This housing cover O-ring fits the differential housing joint on Mack T2130 and T2180 units and comes in a 10-piece pack. It seals the mating surfaces at the cover to keep gear oil from leaking out under pressure. Each pack supplies enough seals for multiple housing cover jobs on these Mack differentials.Interchanges:251066314103-5000823147446GC120556AX558Mack 20705274This unit is sold in packs of 10.FeaturesHousing cover O-ring for T2130 and T2180 differentialsSold as a pack of 10 piecesUnit of measure: each, packaged in a 10-piece packTech SpecsApplication: T2130/T2180 differential housing coverPack quantity: 10 piecesUsed in these Mack modelsT2070A / T2070C TransmissionT2070B / T2070D TransmissionT2080B TransmissionT2110B / T2110D TransmissionT2130 / T2180 TransmissionT309L / T310 TransmissionT310M TransmissionT313L / T318L Transmission