Genuine OEM BMW Exhaust Support Rubber Ring, part number 18211105635. This rubber ring is designed to provide flexible support for the exhaust system, isolating it from the vehicle chassis. It absorbs vibrations and reduces noise transmission, contributing to a quieter and smoother ride. Made from durable, heat-resistant rubber to withstand exhaust system temperatures. Genuine OEM parts ensure the correct elasticity and durability for effective exhaust system support and longevity.