The Arnott Industries Air Strut (E65 E66) - AS2978 is a high-quality replacement air suspension strut designed for use in BMW E65 and E66 models. It is a direct fit replacement for the original equipment and is built to meet or exceed the performance of the OEM part. This air strut features a durable rubber bladder and high-strength steel construction for long-lasting reliability. It also includes an integrated air spring and shock absorber for improved ride comfort and handling. The AS2978 is designed to be easy to install and provides a cost-effective solution for restoring the suspension system of your BMW.