90-97 Mercedes Benz USED original equipment gas cap. Perhaps yours is lost, damaged or otherwise unusable. Do not devalue your car with a sub-standard replacement cap that screams cheapskate. Will be sent first class mail with tracking. You can't beat original Merced Benz parts. At least four available. Price is for one. I apologize for my photographic limitations. Made by Blau. You will receive a clean ready to use gas cap with an intact seal. (No warranty on the seal but they are replaceable.) Sorry no tether. Thank you for your interest.