Perrin 02+ WRX / 04+ STi Equal Length Header 1.5 inch Primaries

The Perrin Performance Equal Length Subaru WRX and STi Header has quickly become one of the most popular Subaru aftermarket header choices due to proven power gains of up to 30 wheel horsepower and 30lbs of torque on a slightly modified STi! The Perrin Performance WRX & STi header is designed to make large power gains without sacrificing low-end power. Flanged for a stock uppipe, the Perrin header is compatible with stock-location uppipes, including those included with rotated-mount turbo kits, making the Perrin manifold an excellent choice for big-turbo Subaru. If you are looking for huge power gains, this is the header for you.

NOTE:

2002-2005 WRX - Yes, requires oil pan with header cutout and oil pickup tube
2002-2005 WRX Automatic Transmission - Yes, requires modifications to radiator and radiator line to the transmission
2006-2007 WRX - Yes, requires 2002-04 WRX oil cooler assembly and oil feed pipe
2004-2008 Forester XT - Yes, requires oil pan with header cutout, oil pickup tube, 2002-04 WRX oil cooler assembly, and 2002-04 WRX oil feed pipe
CSF Radiator with Built-in Oil Cooler - No
KILLERB Cast Oil Pan - No

Fitment Information:

2002-2014 Subaru WRX

2004-2021 Subaru STI

2005-2009 Subaru Legacy GT

2005-2009 Subaru Outback XT

This does NOT fit the FA20 Subaru WRX.