Audi S4 Exhaust & Emissions

At JC Whitney, we offer the best selection of Audi S4 Exhaust & Emissions parts and accessories. We offer an industry leading 30-day Guarantee so that you can shop with confidence! Narrow your selection below by providing the year of your vehicle for a custom list of Audi S4 Exhaust & Emissions products.
Select Vehicle
Sort by:
Show
20 out of 235 products in Exhaust & Emissions
  • NTK FACTORY FIT OXYGEN SENSOR

    Fits Audi S4

    NTK Factory Fit - Oxygen Sensor. NTK Oxygen Sensors are an exact replacement for your defective, worn out, or clogged oxygen sensor. Replaces... more

    Priced from:

    $118.35
  • BORLA - PERFORMANCE EXHAUST SYSTEMS

    Fits Audi S4

    Borla offers hundreds of direct fit, bolt-on applications for a wide range of popular cars, trucks, SUVs and even exotics, all designed... more

    Priced from:

    $815.99
  • ANSA OE REPLACEMENT MUFFLERS

    Fits Audi S4

    Does your exhaust seem louder these days? It could mean that your muffler’s guts have corroded internally and it is time to replace... more

    Priced from:

    $309.70