Genuine BMW Steering Knuckle - 31216762017 - This genuine BMW steering knuckle is designed to provide superior steering and handling performance for your BMW. Made from high-quality materials, this steering knuckle is built to last and provide reliable performance. It is designed to fit the following BMW models: 3 Series (E90/E91/E92/E93), 5 Series (E60/E61), 6 Series (E63/E64), X3 (E83), X5 (E53), Z4 (E85/E86).