MagnaFlow has a variety of 2004 Mazda 3 catalytic converters that meet California Grade, HM Grade or OEM Grade requirements. Each of these replacement catalytic converters is engineered to keep your car on the road and running like it should. Each converter features durable stainless-steel construction and utilizes either a direct-fit or universal design compatible with GS to i trim levels equipped with the 2.0L or 2.3L inline-four engine options. Select your ’04 Mazda 3’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 Mazda 3 replacement exhaust system? Shop all BRExhaust 2004 Mazda 3 Direct-Fit Replacement Exhaust Systems to find the best aftermarket kit to replace your 2004 Mazda 3 OEM exhaust.

MagnaFlow offers complete performance exhaust systems for your 2004 Mazda 3. Determine the power and sound you demand for your 2004 3 and shop all available exhaust systems online. Select your '04 Mazda 3 sub-model and engine details to buy the best exhaust system that fits your needs.