The Muncie 21T37991 is a genuine Muncie lock washer designed for use in Muncie Power Takeoff assemblies. Lock washers serve a critical retention function, securing fasteners against vibration and loosening in demanding PTO operating conditions. This part carries the direct Muncie part number 21T37991, making it the correct factory-specified replacement for applications that call it out. Pro Gear and Transmission stocks genuine Muncie PTO parts including small but essential hardware like this lock washer. Not sure this is your part? Give us a call to confirm proper fit for your application.
Features
Genuine Muncie part number 21T37991
Lock washer for Muncie Power Takeoff (PTO) assemblies
Provides fastener retention against vibration in PTO applications
Direct OEM part number reference for precise replacement
Sold by Pro Gear and Transmission
