Breather hose located on driver (LEFT) side rear-most valve cover.
Part 1AB343 on the diagram (2004-2005 STI).
Part 99801 on the diagram (2004-2016 STI).
Available for all 2004+ Subaru WRX STI. (Choose from 2004-2005 STI or 2006-2016 STI.)
SKU#: 09851J, 09851K
Shipping Weight: 1.0 lb
Category: Engine Maintenance