Caterpillar original Common Rail Fuel Injector Cross Reference 456-3493 20R-5076 20R-5072, Primary Part 20R-5073, Replacement for Compatible Units, For C9.3 Engine, Sprayer original new injector

The Caterpillar (CAT) 20R-5073 is a precision-manufactured high-pressure common rail diesel injector engineered specifically for CAT C9.3 series engine platforms, including the C9.3, C9.3B, C9.3 ACERT, C9.3 generator engine, and industrial C9.3 power unit. Built to strict OEM specifications as a direct-replacement fuel system component, it is available in new and remanufactured conditions, with verified cross-reference part numbers 456-3589, 4563589, 382-0709, and 3820709 to streamline part sourcing and matching.

The injector incorporates advanced nozzle technology, high-strength alloy steel construction, precision-lapped nozzle assemblies, and factory-calibrated control valves to deliver accurate fuel metering and optimized spray atomization. Its wear-resistant, corrosion-resistant, and high-temperature durable internal components support extended service intervals, while operational benefits include stable idle performance, faster throttle response, improved power output, reduced fuel consumption, and lower black smoke emissions for enhanced overall combustion efficiency.

Validated for heavy-duty use across construction, mining, industrial power generation, marine, and agricultural sectors, it fits equipment including excavators, loaders, graders, mining trucks, generator sets, compressors, marine power units, and heavy agricultural equipment. Backed by a 12-month warranty and compatible with standardized fuel system maintenance routines, it is a reliable, cost-effective replacement solution for parts distributors, fleet operators, and equipment maintenance teams servicing CAT C9.3-powered assets.