Complete Manual Transmission Opel Astra J Sports Wagon (2011-) – A20DTH Diesel 2.0L This used complete manual transmission is designed for the Opel Astra J Sports Wagon (2011 onward) and is fully compatible with the A20DTH 2.0L (1956cc) diesel engine. Built for smooth performance, durability, and efficiency, this gearbox is an excellent replacement for a failing or worn-out transmission. This manual transmission is designed to ensure optimal shifting performance, maintaining the power and efficiency of the A20DTH engine. As a used spare part, it has been carefully tested and inspected to meet quality and reliability standards before resale.