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Old 01-03-2012, 01:32 PM   #384
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Member#: 72730
Join Date: Oct 2004
Chapter/Region: NESIC
Location: Wayland, MA
2001 Lexus ES300,
2005 Outback XT


Originally Posted by abacall View Post
Thanks RCE!! Any idea on control arms/bushings interchangeability for 08 WRX?
What are you looking to interchange? ;-)

08-10 WRX (and 08-11 Impreza) front LCA are the same as 05-09 Legacy arms. The front/rear bushings in them are common to all 08+ Impreza (including 08-10 STI) and the 07-09 Legacy SpecB (other Legacies use softer interchangeable bushings). LCA are interchangeable with the 05-09 Legacies, including the aluminum arms used on the 07-09 Legacy Spec B. STI has a wider aluminum LCA that is too wide for the 08-10 WRX. 11-12 WRX has a wider arm, interchangeable with the 08-12 STI, but made of steel not aluminum (I suspect this is the same as a 09-11 Forester LCA). 11-12 STI got a new "pillow ball" rear bushing in the LCA, the arm was revised for this, the new bushing is no longer interchangeable with other Impreza/Legacy arms. There are rubber "Group-N" bushings available for these LCAs if you know where to look. Lots of urethane and metal options available too, most branded as an "ALK"

My 09 WRX stock LCA next to the SpecB Al version:

Rear Arms: 08-12 Impreza are all the same rear arms including WRX and STI, arms bushings etc all the same on all models. There is a Subaru JDM arm kit for the Impreza, features pillow-ball bushings for the rear LCA and toe arm. There are a few Group-N bushing available as well as a bunch of urethane bushing options.
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