This main shaft bearing fits Mack T2130 13 Speed, T2180 18 Speed, and T2080B 8 Speed transmissions, measuring 12.001 in. x 12.001 in. x 1.02 in. It supports smooth shaft rotation under load within the transmission. Sold each.Interchanges:214S2L0035353346R9146AX516700518R91700519R91700520R91708235R91842473R91GMC Truck 907514Mack 25101833Navistar 272574R91GBG-6594FeaturesMain shaft bearingFits Mack T2130 13 Speed transmissionFits Mack T2180 18 Speed transmissionFits Mack T2080B 8 Speed transmissionDimensions: 12.001 in. x 12.001 in. x 1.02 in.Sold in packs of 1 EACHTech SpecsWidth: 12.001 in.Height: 12.001 in.Length: 1.02 in.Sell pack: 1 EACHAdditional InformationFits Mack T2130 13 Speed, T2180 18 Speed, and T2080B 8 Speed transmissions.Used in these Mack modelsT2080B TransmissionT2130 / T2180 Transmission