Caterpillar original High Pressure Diesel Engine Fuel Injector for CAT C9 Primary Part 20R-9433, Cross Reference 553-2592, Replacement for OEM 20R-8968, 235-9649, Excavator Parts original new injector

For fleet maintenance managers and equipment parts purchasers sourcing reliable fuel system replacements for Caterpillar C9 engine platforms, this CAT-branded diesel injector assembly delivers matched heavy-duty performance. Designed for C9 and C9 ACERT diesel fuel delivery systems, it enables precise fuel metering, consistent diesel atomization into the combustion chamber, stable engine combustion, reduced exhaust smoke, restored power response, and reliable support for starting and idle performance across harsh off-highway work conditions.

This injector is market-associated with in-demand CAT heavy equipment including 330D, 330D L/LN, 336D, 336D L and 340D excavators, as well as C9-powered construction machinery, mining equipment, oilfield facilities, industrial power packs, generator sets, pump drives and compressor packages. It belongs to the widely referenced C9 injector family with cross numbers including 387-9433, 10R-7222, 557-7633, 20R-8064, 20R-8968, 328-2574, 293-4072, 267-3360 and 254-4339, though these references are not universally interchangeable.

A mandatory compatibility notice applies to the primary search number 20R-9433: official Caterpillar Parts data currently categorizes 20R-9433 as a reman differential and bevel gear group, not a fuel injector. All customers must verify fitment via engine serial number, original injector body number, old injector number, ECM trim code, and official Caterpillar SIS or authorized dealer confirmation prior to shipment to prevent mismatched orders.