1999 Audi A4 Performance Exhaust Systems

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    • MagnaFlow® Touring Series Stainless Steel Cat-Back Exhaust System
      (0 reviews)
      # 20206391
      Audi A4 Quattro 1.8L 1999, Touring Series Stainless Steel Cat-Back Exhaust System by MagnaFlow®. Muffler Sound: MODERATE. Exit Location: Dual Straight Driver Side Rear Exit. Exit Quantity: Dual. Finish: Stainless. Exhaust Inlet...
      Moderate SoundDelivers More Horsepower
      $1,046.49
    • Borla® S-Type™ Stainless Steel Single Cat-Back Exhaust System
      (0 reviews)
      # 86041294
      Audi A4 Quattro 1.8L Standard (Manual) Transmission 1999, S-Type™ Stainless Steel Single Cat-Back Exhaust System by Borla®. Muffler Sound: AGGRESSIVE. Muffler Series: S-Type™. System Type: Cat-Back. Exit Location: Dual Left...
      Aggressive Plus SoundIncreased exhaust flow for better performance
      $856.99
    • MagnaFlow® Direct Fit California OBDII Catalytic Converter
      (0 reviews)
      # 22199319
      Audi A4 with TLEV Specification 1999, Direct Fit California OBDII Catalytic Converter by MagnaFlow®. Catalytic Series: OBDII. Catalytic Converter Substrate Material: Ceramic. CARB Compliant: Yes. Converter Configuration:...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $470.03 - $587.89
    • MagnaFlow® Direct Fit Federal OEM Grade Catalytic Converter
      (0 reviews)
      # 22198876
      Audi A4 / A4 Quattro 1.8L 1999, 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:...
      Reduces harmful emissionsIncreases exhaust flow compared to original factory converter
      $451.26
    • MagnaFlow® Direct Fit Federal Standard Catalytic Converter
      (1 reviews)
      # 98135258
      Audi A4 / A4 Quattro 1999, 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 body manufactured from heavy-duty stainless steelIncreases exhaust flow compared to original factory converter
      $362.13 - $470.03
    • Vibrant Performance® Exhaust Manifold Flange
      (0 reviews)
      # 78903443
      Audi A4 / A4 Quattro 1.8L 1999, 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 1999, 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)
      # 8747184
      Audi A4 1.8L 1999, CalCat™ Stainless Steel Direct Fit Catalytic Converter by Walker®. Includes: Converter Assembly. Catalytic Series: CalCat™. Catalytic Converter Substrate Material: Ceramic. CARB Compliant: CARB Compliant....
      $348.38
    • Walker® CalCat™ Small Oval Universal Fit Catalytic Converter
      (0 reviews)
      # 87065150
      Audi A4 2.8L 1999, CalCat™ Stainless Steel Universal Fit Catalytic Converter by Walker®. Catalytic Series: CalCat™. Catalytic Converter Substrate Material: Ceramic. CARB Compliant: CARB Compliant. Converter Configuration:...
      EPA & CARB Emissions Products Available for Most Vehicles5 Year / 50,000 Miles Warranty on Structural Components
      $164.46
    • Walker® Ultra™ Round Direct Fit Catalytic Converter
      (0 reviews)
      # 88067480
      Audi A4 1.8L 1999, 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)
      # 87065151
      Audi A4 Base 1.8L 1999, Ultra™ Stainless Steel Universal Fit Catalytic Converter by Walker®. Catalytic Series: Ultra™. Catalytic Converter Substrate Material: Ceramic. CARB Compliant: EPA Compliant. Converter Configuration:...
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      $82.85 - $103.92
    • Bosal® Direct Fit Catalytic Converter
      (0 reviews)
      # 88879808
      Audi A4 / A4 Quattro with TLEV Specification 1999, Direct Fit Catalytic Converter by Bosal®. Converter Configuration: Direct Fit. CARB Compliant: Yes. If you’re in need of a replacement catalytic converter, you can’t do better...
      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
      $201.31 - $336.59
    • Bosal® Direct Fit Catalytic Converter
      (0 reviews)
      # 95029998
      Audi A4 / A4 Quattro 2.8L 1999, Direct Fit Catalytic Converter by Bosal®. Converter Configuration: Direct Fit. CARB Compliant: No. Includes: Two O2 Sensor Ports. If you’re in need of a replacement catalytic converter, you can’t...
      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
      $243.57
    • Bosal® Direct Fit Premium Load Catalytic Converter
      (0 reviews)
      # 95030001
      Audi A4 1.8L 1999, 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)
      # 88879788
      Audi A4 / A4 Quattro 1999, 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,...
      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 CARB Direct Fit Catalytic Converter
      (0 reviews)
      # 111789180
      Audi A4 1999, Catalytic Converter by Eastern®. Catalytic Series: ECO CARB. 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
      $298.96 - $315.84
    • Eastern® ECO II Universal Fit Driver Side Oval Catalytic Converter
      (0 reviews)
      # 100277952
      Audi A4 2.8L 1999, Driver Side Catalytic Converter by Eastern®. Catalytic Series: ECO II. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Inlet Diameter: 2". Outlet Diameter: 2". CARB...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $64.60
    • Eastern® ECO II Universal Fit Passenger Side Round Catalytic Converter
      (0 reviews)
      # 100277951
      Audi A4 2.8L 1999, Passenger Side Catalytic Converter by Eastern®. Catalytic Series: ECO II. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Catalytic Converter Oxygen Sensor Location:...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $67.93
    • DEC® Direct Fit Catalytic Converter
      (0 reviews)
      # 81059104
      Audi A4 / A4 Quattro 1999, 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...
      Direct fitMade from a heavy duty stainless steel outer shell
      $264.60 - $320.60
    • AP Exhaust® 608 Series Catalytic Converter
      (0 reviews)
      # 81395947
      Audi A4 CARB Compliant / EPA Compliant 1999, 608 Series Catalytic Converter by AP Exhaust®. Three-Way No / Air OBDII By Design US-EPA Compliant catalytic converters are efficient at the oxidation of HC’s and CO, and very...
      Manufactured from high quality materialsDesign meet needs of OBDII equipped vehicles
      $89.29 - $94.45
    • AP Exhaust® Direct Fit Catalytic Converter
      (0 reviews)
      # 80124558
      Audi A4 CARB Compliant / EPA Compliant 1999, Direct Fit Catalytic Converter by AP Exhaust®. The growing concern for the environment means there is a growing need for quality emission control products. AP catalysts and catalytic...
      Manufactured from high quality materialsDesign meet needs of OBDII equipped vehicles
      $283.82 - $289.91
    • Davico® Direct Fit Catalytic Converter
      (0 reviews)
      # 83034858
      Audi A4 1999, Direct Fit Catalytic Converter by Davico®. Gaskets Included. EPA Compliant. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. Once your stock...
      Helps your vehicle emit harmless gasesDirect OEM replacement
      $189.00 - $460.68
    • Walker® Quiet-Flow™ Aluminized Muffler Assembly
      (0 reviews)
      # 17724365
      Audi A4 1999, Quiet-Flow™ Aluminized Muffler Assembly by Walker®. Muffler Series: Quiet-Flow™. Muffler Body Finish: Aluminized. Inlet Configuration: Offset. Together with delivering OE-style sound, the Quiet-Flow Muffler...
      $172.05 - $277.94
    • Bosal® Center Resonator Assembly
      (0 reviews)
      # 20554879
      Audi A4 1999, 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
      $237.16 - $262.02
    • Bosal® Muffler
      (0 reviews)
      # 88881150
      Audi A4 1999, 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
      $118.94 - $221.84
    • Genuine® Rear Muffler
      (0 reviews)
      # 8784701
      Audi A4 Quattro 2.8L 1999, Rear Muffler 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 waste...
      $530.52
    • Ansa® Muffler
      (0 reviews)
      # 80696080
      Audi A4 Quattro 1999, 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...
      Engineered to provide excellent exhaust system managementBuilt to the strict quality standards
      $162.75 - $293.73
    • AP Exhaust® Challenge Series Muffler
      (0 reviews)
      # 80124555
      Audi A4 2.8L CARB Compliant / EPA Compliant 1999, Challenge Series Muffler by AP Exhaust®. Cross Section: 4.5" x 11". Body Shape: Oval. Overall Length: 36". Inlet Diameter: 2.5". Outlet Diameter: 2.25". Includes Inlet / Outlet...
      Limited Lifetime Warranty backed by AP Exhaust Products100% aluminized components
      $77.94
    • AP Exhaust® Muffler Welded Assembly
      (0 reviews)
      # 80124552
      Audi A4 Quattro 1999, Muffler Welded Assembly by AP Exhaust®. AP engineers design mufflers using state-of-the-art SolidWorks 3-D modeling programs resulting in rapid prototype and production implementation.
      Aluminized components for longer lifeOriginal equipment appearance and performance
      $147.80 - $261.82
    • Walker® Intermediate Pipe
      (0 reviews)
      # 18153325
      Audi A4 1.8L 1999, Stainless Steel Aluminized Intermediate Pipe by Walker®. Material: Stainless Steel. Outlet Diameter: 2". Overall Length: 43.75". Inlet / Outlet Quantity: 1 Inlet / 1 Outlet. Inlet Connection Type: 3 Bolt Welded...
      Made of High Quality Aluminized SteelCorrosion Resistant
      $95.21 - $99.92
    • Walker® Replacement Exhaust Kit
      (0 reviews)
      # 115257490
      Audi A4 1999, 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...
      Catalytic Converters Designed to meet your vehicle’s specific emissions requirementsDirect fit replacement
      $95.21 - $277.94
    • Bosal® Exhaust Pipe
      (0 reviews)
      # 20554895
      Audi A4 1.8L 1999, 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
      $64.40 - $83.88
    • Ansa® Front Exhaust Pipe
      (0 reviews)
      # 80696077
      Audi A4 Quattro 1.8L 1999, 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...
      Engineered to provide excellent exhaust system managementBuilt to the strict quality standards
      $81.37 - $84.95
    • Starla® Front Exhaust Pipe
      (0 reviews)
      # 7792263
      Audi A4 1.8L Standard (Manual) Transmission 1999, Front Exhaust Pipe by Starla®. Location: Catalytic Converter to Center/Front Muffler. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system...
      $121.99
    • AP Exhaust® Prebent Pipe
      (0 reviews)
      # 80173671
      Audi A4 Quattro 1999, Prebent Pipe by AP Exhaust®. This superior product was carefully designed with key attention to detail and manufactured from high-grade materials to the strict standards of the highest quality. This AP Exhaust...
      100% aluminized pipes are constructed from heavy 14 and 16-gauge steelRe-aluminized weld seam to prevent corrosion
      $307.77 - $308.60
    • Walker® Standard U-Bolt Clamp
      (1 reviews)
      # 104613002
      Audi A4 1999, Standard Stainless Steel U-Bolt Clamp by Walker®. Material: Stainless Steel. Inlet / Outlet Quantity: 1 Inlet / 1 Outlet. With their extensive selection of accessories and hardware for the exhaust system, Walker will...
      Makes installation quick and easyOptimal OE-style fit and quality
      $1.98 - $2.19
    • Bosal® Exhaust Pipe Connector
      (0 reviews)
      # 95030005
      Audi A4 1999, 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
      $16.20 - $21.24
    • Bosal® Rubber Mounting
      (0 reviews)
      # 89024884
      Audi A4 1999, Rubber Mounting 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 OE-quality...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $4.58 - $7.66
    • Ansa® Exhaust Clamp
      (1 reviews)
      # 80696070
      Audi A4 Quattro 1999, Exhaust Clamp 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
      $2.06 - $22.95
    • Eberspaecher® Exhaust Clamp
      (0 reviews)
      # 7800633
      Audi A4 1999, 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 time...
      $18.17 - $22.18
    • Eberspaecher® Exhaust Hanger
      (0 reviews)
      # 53347490
      Audi A4 / A4 Quattro 1999, Exhaust Hanger by Eberspaecher®. Note: Middle Muffler and Front Mounting Position on Rear Muffler. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should...
      $9.62
    • Vaico® Rear Driver Side Exhaust System Hanger
      (0 reviews)
      # 8033954
      Audi A4 Quattro 1.8L 1999, 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...
      $19.24
    • AP Exhaust® Extra Heavy Duty Clamp
      (0 reviews)
      # 80392494
      Audi A4 Quattro 2.8L 1999, Extra Heavy Duty Clamp by AP Exhaust®. This superior product was carefully designed with key attention to detail and manufactured from high-grade materials to the strict standards of the highest quality....
      Made from first-rate materialsEnsures outstanding durability
      $10.68
    • Fel-Pro® Exhaust Manifold Gasket Set
      (0 reviews)
      # 40584393
      Audi A4 / A4 Quattro 1999, 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
      $7.20 - $23.47
    • Beck Arnley® Exhaust Manifold Gasket Set
      (0 reviews)
      # 35821208
      Audi A4 / A4 Quattro 1999, 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)
      # 90685717
      Audi A4 / A4 Quattro 1999, 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...
      $7.82 - $16.97
    • Walker® 3 Bolt Exhaust Gasket
      (0 reviews)
      # 18135639
      Audi A4 / A4 Quattro 1.8L 1999, 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:...
      Makes installation quick and easyOptimal OE-style fit and quality
      $6.62
    • Bosal® Exhaust Flange Gasket
      (0 reviews)
      # 20554885
      Audi A4 / A4 Quattro 1999, 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...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $4.72 - $10.04
    • Fel-Pro® Exhaust Pipe Flange Gasket
      (0 reviews)
      # 19064211
      Audi A4 / A4 Quattro 1999, 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
      $8.04
    • AJUSA® Exhaust Manifold Gasket Set
      (0 reviews)
      # 97661340
      Audi A4 / A4 Quattro 1.8L 1999, 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,...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $5.64
    • Victor Reinz® Exhaust Pipe Flange Gasket
      (0 reviews)
      # 90683257
      Audi A4 / A4 Quattro 2.8L 1999, Exhaust Pipe Flange Gasket by Victor Reinz®, Use 2 per Car. Flange Type. Exhaust Manifold to Exhaust Pipe. Material: Steel. This is an aftermarket part that replaces factory OE # 8D0 253 115 C, 8D0...
      $10.04
    • Vemo® Exhaust Gasket
      (0 reviews)
      # 7901420
      Audi A4 / A4 Quattro 2.8L 1999, Exhaust Gasket by Vemo®. Exhaust Manifold to Header Pipe. 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...
      $4.45
    • Bosal® Exhaust Washer
      (0 reviews)
      # 98823413
      Audi A4 1.8L 1999, Exhaust Washer 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
      $0.53
    • Bosal® Manifold Bolt
      (0 reviews)
      # 98823409
      Audi A4 1.8L 1999, Manifold Bolt 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 OE-quality...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $3.16
    • Bosal® Manifold Nut
      (0 reviews)
      # 99393294
      Audi A4 / A4 Quattro 1.8L 1999, Manifold Nut by Bosal®. Location: Converter to Front Pipe. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quick...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $3.34
    • Febi® Exhaust Nut
      (0 reviews)
      # 8392524
      Audi A4 / A4 Quattro 2.8L 1999, 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...
      $0.97
    • Genuine® Exhaust Stud
      (0 reviews)
      # 8820638
      Audi A4 / A4 Quattro 1.8L 1999, Exhaust Stud by Genuine®. Turbocharger To Exhaust Manifold. Mounting Studs 10X28Mm. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put...
      $2.37
    • AJUSA® Exhaust Manifold Gasket
      (0 reviews)
      # 97661363
      Audi A4 / A4 Quattro 2.8L 1999, 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...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $8.62
    • AJUSA® Catalytic Converter Gasket
      (0 reviews)
      # 97661332
      Audi A4 / A4 Quattro 1.8L 1999, 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 latest...
      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




    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

    1999 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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