Caterpillar original Fuel Injector 20R-5353 Replacement for OEM 10R-1273 for Caterpillar C32 Diesel Engine Excavator, 294-3500, 10R-9236 Spare Parts original new injector

The Caterpillar 20R-5353 fuel injector is a professional heavy-duty diesel injection component designed as a direct replacement solution for Caterpillar heavy-duty engine platforms, aligned with official OEM performance specifications. It is compatible with Caterpillar C15, C15 ACERT and 3406E diesel engines, as well as application-specific C15 variants built for industrial use, marine propulsion and power generation, with cross-reference support for part numbers 10R-7224 and 10R7224.

Built on the Electronic Unit Injector (EUI) fuel system architecture, the 20R-5353 incorporates precision nozzle engineering, high-pressure injection technology, hardened wear-resistant parts and corrosion-resistant materials, with factory-calibrated fuel delivery out of the box. It delivers precise fuel metering and optimized atomization to support consistent combustion efficiency, maintained horsepower output, improved fuel economy, reduced particulate emissions, stable idle operation and faster throttle response.

This versatile injector supports a broad portfolio of heavy-duty equipment across construction, mining, marine, power generation, oilfield and transportation sectors, including highway trucks, mining trucks, excavators, wheel loaders, generators and oilfield machinery. It is available in new or remanufactured condition, meets strict OEM quality standards, and includes a 12-month warranty to help operators reduce unplanned downtime and lower long-term maintenance costs.