MagnaFlow has a variety of 2004 Honda Civic catalytic converters that meet California Grade, OEM Grade or HM Grade requirements. Make sure that your Civic’s check engine light stays off and keep it smog compliant with one of these high flow converters. Each converter features durable stainless-steel construction and utilizes either a direct-fit or universal design compatible with DX to SiR trim levels equipped with the 1.3L inline-four hybrid to 2.0L inline-four engine options. Select your ’04 Honda Civic’s specifications and state vehicle registration to ensure you buy the correct catalytic converter that fits your car’s needs and meets your state’s emissions compliance regulations.

Need a 2004 Honda Civic replacement exhaust system? Shop all BRExhaust 2004 Honda Civic Direct-Fit Replacement Exhaust Systems to find the best aftermarket kit to replace your 2004 Honda Civic OEM exhaust.

MagnaFlow offers complete performance exhaust systems for your 2004 Honda Civic. Determine the power and sound you demand for your 2004 Civic and shop all available exhaust systems online. Select your '04 Honda Civic sub-model and engine details to buy the best exhaust system that fits your needs.