For sale: Double shaft for a Mazda CX9. Condition: Guaranteed, no shaking or any issues. I removed it from my car. It had an oil leak from the seal between the gearbox and the double shaft. I removed it, fixed the leak, and didn't reinstall it due to no need. They told me it saves fuel. For your information, it didn't make much difference in fuel saving. It was installed on a 2013 model and fits, God willing, from 2008 to 2016 models. Complete double shaft, double, and screws are included.