Part # BW 802281 The Bendix Typ-20 air brake chamber is a critical air brake component designed to convert the energy of air pressure into mechanical force to apply the brakes and stop the vehicle. This is made following a stringent manufacturing process to ensure each Bendix rotochamber provides maximum performance and guaranteed efficiency. *Please Inquire If You Have Any Questions On Any Product! 1 (800) 374-6488, Or Chat With Us!