The Muncie HN-16 or HN16 is a genuine Muncie nut designed for use with Muncie power takeoff (PTO) units. Muncie PTOs are widely used across medium- and heavy-duty truck applications, and replacement hardware such as this nut is essential for keeping those units properly assembled and serviceable. If you need help identifying whether this is the correct nut for your specific Muncie PTO model, give us a call at Pro Gear and Transmission and we will help you confirm proper fit.FeaturesGenuine Muncie part number HN-16 or HN16Replacement nut for Muncie PTO unitsCall Pro Gear and Transmission to confirm fitment for your specific Muncie PTO model