4.8. P/S pump lower bolt. W/O DYNAMIC CHASSIS CONTROL. A Bolt which secures the Power Steering Pump pulley to the Power Steering Pump. An exhaust Bolt is a specialized fastener designed to secure various components of an exhaust system, including the manifold, catalytic converter, and exhaust pipes. Exhaust Muffler Bolt. Power Steering Pump Mounting Bolt. Bracket. Exhaust Muffler. Hexagon head. Mounting. Pulley. Support screw.