Caterpillar original 20R-5075 Common Rail Fuel Injector, Replacement for OEM 456-3545, Steel Diesel Fuel Injector for C9.3 Engine 20R-5079, 460-8213 for Excavator Sprayer Truck original new injector

The Caterpillar 20R-5075 is an original equipment-grade electronically controlled common rail diesel injector purpose-engineered for the CAT C9.3 engine platform. As a critical fuel delivery system component, it is manufactured strictly to Caterpillar OEM specifications, compatible with Tier 3 and Tier 4 emission configurations, and available in new, OEM and remanufactured conditions for global B2B supply with a 12-month warranty.

Built with heat-treated alloy steel and a fuel-cooled structure, the injector supports high-pressure common rail operation at 1800–2200 Bar based on engine load and calibration. Regulated by the engine Electronic Control Module (ECM), the injector activates via electrical signals to execute adjusted injection timing, duration and pilot, main and post injection sequences, delivering precise fuel metering, optimized atomization, improved fuel efficiency, reduced emissions and lower combustion noise. Micron-level machining tolerance and corrosion resistance against water, sulfur and degraded fuel ensure stable performance in severe-duty environments.

It is validated for use across CAT excavators, wheel loaders, motor graders, generator sets, mining equipment and marine auxiliary systems, covering construction, quarry, power generation, industrial and offshore operation scenarios. The listed cross-reference numbers enable quick matching in OEM, dealer and aftermarket spare parts databases, helping maintenance and procurement teams reduce part verification time and equipment replacement downtime.