Perrin Black Air Oil Separator Subaru WRX 2008-2014 / STI 2008-2021 w/ TMIC | PSP-ENG-606BK Vehicle Model_Altima Using other up-pipes would only

Using other up-pipes would only compromise performance

You have to see this header in person to appreciate it

spring length is guaranteed not to sag more than 5mm

Feel - Smooth engagement

This combination provides superior strength

Perrin Black Air Oil Separator Subaru WRX 2008-2014 / STI 2008-2021 w/ TMIC | PSP-ENG-606BK Vehicle Model_Altima Using other up-pipes would onlyFitment Information: 2008 2014 Subaru WRX w Top Mount Intercooler 2008 2021 Subaru STI w Top Mount Intercooler Features: Reduces the chances of detonation Traps oil from the crankcase ventilation before it enters the intake system Increases intercooler efficiency by reducing the amount of oil deposited into your intercooler and intake system Reduces carbon buildup in the combustion chamber, intake valves, and intake tract Separates engine oil from