Hixtrix originally posted this under Formal Complaint with Mazda:
I posted and told everyone to call the 800 # and complain about the sway bar clunk. The idea was to make sure that Mazda was aware of the problem. Since then, Mazda has released a new part # for the bushings on the sway bar underbody links (right where it is attached to the frame in the center of the sway bar). I had mine replaced w/ the new bushings yesterday, and all of the clunking is gone.
The old Mazda # is: BN7H-28-156B
The new one is: BN7H-28-156C