HKS Super SQV blow off valve with distinctive rally car style 'chirp' when venting to atmosphere.
Classic 09/96-08/98 Original dump valve is located on right hand side of engine bay
Classic 09/99-07/00 Original dump valve is bolted to the intercooler
Version 3 only available while stocks last - if the Version 3 is unavailable you will be supplied with Version 4 (as shown).
N.B: Picture shows universal version - you will be supplied a tailored version for the Impreza.