Replace the worn and most likely failed original rubber transmission mount in your Viper. The heat, driveline weight and driveline movement of the Viper put a large amount of stress on the rubber transmission mount and they often tear in half. The unique internal design of the Polyurethane mount eliminates separation. The Viper's harsh conditions require the transmission mount to be replaced more often than in other vehicles. The Polyurethane transmission mount greatly reduces of engine and transmission movement in the chassis, which makes shifts more precise, stops the shifter from moving under load or on/off throttle, reduces wheel hop and overall makes the Viper more enjoyable to drive.