The bolt for the master brake cylinder in a Citroen 2CV secures the cylinder firmly in place, ensuring the safe operation of the braking system. This essential bolt is designed for optimal strength and durability, contributing to the vehicle's safety and reliability. Suitable for various Citroen 2CV models, this bolt can be easily installed, providing a secure connection without hindering brake performance. Replacing worn or damaged bolts is crucial to maintain the integrity and functionality of the Citroen 2CV's braking system, one of the iconic vehicles in automotive history.