exact injection timings to support combustion, and is compatible with low-sulfur, low-lubricity diesel fuels. It handles core fuel metering, atomization and combustion control functions for consistent engine operation.

This injector is purpose-built for Caterpillar C13 engine platforms, covering C13 ACERT, 12.5L industrial, on-highway and generator set variants, as well as the broader C11/C13 injector family. It fits heavy-duty trucks, excavators, loaders, construction machinery and stationary power generation equipment. It is available in new replacement, original reman style and aftermarket build conditions, with single-unit, 6-piece set and bulk packaging options for wholesale and service use.

As C13 engines use different injector part numbers across emission tiers, arrangements and production years, always verify fitment via engine serial number, original injector tag, ECM calibration and official CAT parts lookup before ordering. Professional installation by a trained diesel technician is required. The unit stabilizes fuel delivery, improves combustion, reduces misfire risk and restores full engine performance for repair, rebuild and fleet replacement programs.