Save on ATP Automatic Transmission Flex Plate Z-422 at Advance Auto Parts. Buy online, pick up in-store in 30 minutes Most flex plates are made of a thick piece of sheet metal with bolt holes for the torque converter and teeth for the starter. The job of a flex plate is to allow for expansion of the torque converter as engine RPM increases. The flex plates connects the engine and transmission. Engine Flexplate Replacement Flexplates For Sale | Buy Auto Transmission Flexplates - Ubuy Nigeria Automatic Transmission Flexplate Balanced factory specifications · Part Number Z-422 · Package Weight 4.0 lbs · Package Dimensions A damaged flex plate can create serious (expensive) damage. Vehicles with automatic transmissions have a flex plate. ATP Automotive Z-189 Automatic Transmission Flex Plate ATP Z-189 Automatic Transmission Flex Plate - Factory Balanced Replacement Flywheel ATP Z-189 Flywheel Broken flex plates can not be repaired, they must be replaced.