The Eaton Fuller Pipe Nipple, part number 18561, is a genuine OEM transmission component designed for use in Eaton Fuller manual transmission applications. Pipe nipples serve as threaded fluid passage fittings within the transmission assembly, maintaining proper fluid routing between internal and external ports. This part is sold individually and is an Eaton OEM piece. If you need help confirming this is the correct fitting for your transmission, give us a call at Pro Gear and Transmission.Interchanges:HF18561FeaturesGenuine Eaton Fuller OEM pipe nipplePart number 18561Designed for Eaton Fuller manual transmission applicationsSold as an individual unitFunctions as a threaded fluid passage fitting within the transmission assembly