Cobra Sport Audi A3 Cat Back Exhaust 2.0 TFSi FWD 3" Resonated Stainless AU112. PART NUMBER – AU112. MODEL – A3 (8P) 2.0 TFSI 2WD (5 Door). This Audi A3 TFSI performance exhaust is made in 3"/76.2mm pipework and fits from the catalytic converter section backwards (Cat-back) these exhausts replace the centre and rear sections.
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