The Muncie 401063000 is a replacement washer designed for use in Muncie power takeoff units. Washers in PTO assemblies serve as precision spacers and load-bearing interfaces between rotating and stationary components, making correct part identification critical to proper assembly. If you are unsure whether this is the right washer for your specific Muncie PTO unit, Pro Gear and Transmission carries a broad range of Muncie PTO components and our staff can help you verify the correct part for your application. Call us before ordering if you have any questions about fit.FeaturesGenuine Muncie replacement partPart number: 401063000Designed for use in Muncie PTO assembliesCall Pro Gear and Transmission to confirm fitment for your specific PTO unit