Genuine Subaru air filter element.
Direct replacement for all Impreza Turbo models from 1992-2007 including the 2.5L STi.
Also fits most Forester 2.5L. Legacy 2.5L & Outback 3.0L Non-Turbo models.
If in doubt please check the size - the dimensions are 280 x 169mm.
Part Ref: 16546AA020