Perrin Front Mount Intercooler w/ Boost Tube Piping Kit 2002-2007 WRX / 2004-2007 STI

A key to making more power on any turbocharged engine is the addition of a high performance air-to-air intercooler. This part in the simplest of terms, cools the air going from the turbo into your engine, much the same as a radiator cools the water inside the engine, by transferring the excess heat way using multiple passages through a core. A PERRIN intercooler fits easily to the front of your Subaru to maximize cooling. The most important part of any intercooler system is the core. The core cools the charge air on the way to the engine. The factory Subaru tube and fin intercooler was designed to be easy to manufacture, but is not good for performance. Their testing has shown the optimum core design is the 3/8” bar and plate style that has a 3/8” charge air and ambient air path, instead of the common 1/4” size. The PERRIN bar and plate core design is much more durable than tube and fin with the ability to withstand rocks and other debris that may be flying around the road. The PERRIN intercooler core is 28” long x 9.25” tall x 3.5” deep with a volume of 906.5 cu-in. Giving the PERRIN intercooler the best overall design for cooling and pressure drop, and it fills the opening of the WRX/STI bumper perfectly! PERRIN boost tubes are CNC mandrel bent from aluminum tubing for better weight reduction. Every boost tube has an over sized beaded end to ensure the hose clamps and couplers stay connected and sealed! They choose to take the smoothest shortest path to get air to and from the intercooler. Tubes are available in a Black or Red wrinkle powder coat for a long lasting durable finish that looks good in any engine bay. Right off the turbo a smooth offset coupler carries the hot side air charge to a perfectly matched 2.25” boost tube. Perrin chose 2.25" tubing for a smoother, cleaner, obstruction free routing while still being large enough to flow more WHP than most turbos can put out. The air charge then is routed through the engine bay next to the battery, and down behind the radiator to the intercooler. The cold side boost tubes are mounted as high as possible in the engine compartment to clear all turbo and intake combinations as it travels to the throttle body through the engine bay. PERRIN Performance silicone couplers are standard with PERRIN intercooler kits. PERRIN couplers are fiberglass fortified with smooth inner walls for long lasting high strength and smooth air flow. Available in glossy black and red.