Caterpillar original 10R-8502 Common Rail Fuel Injector for Caterpillar C10 C11 C15 C16 Engine Replacement for OEM 211-3023, 253-0617 for Excavator E365C Cross Reference 10R-8500 original new injector

The 10R-8502 (alternatively formatted 10R8502) is an industrial-grade electronic unit diesel fuel injector engineered for heavy-duty Caterpillar engine platforms, with core compatibility across C15, 3406E, and C16 diesel engine lines. It aligns with common engine serial number prefixes including 1LW, 2WS, 5EK, 6NZ, 6TS, and MBN, though final fitment must be verified against the engine’s serial number, existing injector part number, and engine arrangement code before ordering to avoid compatibility issues.

As a Caterpillar-specific EUI component, it is built to deliver precise fuel metering, consistent atomization, stable idle performance, reliable combustion, and extended service life even under demanding operational cycles. Official Cat Reman variants are developed exclusively for Caterpillar engines and optimized to run on modern low-sulfur, low-lubricity diesel fuels, while rebuilt, aftermarket, and original-type replacement units are available to meet diverse budget and maintenance needs.

This injector supports a broad range of heavy-duty use cases, spanning long-haul trucking, construction, mining, industrial power, oilfield service, marine auxiliary power, power generation, and agricultural equipment, as well as diesel engine repair and replacement markets. It is available for order as a single unit, full set of six injectors, or in bulk quantities, with optional neutral or brand packaging to suit distributor, repair shop, and fleet maintenance procurement requirements.