Caterpillar original C7 C9 Engine Fuel Injector 20R-8968 Cross Reference 10R-4761, 254-4339 for E325D E329D E330D E336D Excavator Replacement for OEM 387-9427 original new injector

The 20R-8968 is a genuine CAT Reman diesel fuel injector engineered exclusively for Caterpillar C9 engine platforms, functioning as a direct OE replacement for 557-7633 and a verified cross-reference for 20R-8064. As a critical fuel system component, it delivers precisely metered, atomized diesel fuel into the combustion chamber at the exact timing and pressure required to maintain stable combustion, smooth idle and reduced misfire risk for C9-powered equipment.

Manufactured per Caterpillar’s formal Reman specifications, the injector uses specialized metallurgy and proprietary production processes, with targeted engineering updates and full reliability testing to guarantee like-new performance. A correctly fitted unit supports improved fuel efficiency, consistent torque output, reduced smoke and emissions, and sharper engine response, helping fleets and repair providers reduce unplanned downtime and support long C9 engine wear life.

It fits a broad range of C9-driven heavy equipment, including 330D/336D series excavators, 140M/160M motor graders, wheel dozers, scrapers and industrial generator sets deployed across construction, mining, forestry, road-building, petroleum and material handling sectors. Because C9 configurations vary by engine serial number, machine arrangement and regional emissions specifications, purchasers must verify their old injector part number and equipment serial number before ordering to confirm compatibility.