XDP Tow Series Flex Plate 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML Allison A1000The XDP Tow Series Flex Plate XD644 is an outstanding upgrade for your workhorse diesel truck. If your truck is used for constant heavy duty towing, it's only a matter of time before your factory flex plate fails. Modifications and continuous heavy hauling add further strain to the flex plate that can result in heat spots from the torque converter. These heat cycles can cause these heat spots to crack and even cause the center of the flex plate to