Wagner Tuning Catted DownpipeWagner Tuning catted down pipe for BMW N20 engine. Features: Replacement for OEM BMW Part# 18327645666 from year of construction 10 2012+ made out of high quality stainless steel 1. 4301 (SS304) 100% perfect fit, replace OEM less thermal load on the turbocharger more power by reducing back pressure significantly more torque 200cpi catalytic converter connection diameter 105mm *ECU will need to be coded to avoid engine management light errors. Vehicle
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