Damper mount bolt. W/ELECTRONIC STABILITY. A threaded rod with a drive head (such as hex, 12 point, torx, etc) on one end used to secure the Differential Housing Mount to it's Mounting point. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the CV Axle Shaft Damper to it's Mounting point. Differential. Drive Shaft. HEX Flange HEAD. Prop Shaft.