Perrin Black Air Oil Separator WRX/STI w/ TMIC 2002-2007 | PSP-ENG-605BK High-Performance Shocks Damping Levels 40-Level Height Adjustment

Damping Levels 40-Level Height Adjustment Yes Spring Rate(Front) 10 kg/mm (560 lbs/inch) Spring Rate(Rear) 8 kg/mm (448 lbs/inch) Spring Length(Front) 180 mm Spring Length(Rear) 150 mm Front Top Mount Yes

Tip ID: 75mm x2

Hose clamps

We recommend using a 12" slim fan on half-size radiators (EG CIVICS USE 10-INCH FAN) and (2) 10" fans on the full-size radiators

Perrin Black Air Oil Separator WRX/STI w/ TMIC 2002-2007 | PSP-ENG-605BK High-Performance Shocks Damping Levels 40-Level Height AdjustmentThe AOS increases intercooler efficiency by reducing the amount of oil deposited into your intercooler and intake system! As blow by oil builds up inside your intercooler, the less efficient it becomes due to less heat being transferred away from your engine. This leads to power loss and detonation, which can be damaging to your engine. Reduce carbon build up in the combustion chamber, intake valves, and in your intake tract. Crank case blow by is