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The Invidia high-flow catted downpipe is a direct-fit replacement for 2002–2007 Subaru Impreza WRX and STI models and includes an extra O2 bung for flexible sensor placement. Engineered as a high-flow catted downpipe, it integrates into the turbo exhaust path while retaining a catalytic element and offers the additional O2 bung to support aftermarket sensor or tuning setups that require a second oxygen sensor location.
Invidia 02-07 Subaru Impreza WRX/STI High Flow Catted Downpipe w/ Extra 02 Bung
