Starter Drive 9-Tooth CW 10-Splines "157","208","211","311" & "314" DD - 25.5mm Gear OD x 12mm ID x 64mm OAL; has Splines inset 3.5mm from the end of Drive; BO2-5041C flush to end (4-345;16299, 16353, 16360, 16414, 16416, 16417, 16443, 16462, 16531, 16534, 16538, 16539, 16550, 16557, 16619, 16683, 16781, 16954, 17031, 17162)