As [mention]wpoll [/mention] said, four of the bolts hold the anti sway bar and wow what a racket if you drive with them loose! (I had to go get a part and shop is a mile away, had the six bolts finger tight).

The bolts are torque to yield when properly installed. You can actually TTY them about 2-3x past the factory install but that one is clearly overcooked.

I swapped mine all out for 12.9 bolts so I could reuse them and used nordlock washers to keep them tight.

12.9 overlocked about 10% gets your as much compression as 10.9 TTY and you can do it ∞ times.

Nothing special about those bolts other than captive washers and the nuts are crushed to make them stay tight. You can get 10.9 bolts and nuts you can even “ovalize” the nuts just like the factory if your want to properly install them TYY and have the nuts stay on.

I put mine on bolt on top made it much easier to service the next time.


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2011 E70 • N55 (me)
2012 E70 • N63 (wife)