![Perrin [02-07 WRX, 04-21 STI] Throttle Body Hose Black | PSP-ITR-301BK](http://smgspeed.com/cdn/shop/files/perrin-top-mount-intercooler-coupler-black-subaru-wrx-2002-2007-sti-2004-2019-psp-itr-301bk-intercooler-hose-kits-perrin-performance-papsp-itr-301bk.jpg?v=1763988333&width=800)
![Perrin [02-07 WRX, 04-21 STI] Throttle Body Hose Black | PSP-ITR-301BK](http://smgspeed.com/cdn/shop/files/perrin-top-mount-intercooler-coupler-black-subaru-wrx-2002-2007-sti-2004-2019-psp-itr-301bk-intercooler-hose-kits-perrin-performance-papsp-itr-301bk-2.jpg?v=1763988333&width=800)
Perrin [02-07 WRX, 04-21 STI] Throttle Body Hose Black | PSP-ITR-301BK
This is Perrin’s Throttle Body Hose made from 5-ply multi-layer silicone. The factory throttle body coupler will become weak after a certain mileage and age, and could potentially tear. The Perrin unit has been built to withstand extremely high pressures, and temperatures to give you long lasting performance. These are going to come ready to install with the coupler, and a pair of clamps.
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