How much does the aluminum weigh on a transmission case?

The weight of aluminum in a transmission case can vary significantly depending on the size and design of the transmission. Generally, a typical aluminum transmission case can weigh anywhere from 20 to 50 pounds (9 to 23 kilograms). However, specific weights will depend on the manufacturer and the model of the transmission. For precise figures, it's best to consult the specifications provided by the transmission manufacturer.