The rear axle nut is a crucial component for the Citroen 11CV and 15CV, designed to securely fasten the rear axle in place. This part ensures the vehicle's weight is efficiently distributed across the wheels, preventing unwanted movement during driving. With its precise fit and durable materials, this nut contributes to the vehicle's stability and safety. When replacing or maintaining the rear axle, it's essential to use the correct nut to ensure optimal performance of your Citroen.