The nut for the rear axle bearing of the Citroen 15CV HYD/DS/ID is a crucial component that ensures the secure fastening of the bearing components. This specific auto part is designed for Citroën models like the HYD, DS, and ID, known for their hydropneumatic suspension. The nut contributes to a smooth driving experience by ensuring the stability and alignment of the rear axle. Made from durable materials, it withstands the stress during driving and aids in maintaining overall vehicle performance. Regular maintenance and timely replacement are vital for optimal safety.