6.8800" bore diameter 5.750" housing length 8spline on inside dia; inside dia counterbored right end, 7.480 in. min 7.482 in. max dia; internal flange left end, 6.500 in. min 6.504 in. max dia, 0.620 in. w; two threaded mounting holes, 1.000 in. dia, 180 degrees apart on 13.000 in. dia bolt circle anodize housing surface treated