The Muncie 43TK5387 is an orifice kit designed for the Muncie 828S series air shift power takeoff. Orifice kits regulate airflow within the pneumatic shift circuit, and this kit is the manufacturer-specified service part for that application on the 828S PTO. If you are servicing an 828S air shift unit and need to restore proper shift response, this is the correct Muncie kit for that job. Pro Gear and Transmission carries genuine Muncie PTO parts. Call us to confirm this kit is the right fit for your specific 828S configuration before ordering.FeaturesGenuine Muncie orifice kit, part number 43TK5387Designed for Muncie 828S series air shift PTO unitsRegulates airflow in the pneumatic shift circuitManufacturer-specified service replacement kitCall Pro Gear and Transmission to confirm fit for your 828S application