The lock nut for the pinion shaft of the Citroën 2CV is a crucial fastening element that ensures the pinion shaft remains securely in place. This high-quality nut is designed to fit the specific shaft configuration of the iconic 2CV, ensuring reliable and durable operation. It is essential for maintaining vehicle stability and preventing unwanted movement of shaft components. For those looking to keep their classic 2CV in top shape, regularly inspecting and replacing this lock nut when necessary is a small but significant step.