The Muncie 18T38640 is a cone-style spacer bearing used in Muncie power take-off units. Muncie’s own service parts documentation identifies this part as a bearing spacer with a dimension of 0.983″/0.981″, distinguishing it from the closely related 18T38647 spacer, which carries a smaller 0.962″/0.960″ dimension. Selecting the correct spacer by part number is critical, as these two parts differ only by a few thousandths of an inch. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.FeaturesCone-style spacer bearing, Muncie part number 18T38640Dimension: 0.983″ / 0.981″Distinct from related spacer 18T38647 (0.962″/0.960″) – verify part number before orderingDesigned for use in Muncie power take-off assembliesGenuine Muncie part sold by Pro Gear and TransmissionTech SpecsPart Number: 18T38640Part Type: Cone Spacer BearingDimension: 0.983″ / 0.981″Related Part: 18T38647 (Spacer Bearing, 0.962″/0.960″)Brand: Muncie Power ProductsUsed in these Muncie PTO modelsCB6 SeriesCB8 SeriesCS6 SeriesCS8 SeriesSH6 SeriesSH8 Series