Turn In Concepts Rear Diff Mount Bushings Race Subaru WRX / STI 2002-2007 | 1001-01-0021 vendor_WeatherTech Replacing the restrictive factory airbox

Replacing the restrictive factory airbox delivers a noticeable increase in induction sound

Spring Rate (F): 224lbs/in (4kgf/mm)

Plastic washers are included

Part #: 600SB075

Part #: PSR-216BFWGOTSM

Turn In Concepts Rear Diff Mount Bushings Race Subaru WRX / STI 2002-2007 | 1001-01-0021 vendor_WeatherTech Replacing the restrictive factory airboxPart #: TIC 1001 01 0021 Are you tired of the "diff dance of distraction and deflection" when you're getting on it in your Subaru? Are you interested in better throttle response, and a more connected feeling with the car? If so, then by all means, please continue reading. Made to fit the newer generation of Impreza chassis these mounts will also fit a number of other NEWER Subaru models. To check for fitment take a look at the pics and instructions.