The rocker cover stud M9 is a crucial fastening component for the Citroen 11CV and 11D models, designed to securely hold the rocker cover in place. This part ensures proper alignment and sealing of the rocker cover to prevent leaks. Made from durable material, it offers resistance to heat and corrosion, essential for engine performance. The specific design and dimensions of the stud make it perfectly suited for the Citroen engine, ensuring long-lasting stability and reliability. A necessary component for any restoration or repair of these classic vehicles.