Product Description
2-wheel-drive extension housing metal-clad seal for Allison 1000, 2000 and 2400 (01-19) transmissions, MT640, MT643, MT644, MT647, MT650, MT653 and MT654 (1972-93) transmissions, and AT540, AT542, AT543, AT545 and AT1545 (1970-01) transmissions.
It carries OEM part number 29536379 and seals the extension housing on the 2-wheel-drive versions of these transmissions.