The bushings in this frame oftentimes crack with age, making the airbag unsecure and unsafe for deployment. If you notice the center horn pad is at all loose, inspect this frame for wear and replace it accordingly.
993-347-088-01-M100
Air Bag Retaining Frame for Steering Wheel (fits 4-spoke steering wheels ONLY), 911/911 Turbo (1996-98) Brand: Genuine Porsche [More Info]
