Welcome to Proper Parts

We design, prototype, manufacture, and remanufacture high quality aftermarket auto parts for vintage Rolls-Royce, Bentley, Range Rover, and General Motors vehicles. We sell Power Seat & Mirror ECU Control Modules, Power Seat Transmissions, and many parts associated with these systems. With over 25 years of experience restoring Rolls-Royce and other classic cars, we have the troubleshooter's perspective and are always developing new parts. We aim to build "better than new."