Premium GKN V2 Limited Slip Differential Collar: Precision-Fit for Enhanced Durability | Compatible with BMW E46 M3, E90/E92 M3, E60 M5, E63 M6, Z4 M Models Exceptionally designed for a precise fit and enhanced durability, our collar is the ideal solution when the factory part is damaged during removal and an OEM replacement isn’t available. Suitable for the following models: BMW E46 M3 (2005 and 2006) BMW E90/E92 M3 BMW E60 M5 BMW E63 M6 BMW Z4 M Manufactured from superior tool steel, nitrated to amplify strength and endurance, this collar secures the internals and seamlessly closes the LSD unit, ensuring optimum performance and longevity. Note: A specialized tool is required to open the collar, conveniently available for purchase in our shop. Elevate your driving experience with a collar that promises uncompromised quality and exceptional performance.