I should have listened to the guy that said don't waste yourtime on the cheap shaft, bite the bullet and pay the extra for a well balanced one. I tried two from Advance Auto at $300 each and the vibration was drastic. They kindly refunded my money. Bought one from Auto Zone at $479, still was made in China but it was well balanced. The dealer wanted $799 for a new one. Lesson learned, nice forum here!