Looking for in-stock aftermarket parts to modify or upgrade your 2003 Honda Civic with catalytic converter universal? At Tunersports.com we carry a huge selection of the top name brand performance catalytic converter universal parts and accessories for your Civic.
Whether you have a 2003 Honda Civic in EX to Si trim we have you covered. We have 7 catalytic converter universal available to mod your Civic. All parts have free shipping to the Continental US 48 States.
 IN STOCK 51354MagnaFlow specializes in superior catalytic converter and exhaust technology and has spent the past 30+ years earning its reputation as a global market leader. American engineered and manufactured, MagnaFlow Catalytic Converters combine efficient industrial design to produce a product that exceeds, ... MagnaFlow Conv Univ 2in Inlet/Outlet Center/Center Round 11in Body L x 5.125in W x 15in Overall L 1999-2005 Honda Civic EX 2001-2005 Honda Civic GX / HX $202.00 |
 IN STOCK 51355MagnaFlow specializes in superior catalytic converter and exhaust technology and has spent the past 30+ years earning its reputation as a global market leader. American engineered and manufactured, MagnaFlow Catalytic Converters combine efficient industrial design to produce a product that exceeds, ... MagnaFlow Conv Univ 2.25in Inlet/Outlet Center/Center Round 11in Body L x 5.125in W x 15in Overall L 2001-2005 Honda Civic EX / GX 2002-2005 Honda Civic Si $202.00 |
 IN STOCK 99354HMMagnaFlow specializes in superior catalytic converter and exhaust technology and has spent the past 30+ years earning its reputation as a global market leader. American engineered and manufactured, MagnaFlow Catalytic Converters combine efficient industrial design to produce a product that exceeds, ... MagnaFlow Conv Univ 2.00inch Honda 1999-2005 Honda Civic EX 2001-2005 Honda Civic GX / HX $188.00 |
 IN STOCK 99355HMMagnaFlow specializes in superior catalytic converter and exhaust technology and has spent the past 30+ years earning its reputation as a global market leader. American engineered and manufactured, MagnaFlow Catalytic Converters combine efficient industrial design to produce a product that exceeds, ... MagnaFlow Conv Univ 2.25inch Honda 1999-2005 Honda Civic EX 2001-2005 Honda Civic GX 2002-2005 Honda Civic Si $188.00 |
 IN STOCK 99356HMMagnaFlow specializes in superior catalytic converter and exhaust technology and has spent the past 30+ years earning its reputation as a global market leader. American engineered and manufactured, MagnaFlow Catalytic Converters combine efficient industrial design to produce a product that exceeds, ... MagnaFlow Conv Univ 2.5inch Honda 2002-2011 Honda Civic Si $188.00 |