The Muncie 12T36873 is a genuine O-ring service part appearing in two Muncie PTO service parts documents: the HS24 Series PTO (position 45) and the RG Series PTO (position 17A). O-rings at these positions maintain fluid seals within the PTO assembly, making this a critical replacement item during PTO service or overhaul. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your specific Muncie PTO application.Interchanges:775312T36873FeaturesGenuine Muncie service part number 12T36873Fits Muncie HS24 Series PTO (service document position 45)Fits Muncie RG Series PTO (service document position 17A)Sold individually (unit of measure: each)Used in these Muncie PTO modelsHS24 SeriesRG Series