The Eaton Fuller O Ring, part number X8870744, is a genuine Eaton Fuller transmission component used in manual transmission applications. O rings are critical sealing elements in Eaton Fuller gearboxes, preventing fluid migration between transmission sections and maintaining proper lubrication throughout the drivetrain. This part is also cross-referenced as HFX8870744. Sold individually. Pro Gear and Transmission carries genuine Eaton Fuller parts for professional fleet and shop use. Not sure this is the right seal for your application? Give us a call to confirm proper fit before ordering.FeaturesGenuine Eaton Fuller manual transmission sealing componentPart number X8870744, also cross-referenced as HFX8870744Designed for Eaton Fuller manual transmission applicationsSold individually (each)For use in heavy-duty drivetrain and gearbox assemblies