The bolt for the crown wheel of a Citroen 11CV is a critical fastening component that ensures the connection between the crown wheel and the car's differential. This specifically designed bolt is crucial for the proper operation of the transmission, allowing smooth gearing and the translation of engine power to the wheels. Made from durable material, this bolt offers high strength and reliability, essential for maintaining classic cars like the Citroen 11CV. Proper installation is necessary to ensure optimal performance and safety of the vehicle.