When you call or e-mail TowHaul Parts or Support with a request for parts or service, the first question that you will be asked is which TowHaul serial number you are inquiring about. To ensure that we are providing you with the correct information regarding your parts, we need to confirm the serial number. TowHaul Serial Plates are located on both the Gooseneck and the Lowboy on the driver’s side of the equipment. These illustrations are found in your TowHaul Operation Manual.