Chrysler Small Block Damper Plate 3745466 Mates Chrysler LM318, M340 and M360 marine engines to Velvet Drive 71C and 72C model transmissions. Flywheel mounted transmission damper plate approximately 12.32 inch outside diameter 6 dampening springs with 26 spline drive hub Also referred to as a flywheel flex plate or transmission drive plate Application is small block Chrysler engines Replaces AS8-K2C