The Fuel Injection Throttle Body Seal by ACDelco is a genuine GM Original Equipment part designed specifically for select GM vehicle models. This high-quality seal is made with durable materials to ensure a secure fit and reliable performance. With a diameter of 4 inches, this seal is designed to fit perfectly and maintain proper function of the throttle body in your vehicle. Manufactured by ACDelco, this OE part number 12576549 is a dependable choice for your car or truck's fuel injection system.