2005 Audi A4 Performance Exhaust Systems

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    • MagnaFlow® Touring Series Cat-Back Exhaust System
      (0 reviews)
      # 20206786
      Audi A4 2005, Touring Series Stainless Steel Cat-Back Exhaust System by MagnaFlow®. Muffler Sound: MODERATE. Exit Location: Dual Split Rear Exit. Exit Quantity: Dual. Finish: Stainless. Exhaust Inlet Connection Type: Clamp On....
      Moderate SoundDelivers More Horsepower
      $1,095.32 - $1,132.00
    • Borla® S-Type™ Stainless Steel Dual Cat-Back Exhaust System
      (0 reviews)
      # 86041300
      Audi A4 Quattro Base / Avant 1.8L / 2.0L 2005, S-Type™ Stainless Steel Dual Cat-Back Exhaust System by Borla®. Muffler Sound: AGGRESSIVE. Muffler Series: S-Type™. System Type: Cat-Back. Exit Location: Split Rear Exit. Main...
      Aggressive Plus SoundIncreased exhaust flow for better performance
      $899.99
    • AWE Tuning® 304 SS Cat-Back Downpipes Exhaust System Kit
      (0 reviews)
      # 97424156
      Audi A4 Quattro 1.8L Standard (Manual) Transmission 2005, 304 SS Cat-Back Downpipes Exhaust System Kit by AWE Tuning®. Main Piping Diameter: 2.5". AWE Tuning knew the tone and volume had to be spot on. It needed to deliver an...
      Increased pipe diameter to 2.5" to better let the engine exhaleStrategic elimination of mufflers to release tone when uncorked
      $1,145.40 - $1,191.40
    • AWE Tuning® 304 SS Cat-Back Exhaust System
      (0 reviews)
      # 93009563
      Audi A4 Quattro Sedan 2.0L Standard (Manual) Transmission 2005, 304 SS Cat-Back Exhaust System by AWE Tuning®. Main Piping Diameter: 2.5". AWE Tuning Performance Exhaust project can be touted as one of the most comprehensive and...
      Crafted from 304 Stainless SteelEstimated max power gains of 8HP and 8TQ at the crank
      $1,145.40 - $1,237.40
    • AWE Tuning® Touring Edition 304 SS Exhaust System
      (0 reviews)
      # 93467212
      Audi A4 Quattro 3.0L Standard (Manual) Transmission 2005, Touring Edition 304 SS Exhaust System by AWE Tuning®. A grin-worthy soundtrack coupled with signature AWE Tuning performance and quality honed over decades of supercar...
      Max gains of 10 Hp and 19 ft-lbs of torque to the crankSophisticated Touring Edition
      $1,237.40 - $1,283.40
    • AWE Tuning® Track Edition 304 SS Exhaust System
      (0 reviews)
      # 93467215
      Audi A4 Quattro 3.0L Standard (Manual) Transmission 2005, Track Edition 304 SS Exhaust System by AWE Tuning®. Main Piping Diameter: 2.5". Sophisticated sound and impressive performance. Featuring a straight-through design, the...
      Max gains of 7 Hp and 7 Ft/lbs of torque to the crankEngineered, designed, and manufactured in-house at AWE Tuning
      $1,053.40 - $1,099.40
    • MagnaFlow® Direct Fit California OBDII Catalytic Converter
      (0 reviews)
      # 22197185
      Audi A4 / A4 Quattro 1.8L with LEV1 ULEV Specification 2005, Direct Fit California OBDII Catalytic Converter by MagnaFlow®. Catalytic Series: OBDII. Catalytic Converter Substrate Material: Ceramic. Converter Body Material:...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $623.87
    • MagnaFlow® Direct Fit Federal OEM Grade Catalytic Converter
      (0 reviews)
      # 61586923
      Audi A4 2005, Direct Fit Federal OEM Grade Catalytic Converter by MagnaFlow®. Catalytic Series: OEM Grade. Catalytic Converter Substrate Material: Ceramic. Converter Body Material: Stainless Steel. CARB Compliant: No. Converter...
      Reduces harmful emissionsIncreases exhaust flow compared to original factory converter
      $451.26 - $618.71
    • MagnaFlow® Direct Fit Federal Standard Catalytic Converter
      (1 reviews)
      # 61586922
      Audi A4 2005, Direct Fit Federal Standard Catalytic Converter by MagnaFlow®. Catalytic Series: Standard. Catalytic Converter Substrate Material: Ceramic. Converter Body Material: Stainless Steel. CARB Compliant: No. Converter...
      Converter body manufactured from heavy-duty stainless steelIncreases exhaust flow compared to original factory converter
      $343.10 - $564.68
    • Vibrant Performance® Exhaust Manifold Flange
      (0 reviews)
      # 78903443
      Audi A4 / A4 Quattro 1.8L 2005, Exhaust Manifold Flange by Vibrant Performance®.
      Made of High Quality MaterialsAvailable in different sizes
      $52.76 - $83.95
    • Genuine® Exhaust Manifold
      (0 reviews)
      # 8819979
      Audi A4 / A4 Quattro 1.8L 2005, Exhaust Manifold by Genuine®. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and legal reasons, but before you...
      $495.58
    • Walker® CalCat™ Round Direct Fit Catalytic Converter
      (0 reviews)
      # 88065153
      Audi A4 1.8L 2005, CalCat™ Stainless Steel Direct Fit Catalytic Converter by Walker®. Includes: Converter Assembly. Catalytic Series: CalCat™. Catalytic Converter Substrate Material: Ceramic. CARB Compliant: CARB Compliant....
      Designed to meet your vehicle’s specific emissions requirementsDirect fit replacement
      $348.38
    • Walker® Ultra™ Round Direct Fit Catalytic Converter
      (0 reviews)
      # 104613094
      Audi A4 2.0L 2005, Ultra™ Stainless Steel Direct Fit Catalytic Converter by Walker®. Catalytic Series: Ultra™. Catalytic Converter Substrate Material: Ceramic. CARB Compliant: EPA Compliant. Converter Configuration: Direct-Fit....
      EPA & CARB Emissions Products Available for Most Vehicles5 Year / 50,000 Miles Warranty on Structural Components
      $303.86
    • Walker® Ultra™ Round Direct Fit Catalytic Converter
      (0 reviews)
      # 88067492
      Audi A4 1.8L 2005, Ultra™ Stainless Steel Direct Fit Catalytic Converter by Walker®. Catalytic Series: Ultra™. Catalytic Converter Substrate Material: Ceramic. CARB Compliant: EPA Compliant. Converter Configuration: Direct-Fit....
      Designed to meet your vehicle’s specific emissions requirementsDirect fit replacement
      $250.24
    • Walker® Ultra™ Round Universal Fit Catalytic Converter
      (0 reviews)
      # 88065154
      Audi A4 Base / Avant / Cabriolet 1.8L 2005, Ultra™ Stainless Steel Universal Fit Catalytic Converter by Walker®. Catalytic Series: Ultra™. Catalytic Converter Substrate Material: Ceramic. CARB Compliant: EPA Compliant....
      Emission Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)Structural Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)
      $103.58
    • Walker® Universal Fit Catalytic Converter
      (0 reviews)
      # 87065154
      Audi A4 3.0L 2005, Universal Fit Catalytic Converter by Walker®. CARB Compliant: CARB Compliant. Converter Configuration: Universal Fit. Catalytic Converter Oxygen Sensor Location: without O2 Sensor Port. Catalytic Converter...
      EPA & CARB Emissions Products Available for Most Vehicles5 Year / 50,000 Miles Warranty on Structural Components
      $165.07
    • Bosal® Direct Fit Premium Load Catalytic Converter
      (0 reviews)
      # 95030045
      Audi A4 1.8L 2005, Direct Fit Premium Load Catalytic Converter by Bosal®. Converter Configuration: Direct Fit. Catalytic Series: Premium Load. CARB Compliant: No. If you’re in need of a replacement catalytic converter, you...
      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
      $99.53 - $209.05
    • Bosal® Direct Fit Standard Load Catalytic Converter
      (0 reviews)
      # 88879843
      Audi A4 1.8L 2005, Direct Fit Standard Load Catalytic Converter by Bosal®. Converter Configuration: Direct Fit. Catalytic Series: Standard Load. CARB Compliant: No. If you’re in need of a replacement catalytic converter, you...
      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
      $86.85 - $192.49
    • Eastern® ECO II Direct Fit Catalytic Converter
      (0 reviews)
      # 111789223
      Audi A4 2005, Catalytic Converter by Eastern®. Catalytic Series: ECO II. Converter Configuration: Direct Fit. Catalytic Converter Format: Main Catalytic Converter. Catalytic Converter Oxygen Sensor Location: Rear. CARB Compliant:...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $224.75 - $309.01
    • Eastern® ECO III Direct Fit Catalytic Converter
      (0 reviews)
      # 17576267
      Audi A4 / A4 Quattro 1.8L 2005, Catalytic Converter by Eastern®. Catalytic Series: ECO III. Converter Configuration: Direct Fit. Catalytic Converter Format: Main Catalytic Converter. Catalytic Converter Oxygen Sensor Location:...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $240.80
    • Eastern® ECO II Universal Fit Round Catalytic Converter
      (0 reviews)
      # 100278984
      Audi A4 Quattro 3.0L Standard (Manual) Transmission 2005, Catalytic Converter by Eastern®. Catalytic Series: ECO II. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Inlet Diameter: 2"....
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $65.28
    • DEC® Direct Fit Catalytic Converter
      (0 reviews)
      # 86067210
      Audi A4 2005, 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...
      Direct fitMade from a heavy duty stainless steel outer shell
      $264.60 - $331.80
    • Walker® Quiet-Flow™ Stainless Steel Aluminized Muffler Assembly
      (0 reviews)
      # 18159263
      Audi A4 2005, Quiet-Flow™ Stainless Steel Aluminized Muffler Assembly by Walker®. Muffler Series: Quiet-Flow™. Muffler Body Material: Stainless Steel. Muffler Body Finish: Aluminized. Muffler Type: Combination. Mufflers...
      $129.65 - $210.03
    • Walker® Resonator Assembly
      (0 reviews)
      # 70809434
      Audi A4 2005, Aluminized Resonator Assembly by Walker®. Muffler Body Height: 3.5". Muffler Body Finish: Aluminized. Connection Type: Pipe. If you want exhaust piping that delivers precise OE-style fit, appearance, and reliability,...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $146.05 - $191.98
    • Walker® Stainless Steel Aluminized Irregular Muffler
      (0 reviews)
      # 70809429
      Audi A4 2005, Stainless Steel Aluminized Irregular Muffler by Walker®. Muffler Body Width: 11.63". Muffler Body Material: Stainless Steel. Muffler Body Finish: Aluminized. Muffler Body Shape: Irregular. Muffler Type: Combination....
      $214.50 - $235.85
    • Bosal® Center Resonator Assembly
      (0 reviews)
      # 20555008
      Audi A4 2005, Center Resonator Assembly by Bosal®. Location: Center. This muffler is constructed by one of the leading OE suppliers to provide OE-style performance and maintain a factory-like sound. The direct-fit configuration...
      Designed to deliver ultimate performance and a quality OE-style soundAluminized steel construction for maximum durability
      $135.44 - $146.77
    • Bosal® Muffler
      (0 reviews)
      # 36735185
      Audi A4 2005, Muffler by Bosal®. This muffler is constructed by one of the leading OE suppliers to provide OE-style performance and maintain a factory-like sound. The direct-fit configuration allows for easy, bolt-on installation...
      Designed to deliver ultimate performance and a quality OE-style soundAluminized steel construction for maximum durability
      $114.69 - $152.61
    • Ansa® Muffler
      (0 reviews)
      # 80696198
      Audi A4 2005, Muffler 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...
      Engineered to provide excellent exhaust system managementBuilt to the strict quality standards
      $136.69 - $295.82
    • Bosal® Exhaust Pipe
      (0 reviews)
      # 20555011
      Audi A4 2005, Exhaust Pipe by Bosal®. This pipe is engineered to meet OE specs to ensure precise, factory-like fit, performance, and reliability. This part features a direct fit design allowing for ease of installation....
      Stainless or aluminized steel construction for durabilityPrecision-manufactured for easy fitment
      $62.69 - $106.84
    • Ansa® Front Exhaust Pipe
      (0 reviews)
      # 80696191
      Audi A4 2005, Front Exhaust Pipe 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...
      Engineered to provide excellent exhaust system managementBuilt to the strict quality standards
      $79.95 - $176.82
    • Walker® Band Clamp
      (0 reviews)
      # 70809422
      Audi A4 2005, Stainless Steel Band Clamp by Walker®. Material: Stainless Steel. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete...
      Makes installation quick and easyOptimal OE-style fit and quality
      $17.69 - $24.64
    • Walker® Heavy Duty U-Bolt Clamp
      (1 reviews)
      # 18129520
      Audi A4 2.0L 2005, Heavy Duty Stainless Steel U-Bolt Clamp by Walker®. Material: Stainless Steel. Diameter: 2". Inlet / Outlet Quantity: 1 Inlet / 1 Outlet. With their extensive selection of accessories and hardware for the exhaust...
      Makes installation quick and easyOptimal OE-style fit and quality
      $2.09
    • Walker® Insulator
      (0 reviews)
      # 104613103
      Audi A4 2005, Rubber Insulator by Walker®. Includes: Insulator. Material: Rubber. Overall Length: 3.125". Inlet / Outlet Quantity: 1 Inlet / 1 Outlet. With their extensive selection of accessories and hardware for the exhaust...
      Makes installation quick and easyOptimal OE-style fit and quality
      $6.86
    • Bosal® Exhaust Clamp
      (0 reviews)
      # 89024891
      Audi A4 Quattro 2005, Exhaust Clamp by Bosal®. Location: Central to Rear Silencer. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick and easy....
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $2.03
    • Bosal® Exhaust Pipe Connector
      (0 reviews)
      # 95030050
      Audi A4 2005, Exhaust Pipe Connector by Bosal®. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick and easy. Choose Bosal, and you'll get...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $14.20 - $21.24
    • Eberspaecher® Exhaust Clamp
      (0 reviews)
      # 7796986
      Audi A4 3.0 2005, Exhaust Clamp by Eberspaecher®. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and legal reasons, but before you waste your...
      $22.18
    • Vaico® Rear Driver Side Exhaust System Hanger
      (0 reviews)
      # 8044831
      Audi A4 2005, Rear Driver Side Exhaust System Hanger by Vaico®. With Bracket. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and legal...
      $19.24
    • Fel-Pro® Exhaust Manifold Gasket Set
      (0 reviews)
      # 40584430
      Audi A4 / A4 Quattro 2005, Exhaust Manifold Gasket Set by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources,...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $7.27 - $9.89
    • Beck Arnley® Exhaust Manifold Gasket Set
      (0 reviews)
      # 35821468
      Audi A4 / A4 Quattro 2005, Exhaust Manifold Gasket Set by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to...
      OE quality products from top original equipmentTop quality materials
      $10.42 - $11.27
    • Victor Reinz® Exhaust Manifold Gasket
      (0 reviews)
      # 24055124
      Audi A4 2005, Exhaust Manifold Gasket by Victor Reinz®, Use 1 per Car. OEM Standard. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto parts chain store. But before you...
      $7.82 - $15.66
    • Walker® 3 Bolt Exhaust Gasket
      (0 reviews)
      # 35446466
      Audi A4 2005, Fiber Material and Metal Laminate 3 Bolt Exhaust Gasket by Walker®. Material: Fiber Material and Metal Laminate. Inlet / Outlet Quantity: 1 Inlet / 1 Outlet. Thickness: 0.058". Bolt Hole Diameter: 0.34". Bolt Hole...
      $6.62
    • Bosal® Exhaust Flange Gasket
      (0 reviews)
      # 20555016
      Audi A4 2005, Exhaust Flange Gasket by Bosal®. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick and easy. Choose Bosal, and you'll get...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $4.72
    • Fel-Pro® Exhaust Pipe Flange Gasket
      (0 reviews)
      # 40584431
      Audi A4 / A4 Quattro 2005, Exhaust Pipe Flange Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources,...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $7.40 - $16.30
    • AJUSA® Exhaust Manifold Gasket
      (0 reviews)
      # 97665101
      Audi A4 2005, Exhaust Manifold Gasket by AJUSA®. Gasket Material:Multi-layer Steel. These gaskets seal components in the intake and exhaust systems of the vehicle such as the intake manifold, intake plenum, and exhaust manifold to...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $7.70 - $8.62
    • AJUSA® Exhaust Manifold Gasket Set
      (0 reviews)
      # 97665107
      Audi A4 / A4 Quattro 2005, Exhaust Manifold Gasket Set by AJUSA®. Gasket Material:Multi-layer Steel. These gaskets seal components in the intake and exhaust systems of the vehicle such as the intake manifold, intake plenum, and...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $5.64 - $7.10
    • Victor Reinz® Exhaust Pipe Flange Gasket
      (0 reviews)
      # 24042314
      Audi A4 / A4 Quattro 3.0L 2005, Exhaust Pipe Flange Gasket by Victor Reinz®, Use 2 per Car. Exhaust Pipe to Manifold. OEM Standard. Material: Multi-Layered Steel. When you’re low on oil, coolant or some other fluid, you may be...
      $9.54
    • Ansa® Exhaust Gasket
      (0 reviews)
      # 80696187
      Audi A4 2005, Exhaust Gasket 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...
      Engineered to provide excellent exhaust system managementBuilt to the strict quality standards
      $4.36 - $28.14
    • Elring® Exhaust Gasket
      (0 reviews)
      # 7660616
      Audi A4 / A4 Quattro 3.0L 2005, Exhaust Gasket by Elring®. Exhaust Manifold to Catalytic Converter. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for...
      $12.28
    • Elring® Exhaust Manifold Gasket
      (0 reviews)
      # 7660758
      Audi A4 / A4 Quattro 2.0L 2005, Exhaust Manifold Gasket by Elring®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair,...
      $6.82
    • Febi® Exhaust Nut
      (0 reviews)
      # 52891278
      Audi A4 2005, Exhaust Nut by Febi®. Note: Shouldered (8x12mm) Self Locking. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and legal reasons,...
      $0.97
    • Walker® Replacement Exhaust Kit
      (0 reviews)
      # 115257795
      Audi A4 2005, Replacement Exhaust Kit 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...
      $95.21 - $303.86
    • AJUSA® Catalytic Converter Gasket
      (0 reviews)
      # 97661332
      Audi A4 / A4 Quattro 1.8L / 2.0L 2005, Catalytic Converter Gasket by AJUSA®. Gasket Material:Composite. Position:Outlet. If you need durable gaskets to prevent leaks on your vehicle, Ajusa is the way to go. Engineered using the...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $2.10
    • Patriot Exhaust® Steel Chrome Shielded Side Exhaust System
      (0 reviews)
      # 91560836
      Universal Steel Chrome Shielded Side Exhaust System by Patriot Exhaust®. Inlet Diameter: 2". Outlet Diameter: 3". Sold as a pair. Give your vehicle that custom look with our classic shielded side exhaust system. Large inlet and...
      Give your vehicle that custom look with our classic shielded side exhaust system with a show quality chrome finishLarge inlet and outlet pipes with low back pressure six-sided louvered core mufflers
      $254.65 - $296.58
    • Patriot Exhaust® 3.5" Chrome Lake Pipes (H1165)
      (0 reviews)
      # mpn358949929
      Universal 3 1/2" Chrome Lake Pipes by Patriot Exhaust®, Sold as a Pair. Includes Muffler, Brackets. Side Pipe made from Steel. Chrome Lake Pipes 63". Show quality chrome Lake Pipe 4 kits connect to headers or stock exhaust system...
      The look of an expensive tuned header side pipe at a fraction of the costSide pipes come with built-in six sided louvered cored mufflers which absorb sound not horsepower
      $332.21
    • Stainless Works® 304 SS High-Flow Catalytic Converter
      (0 reviews)
      # 83115043
      Universal 304 SS High-Flow Catalytic Converter by Stainless Works®. CARB Compliant: No. This superior product is made from high-grade stainless steel to ensure excellent quality and maximum resistance to corrosion. Engineered with...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $184.50
    • Vibrant Performance® GESI® High Output Catalytic Converters
      (0 reviews)
      # 78902206
      Universal GESI® High Output Catalytic Converters by Vibrant Performance®. Vibrant Performance and Global Emissions Systems Inc. (GESi®) have teamed up to supply a series of OBD2 (1996 and newer) high flow Catalytic Converters...
      EPA certified for use on OBD2 vehicles (1996 and newer) in jurisdictionswhere the installation of Universal Catalytic Converters is still permitted
      $335.21 - $448.35
    • Vibrant Performance® High Output Catalytic Converters
      (0 reviews)
      # 78902217
      Universal High Output Catalytic Converters by Vibrant Performance®. Vibrant Performance Metal or Ceramic Core Catalytic Converters are made entirely of Stainless Steel and feature a Monolith that is far more durable and capable...
      T304 Stainless Steel ConstructionThese Converters are covered by a 5 year / 50,000 mile warranty
      $75.76 - $109.10
    • Dynatech® PowerCat Stainless Steel Catalytic Converter
      (0 reviews)
      # 84198005
      Universal PowerCat Stainless Steel Catalytic Converter by Dynatech®. 1 Piece. The Dynatech PowerCAT catalytic convertor uses the latest technology in catalytic convertor design. Utilizing a Premium Metallic Substrate internal...
      Premium metallic substrateSuperior strength and durability
      $174.99
    • Thunderbolt® Car Diesel Catalytic Converter
      (1 reviews)
      # 82989181
      Universal Car Diesel Catalytic Converter by Thunderbolt®. 4" Round x 11" Long. These superior quality products are carefully engineered to improve exhaust flow and boost power of your vehicle. These Thunderbolt performance exhaust...
      Designed to improve exhaust flowBuilt to enhance the performance of your vehicle
      $79.39
    • Thunderbolt® Oval Catalytic Converter
      (1 reviews)
      # 82989467
      Universal Oval Catalytic Converter by Thunderbolt®. These superior quality products are carefully engineered to improve exhaust flow and boost power of your vehicle. These Thunderbolt performance exhaust products also help your...
      Designed to improve exhaust flowBuilt to enhance the performance of your vehicle
      $39.69 - $76.06




    Guides & Articles

    • Performance Exhaust Systems
      Here's A "Tip": Exhaust Tips Are An Easy Way To Dress Up Your Tailpipe
      Performance exhaust systems give you improvements in power output, sound levels, and appearance, all in one package. But let's face it: not everyone has the spare change to buy and bolt up one of these kits. So you soldier on with what you have. And that may be a tired-looking exhaust system that is still functional. You've spent all day washing and waxing the vehicle's paint and chrome to perfection, but no degree of elbow grease will make that tailpipe look better.
    • Performance Exhaust Systems
      Are Headers Worth The Performance Improvement?
      Engines have often been compared to air pumps, because the engine that’s most efficient in terms of economy and power is the one that can get air in and out of its cylinders the easiest. That’s why most performance modifications like conical air filters, cold air intake systems, headers, and cat-back exhaust systems are aimed at making the intake and exhaust systems less restrictive. These parts increase the flow of air into the engine and ease the flow of exhaust gas out of the engine. Among these components, headers may be the most difficult to install. In this article, we’ll discuss what headers do, their different types, and how much performance they can add to your car.
    • Performance Exhaust Systems
      Are X-pipes and H-pipes Better Than Straight Pipes on Dual Exhaust Systems?
      You may be wondering why so many aftermarket performance exhaust system manufacturers are offering dual exhaust systems connected by "H-pipe" or "X-pipe" sections. After all, aren't two separate pipes, or so-called "true duals", the best for performance? The answer is no, but to understand why we have to examine how a typical internal combustion engine works.
    • Performance Exhaust Systems
      Power, Sound, Looks | Can I Have It All With a Cat-Back Exhaust System?
      It's an age-old question that many have asked. Will an aftermarket exhaust be worth the expense? While they definitely can be, an important question to ask yourself is do you care more about the deeper sound they’re designed to produce, or the added performance gained from being less restrictive? As car enthusiasts, we’ve become accustomed to associating the sound of a car with its exhaust. After all, doesn’t everyone have a childhood memory or two of a car and the particular sound it made?
    • Bed Accessories
      Pickup Truck Cab And Bed Sizes Are Important When Selecting Accessories
      Americans love to have choices. Buying a dress shirt? Decide solid or stripe, short or long sleeve, cotton or poly blend, button or spread collar, regular fit, slim fit, or big & tall. How about a meal at your favorite steak house? Will it be porterhouse, T-bone, or sirloin? Cooked rare, medium-rare, or medium? With baked, mashed, or French fried potatoes? Thirsty for a fancy cup of coffee? Let's not even get started on options that let you end up with a "grande caramel macchiato with 1% low-fat milk, 2 Splendas, and an extra espresso shot".
    • Replacement Exhaust Parts
      Direct Fit vs. Universal Mufflers
      Regardless of whether you're shopping for a simple replacement muffler that delivers original equipment (OE) sound and performance or an upgraded muffler which provides a deeper growl with increased power through freer exhaust flow, you'll see choices between "direct fit" mufflers and "universal" mufflers. In this article, we'll help you understand the differences between these two styles so you can make a more informed purchase.

    Popular Products

    2005 Audi A4 Performance Exhaust Systems Reviews

    Average rating:  4.5  4.5 - 24 reviews
    5 of 5
    Just What I Needed
    As described and at the right price. Easy, fast delivery. A great buy!
    SPosted by Susan (Smith River, CA) /
    Was this review helpful for you? Yes
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