A sliding window assembly for a vehicle includes an upper track member, a lower track member, and a carrier component. The track members each define a first channel having a first depth, a second channel having a second depth, and a third channel having a third depth less than each of the first and second depths. The carrier component includes upper and lower edges. Each edge has a first tab extending to a first length and a second tab extending to a second length. The carrier component slides in the track members to move between an open and a closed position. The first tabs slide in the first channels, the second tabs slide in the second channels, and the edges of the carrier component slide in the third channels. The first lengths correspond to the first depths and the second lengths correspond to the second depths so the tabs appropriately fit in their respective channels.