The Muncie 18T38739 is a Bearing Spacer listed in the official FA6B Series PTO service parts document (SP11-03_FA6B_PTO_Service_Parts.pdf). The part is dimensioned at 0.1065″/0.1045″ and is a direct-fit service replacement within the FA6B Series Power Take-Off. The Muncie FA6B is a clutch-shifted PTO designed for Allison and Aisin 6-bolt transmissions, using an angular housing to route the output clear of chassis obstructions. If you need to confirm this spacer is correct for your specific FA6B configuration, call us at Pro Gear and Transmission.FeaturesGenuine Muncie service part number 18T38739Bearing Spacer dimensioned at 0.1065″/0.1045″Listed in Muncie FA6B Series PTO service parts document SP11-03_FA6B_PTO_Service_Parts.pdfFits the FA6B Series PTO – designed for Allison and Aisin 6-bolt transmissionsAngular housing design routes output below chassis obstructionsTech SpecsBearing Spacer Dimension: 0.1065″ / 0.1045″PTO Series: Muncie FA6BTransmission Compatibility: Allison and Aisin 6-boltShift Type: Solenoid-activated clutch shiftMounting: Remote and direct mount models availableUsed in this Muncie PTO modelFA6B Series