Audi S4 Exhaust Parts

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    • (46 reviews)
      # sp18723
      Replacement Exhaust Kit by Walker®. If you are looking for the ultimate in quality and value, then this superior replacement exhaust kit by Walker is what you need. All its components are designed with precision craftsmanship in...
      Mufflers and Resonators Designed for OE equivalent sound and precision fitOE-style louvered tube technology for a premium, factory-like sound
      $6.58 - $877.94
    • (14 reviews)
      # sp13664
      Direct Fit Catalytic Converter by Davico®. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. Once your stock cat fails to perform its job, replacement is the...
      Helps your vehicle emit harmless gasesDirect OEM replacement
      $30.04 - $1,263.55
    • (14 reviews)
      # sp20762
      Replacement Exhaust Kit by AP Exhaust®. Get confidence with this high-standard OE quality purchase which is perfect for those who want to perform a long-lasting exhaust system repair. Made from top-notch materials, this dependable...
      Superior replacement for your worn out exhaust partHelps put your vehicle back to its tip-top shape
      $22.12 - $1,564.51
    • (14 reviews)
      # sp113330
      Exhaust Kit by Ansa®. If you're in need of a durable and efficient replacement exhaust part, rely on this OE-quality product from Ansa that provides both perfect fit and superior functionality for years to come. It is manufactured from...
      Completely compatible with your OE-unitDesign to ensure a perfect fit
      $18.73 - $410.39
    • (0 reviews)
      # sp4295
      Universal Fit Catalytic Converter by Eastern®. Whether your catalytic converter is damaged by road debris or failed due to an engine problem, you definitely need a new one, and this product is the way to go. Made of stainless steel, the...
      Converts harmful engine emissions to less dangerous gases and water vaporAdvanced design for maximum engine output
      $34.10 - $250.50
    • (6 reviews)
      # sp20739
      Replacement Exhaust Kit by Bosal®. Get confidence with this high-standard OE quality purchase which is perfect for those who want to perform a long-lasting exhaust system repair. Made from top-notch materials, this dependable exhaust...
      Superior replacement for your worn out exhaust partHelps put your vehicle back to its tip-top shape
      $30.65 - $731.52
    • (5 reviews)
      # sp92788
      Direct Fit Catalytic Converter by DEC®. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic converters are made from a heavy duty stainless steel outer shell which...
      Direct fitMade from a heavy duty stainless steel outer shell
      $141.23 - $851.76
    • (9 reviews)
      # sp18944
      Direct Fit Catalytic Converter by PaceSetter®. CARB Compliant: No. Converter Configuration: Direct Fit. Catalytic Converter Format: Main Catalytic Converter. Stainless Steel. Custom Engineered to deliver maximum performance and...
      Direct-Fit Catalytic Converters are a direct replacement for original equipmentManufactured using mandrel-bent 16-gauge and stainless steel tubing
      $60.25 - $671.66
    • (1 review)
      # sp10059
      Ultra™ Universal Fit Catalytic Converter by Walker®. Walker offers complete coverage: direct-fit mufflers, converters, pipes, resonators and accessories. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust...
      EPA & CARB Emissions Products Available for Most Vehicles5 Year / 50,000 Miles Warranty on Structural Components
      $55.65 - $127.32
    • (6 reviews)
      # sp4304
      Universal Fit Catalytic Converter by Walker®. Walker offers complete coverage: direct-fit mufflers, converters, pipes, resonators and accessories. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust Walker, an...
      EPA & CARB Emissions Products Available for Most VehiclesEmission, Structural Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)
      $60.37 - $285.29
    • (2 reviews)
      # sp128208
      ECO III Direct Fit Converter and Pipe Assembly by Eastern®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle, this catalytic converter is a great...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $118.85 - $643.42
    • (1 review)
      # sp94077
      Catalytic Converter by AP Exhaust®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality...
      Provides professional installer with immediate installation optionsSpecifically engineered for OBDII equipped vehicles
      $41.70 - $297.90
    • (9 reviews)
      # sp128237
      Catalytic Converter and Pipe Assembly by AP Exhaust®. The growing concern for the environment means there is a growing need for quality emission control products. AP catalysts and catalytic convert systems can be found in a vast array...
      5-year/50,000-mile warranty on converter body25,000-mile warranty on emissions
      $83.50 - $1,108.69
    • (0 reviews)
      # sp157608
      Universal Fit Catalytic Converter by Bosal®. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to vehicle manufacturers and use advanced manufacturing techniques to...
      Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases
      $50.68 - $121.99
    • (0 reviews)
      # sp159995
      Universal Fit Catalytic Converter (P) by Bosal®. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to vehicle manufacturers and use advanced manufacturing techniques...
      Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases
      $50.68 - $206.44
    • (8 reviews)
      # sp128140
      Catalytic Converter and Pipe Assembly by DEC®. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic converters are made from a heavy duty stainless steel outer...
      Direct fitMade from a heavy duty stainless steel outer shell
      $85.90 - $1,322.76
    • (4 reviews)
      # sp128241
      Catalytic Converter and Pipe Assembly by Davico®. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. Once your stock cat fails to perform its job, replacement is...
      Helps your vehicle emit harmless gasesDirect OEM replacement
      $45.22 - $1,338.71
    • (0 reviews)
      # sp132566
      Universal Fit Catalytic Converter by Davico®. This Universal fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. Once your stock cat fails to perform its job, replacement is...
      Helps your vehicle emit harmless gasesDirect OEM replacement
      $155.46 - $290.33
    • (26 reviews)
      # sp13107
      Muffler Assembly by Ansa®. This premium part is essential for completing a professional exhaust installation. The key a well-functioning vehicle is about purchasing only premium quality parts and hardware. ANSA makes its products with...
      Engineered to provide excellent exhaust system managementBuilt to the strict quality standards
      $32.16 - $410.39
    • (0 reviews)
      # sp32963
      Exhaust Seal Ring by HJS®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an...
      High quality at an affordable priceExpertly made from premium materials
      $3.17 - $19.97
    • (2 reviews)
      # sp27211
      Professional™ Oxygen Sensor by ACDelco®. If your O2 Sensor is not functioning properly, you are robbing yourself of performance and costing yourself money at the gas pump. Let ACDelco’s Professional Oxygen Sensors help. You can find...
      ACDelco Professional Oxygen Sensors earn the name ACDelco by being put through a variety of tests, often under extreme and unusual conditionsCustomers can receive better gas mileage with a properly working oxygen sensor
      $17.14 - $226.04
    • (0 reviews)
      # sp26976
      Oxygen Sensor by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose Walker accessories, you get...
      Makes installation quick and easyOptimal OE-style fit and quality
      $26.15 - $298.01
    • (0 reviews)
      # sp5756
      Oxygen Sensor by Delphi®. As one of the leading suppliers of oxygen sensor technology since 1978, Delphi planar technology is the result of their OE and aftermarket engineers partnering together to develop the most innovative oxygen...
      OE connectors and wire lengths within 3" of OE specificationsResists high temperatures, vibration damage and wire corrosion to protect signal accuracy, and long life
      $13.00 - $214.04
    • (0 reviews)
      # sp119178
      Universal Oxygen Sensor by Bosch®. Properly functioning oxygen sensors are important when it comes to your vehicle's fuel efficiency and reducing harmful exhaust emissions. That's why checking for, and possibly replacing, a worn-out...
      Patented SmartLink™ connector systemNo special tools required for installation
      $14.53 - $72.47
    • (3 reviews)
      # sp92988
      Wideband Oxygen Sensor by Bosch®. Invented for life, Bosch car parts are a rare combination of high quality, dependable service, and a reasonable price. This sensor utilizes a sophisticated sensing element enabling it to produce a...
      Detects the exact amount of unburned fuel in the exhaust streamOE connectors and OE-style harness for continuous wire from connector to sensor
      $32.44 - $261.60
    • (4 reviews)
      # sp94914
      Air Fuel Ratio Sensor by Denso®. Make sure your engine runs efficiently and produces fewer emissions by replacing your malfunctioning fuel-ratio sensors with these top-notch products designed by Denso. Engineered with the use of the...
      Designed to help reduce fuel consumption and harmful emissionsMade with the use of state-of-the-art sensor technologies
      $36.96 - $378.14
    • (18 reviews)
      # sp99082
      OE Connector Oxygen Sensor by Denso®. Denso's light duty oxygen sensor started to appear on vehicles with the development of fuel injection systems. The basic job of the sensor is to monitor the air fuel mixture under idle, moderate...
      Designed to help reduce fuel consumption and harmful emissionsMade with the use of state-of-the-art sensor technologies
      $10.90 - $369.86
    • (0 reviews)
      # sp118924
      Universal Fit Oxygen Sensor by Denso®. Make sure your engine runs efficiently and produces fewer emissions by replacing your malfunctioning fuel-ratio sensors with these top-notch products designed by Denso. Engineered with the use of...
      Designed to help reduce fuel consumption and harmful emissionsMade with the use of state-of-the-art sensor technologies
      $11.39 - $67.14
    • (0 reviews)
      # sp121602
      Air-Fuel Ratio Sensor by NTK®. Air/Fuel Ratio Sensors Utilize a Sophisticated Sensing Element that Enables Them to Produce a Precise Output in Proportion to the Air/Fuel Ratio. AFR Sensors Provide the ECU with an Exact AFR Response,...
      Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement
      $37.92 - $375.06
    • (13 reviews)
      # sp5156
      Oxygen Sensor by NTK®. This product is designed to improve engine efficiency and fuel mileage, while reducing emissions and extending catalyst life. The oxygen sensor is made of premium quality material and extensively tested during...
      Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement
      $11.91 - $176.84




    The Audi S4 provides its owners with luxury and performance that live together in one package. This vehicle is all about excellent fuel economy, attractive interior, and sharp handling. You can enjoy all of these advantages as long as your S4 is in its pristine condition. It is a well-known fact that if you want to keep your four-wheel friend operating profitably, you have to care about every single mechanism of this brawny automobile. The exhaust system is no exception.

    There are several problems you can meet in case of a faulty exhaust system. If you notice the black smoke coming from your Audi muffler, it indicates a problem with fuel distribution. Besides, it may sign that this part should be replaced to return smooth and silent driving. The next thing you can experience is a noise like a box of rocks being shaken while you are at the wheel. It may be a symptom of a languished catalytic converter. There are much more signals your S4 can give. All you need to do is to listen to your loyal friend and replace all of its worn out and damaged parts in time.

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    Audi S4 Exhaust Parts Reviews

    Average rating:    4 - 3 reviews
    4.5 of 5
    Kooks
    Product very good. Love it.
    Posted by Jojie (Mississauga, ON) / August 8, 20182010 Toyota Corolla
    Was this review helpful for you? Yes
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