The Muncie 18T39343 is a genuine Muncie bearing spacer designed for use in Muncie power takeoff units. Bearing spacers maintain correct axial positioning of bearings within the PTO housing, preventing lateral movement and preserving gear alignment during operation. This is a direct Muncie replacement part, sourced and sold by Pro Gear and Transmission. If you need help confirming this is the correct spacer for your specific Muncie PTO application, give us a call before ordering.FeaturesGenuine Muncie replacement partPart number 18T39343Bearing spacer for Muncie PTO unitsMaintains proper bearing positioning and axial alignment within the PTO housingSold by Pro Gear and Transmission