The Muncie N640521 is a genuine Muncie spline component designed for Muncie power takeoff applications. Spline parts serve a critical function in transmitting torque between the PTO and driven equipment, making correct part identification essential before ordering. Pro Gear and Transmission carries this Muncie part for customers sourcing hard-to-find PTO drivetrain components. If you need to verify this spline fits your specific Muncie PTO model or output configuration, call us before ordering and we will help you confirm the right part for your application.FeaturesGenuine Muncie spline componentPart number N640521Designed for Muncie power takeoff (PTO) applicationsCritical torque-transmission drivetrain partSold by Pro Gear and Transmission