This differential spider fits Mack differential gear set applications and is built as a replacement part. It sits inside the differential case and holds the pinion gears that mesh with the side gears, letting wheel speed vary between axle shafts through turns. It is sold as a single each unit.Interchanges:32KH230Mack 32KH230A32KH230AP132KH230P1BSD-0792FeaturesDifferential spiderSold pack quantity: 1 EACHFits Mack differential gear set applicationsTech SpecsSell pack: 1 EACHUsed in this Mack modelCRDP 95 / CRD 96 Differential