The Eaton Fuller O Ring, part number 5568541, is a genuine Eaton Fuller manual transmission component used in sealing applications within Fuller-series transmissions. O rings in these assemblies maintain fluid integrity at critical interfaces, preventing leaks that can lead to premature wear or component failure. This part is sold individually. If you need help confirming this is the correct O ring for your transmission, call Pro Gear and Transmission and we can help verify the application before you order.FeaturesGenuine Eaton Fuller OEM partPart number: 5568541Designed for Fuller manual transmission applicationsSold as individual unitDirect OEM replacement for sealing interfaces in Fuller-series transmissions