This product is a genuine exhaust muffler designed specifically for the left side of a Porsche 911 (model 997). The part number for this muffler is 99711131131. It is a high-quality, OEM replacement part that is manufactured by Porsche to ensure proper fit and function. This muffler is designed to improve the performance and sound of the vehicle's exhaust system. It does not include any newline characters and can be used as input in another API call.