2004 Subaru Outback Performance Exhaust Systems

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    • (0 reviews)
      # 62247299
      Subaru Outback 2.5L 2004, Direct Fit California OBDII Catalytic Converter by MagnaFlow®. Catalytic Series: OBDII. Catalytic Converter Substrate Material: Ceramic. Converter Body Material: Stainless Steel. CARB Compliant: Yes....
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $668.99 - $695.43
    • (0 reviews)
      # 61590393
      Subaru Outback 2004, 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....
      Reduces harmful emissionsIncreases exhaust flow compared to original factory converter
      $342.64 - $577.26
    • (0 reviews)
      # 61590392
      Subaru Outback 3.0L 2004, 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
      $435.80 - $518.41
    • (0 reviews)
      # 61627148
      Subaru Outback 2004, 0.030" MLS Exhaust Head Gasket by Cometic Gasket®. Compressed Thickness: 0.030". Port Style: Stock. Cometic MLS Gaskets are comprised of multiple layers of stainless steel providing a even load across the...
      Made of High Quality MaterialsBuilt to Last
      $33.03
    • (0 reviews)
      # 116551717
      Subaru Outback 2.5L 2004, Exhaust Manifold Gasket Set by Magnum Gasket®. Standard Material. You'd better be ready to take the heat if you're going to seal an exhaust manifold, where temperatures can often exceed 1,000°F. You can...
      Made of High Quality MaterialsThe best combination of steel layers and high-temp gasket materials
      $8.96
    • (2 reviews)
      # 177011544
      Subaru Outback 2004, 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...
      Direct fit replacementIncludes all applicable flanges, hangers, and sensor fittings
      $55.13 - $394.64
    • (0 reviews)
      # 87068700
      Subaru Outback 2004, CalCat™ Catalytic Converter by Walker®. Catalytic Series: CalCat™. CARB Compliant: Yes. Converter Configuration: Universal Fit. Inlet Diameter B: 2". Outlet Quantity: 1 Outlet. Walker offers complete...
      RIGHT loading of precious metalsThe proper catalyst material and design
      $107.70 - $155.63
    • (1 review)
      # 8739904
      Subaru Outback 2004, Ultra™ Catalytic Converter by Walker®. Catalytic Series: Ultra™. Catalytic Converter Substrate Material: Ceramic. CARB Compliant: No. Converter Configuration: Direct Fit. Outlet Quantity: 1 Outlet. This...
      Designed to meet your vehicle’s specific emissions requirementsDirect fit replacement
      $226.00 - $394.64
    • (0 reviews)
      # 20582649
      Subaru Outback 2004, Catalytic Converter by Bosal®. Converter Configuration: Direct Fit. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to vehicle...
      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
      $230.27 - $475.38
    • (0 reviews)
      # 17575711
      Subaru Outback 2004, Direct Fit Catalytic Converter by Eastern®. Outlet A: 2 Bolt Welded. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle,...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $236.04 - $398.71
    • (0 reviews)
      # 172053714
      Subaru Outback 2.5L 2004, 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...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $71.48 - $87.35
    • (0 reviews)
      # 86074983
      Subaru Outback 2004, Catalytic Converter by DEC®. Converter Configuration: Direct Fit. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic converters are made...
      Direct fitMade from a heavy duty stainless steel outer shell
      $284.63 - $557.20
    • (0 reviews)
      # 83041621
      Subaru Outback 2004, Direct Fit Catalytic Converter by Davico®. CARB Compliant: No. Converter Configuration: Direct Fit. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged...
      Helps your vehicle emit harmless gasesDirect OEM replacement
      $240.09 - $524.59
    • (0 reviews)
      # 8752472
      Subaru Outback 2004, Quiet-Flow™ Stainless Steel Oval Muffler Assembly by Walker®. Muffler Series: Quiet-Flow™. Inlet Diameter: 2". Outlet Diameter: 2". Muffler Body Height: 7". Muffler Body Width: 9". Muffler Body Length: 17"....
      Designed for OE equivalent sound and precision fitSpun-locked heads for a proper resistance to backfire
      $79.19 - $114.30
    • (0 reviews)
      # 17742560
      Subaru Outback 2004, Stainless Steel Aluminized Round Resonator Assembly by Walker®. Muffler Body Height: 3". Muffler Body Width: 3". Muffler Body Length: 10". Muffler Body Finish: Aluminized. Muffler Body Shape: Round. CARB...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $99.41 - $104.83
    • (0 reviews)
      # 35486351
      Subaru Outback Wagon 2004, SoundFX™ Aluminized Steel Oval Direct-Fit Muffler by Walker®. Muffler Series: SoundFX™. Inlet Diameter: 2". Outlet Diameter: 2". Muffler Body Height: 7". Muffler Body Width: 9". Muffler Body Length:...
      Designed to deliver ultimate performance and pleasing sound qualityOE-equivalent direct-fit design
      $55.13
    • (0 reviews)
      # 20582653
      Subaru Outback 2004, 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...
      Aluminized steel construction for maximum durabilityOne Piece interior to end cap construction to reduce flex and stand up to vehicle vibration
      $102.80 - $122.84
    • (0 reviews)
      # 95034672
      Subaru Outback 2004, 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...
      Aluminized steel construction for maximum durabilityOne Piece interior to end cap construction to reduce flex and stand up to vehicle vibration
      $93.81 - $109.19
    • (0 reviews)
      # 80702180
      Subaru Outback 2004, 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
      $81.03 - $136.40
    • (1 review)
      # 123330244
      Subaru Outback H4 with Two Converter Bodies 2004, Aluminized Steel Front Pipe by Walker®. CARB Compliant: No. Material: Aluminized Steel. Overall Length: 22.5". Inlet Quantity: 1 Inlet. Outlet Quantity: 1 Outlet. Inlet Connection...
      Made of High Qua;lity Aluminized SteelCorrosion Resistant
      $120.12
    • (1 review)
      # 20553232
      Subaru Outback 2.5L 2004, 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
      $114.69
    • (0 reviews)
      # 35486347
      Subaru Outback 2004, Rubber Insulator by Walker®. Material: Rubber. Overall Length: 2.5". Inlet Quantity: 1 Inlet. Outlet Quantity: 1 Outlet. With their extensive selection of accessories and hardware for the exhaust system, Walker...
      Makes installation quick and easyOptimal OE-style fit and quality
      $5.11
    • (0 reviews)
      # 95029612
      Subaru Outback 2.5L 2004, Rear Rubber Mounting by Bosal®. Location: Rear. 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...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $7.22
    • (0 reviews)
      # 44711593
      Subaru Outback 2004, Exhaust Hanger by Genuine®. Rear Muffler. 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...
      $49.94
    • (0 reviews)
      # 8714179
      Subaru Outback 2.5L Manufactured Before February 29 2004, Exhaust Manifold Gasket by Nippon Reinz®. Located Between Cylinder Head and Y-Pipe. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $8.81
    • (0 reviews)
      # 40720260
      Subaru Outback 2004, 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, the...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $8.42 - $12.88
    • (0 reviews)
      # 24041941
      Subaru Outback 2.5L 2004, Exhaust Manifold Gasket Set by Victor Reinz®, Use 1 per Car. OEM Standard. Material: Composite. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto...
      $11.42
    • (0 reviews)
      # 158137279
      Subaru Outback 2004, Exhaust Manifold Gasket Set by DNJ Engine Components®. Get this top-grade quality replacement for your worn out part from DNJ. Expertly crafted from premium materials, this product is of the finest quality to...
      Designed to restore your vehicle's original performanceProvides superior sealing performance
      $8.22 - $8.70
    • (0 reviews)
      # 24207070
      Subaru Outback 2004, Catalytic Converter 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...
      $8.68 - $12.66
    • (1 review)
      # 85235531
      Subaru Outback 2004, Exhaust Gasket 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...
      Makes installation quick and easyOptimal OE-style fit and quality
      $2.57 - $14.33
    • (0 reviews)
      # 20582660
      Subaru Outback 2004, 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
      $3.16 - $15.18
    • (0 reviews)
      # 40581463
      Subaru Outback 3.0L 2004, Left Exhaust Pipe Flange Gasket by Fel-Pro®. Location: Converter. 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...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $12.76
    • (0 reviews)
      # 24207085
      Subaru Outback 2004, Exhaust Pipe Flange Gasket by Victor Reinz®, Use 2 per Car. Exhaust Pipe to Manifold. 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...
      $6.82 - $9.26
    • (0 reviews)
      # 7747770
      Subaru Outback 2.5L 2004, Exhaust Gasket by HJS®. Note: Main Catalyst to Pre-Silencer. 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...
      $13.89
    • (0 reviews)
      # 98823271
      Subaru Outback 2.5L 2004, Exhaust Installation Kit by Bosal®. Location: Front and Rear Converter. Bosal has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $12.01
    • (0 reviews)
      # 199201460
      Subaru Outback 2.5L with Two Converter Bodies 2004, Direct Fit Standard Grade Stainless Steel Federal Catalytic Converter by Flowmaster®. Catalytic Converter Overall Length: 36". Inlet Type A: 2 Bolt Welded Flange. Outlet Type A: 2...
      Made of High Quality Stainless SteelImprove Torque and Throttle Response
      $327.33
    • (0 reviews)
      # 80695603
      Subaru Outback 2.5L 2004, Front Exhaust Pipe by Ansa®. Position: Front. This premium part is essential for completing a professional exhaust installation. The key a well-functioning vehicle is about purchasing only premium quality...
      Engineered to provide excellent exhaust system managementBuilt to the strict quality standards
      $142.04
    • (0 reviews)
      # 91560836
      Universal Steel Chrome Shielded Side Exhaust System by Patriot Exhaust®. Exhaust Pipe Material: Steel. Main Piping Diameter: 2". 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 - $294.31
    • (0 reviews)
      # 193552081
      Universal Spec II™ Stainless Steel Inner Silencer by Buddy Club®. Developed strictly for competition use the Buddy Club Racing Spec II exhaust system is the pinnacle of all competition exhaust systems available today. A racing...
      Specially designed system for competition use onlyIncrease of exhaust gas velocity in order to improve efficiency
      $40.00
    • (0 reviews)
      # 139245596
      Universal Super Competition™ Weld-Up Race Kit by Hooker®. Series: Super Competition™. Hooker Weld-up kits work great for racers who need to build custom headers when a specific fit tuned Super Competition header is not...
      Mandrel Bent 1 pc. PrimariesSS NHRA Contingency ID Header Tags
      $270.95 - $529.95
    • (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
      $339.21
    • (6 reviews)
      # 120105855
      Universal 200 Series Stainless Steel Round Catalytic Converter by Flowmaster®. Catalytic Series: 200 Series. CARB Compliant: No. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter...
      Exceed all federal emission standardsStainless Steel shells
      $116.53 - $204.95
    • (5 reviews)
      # 120105826
      Universal 220 Series Stainless Steel Oval Catalytic Converter by Flowmaster®. Catalytic Series: 220 Series. CARB Compliant: No. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter...
      Exceed all federal emission standardsStainless Steel shells
      $66.26 - $68.56
    • (5 reviews)
      # 120105830
      Universal 222 Series Stainless Steel Round Catalytic Converter by Flowmaster®. Catalytic Series: 222 Series. CARB Compliant: No. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter...
      Exceed all federal emission standardsStainless Steel shells
      $67.12
    • (1 review)
      # 120105834
      Universal 223 Series Stainless Steel Round Catalytic Converter by Flowmaster®. Catalytic Series: 223 Series. CARB Compliant: No. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter...
      Exceed all federal emission standardsStainless Steel shells
      $73.86
    • (1 review)
      # 120105838
      Universal 225 Series Stainless Steel Oval Catalytic Converter by Flowmaster®. Catalytic Series: 225 Series. CARB Compliant: No. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter...
      Exceed all federal emission standardsStainless Steel shells
      $68.02 - $71.98
    • (6 reviews)
      # 120105843
      Universal 240 Series Stainless Steel Oval Catalytic Converter by Flowmaster®. Catalytic Series: 240 Series. CARB Compliant: No. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter...
      Exceed all federal emission standardsStainless Steel shells
      $129.60 - $144.93
    • (5 reviews)
      # 120105847
      Universal 250 Series Stainless Steel Oval Catalytic Converter by Flowmaster®. Catalytic Series: 250 Series. CARB Compliant: No. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter...
      Exceed all federal emission standardsStainless Steel shells
      $130.99 - $147.34
    • (6 reviews)
      # 120105859
      Universal 282 Series OBDII Stainless Steel Catalytic Converter by Flowmaster®. Catalytic Series: 282 Series. CARB Compliant: No. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. The new Flowmaster...
      Exceed all federal emission standardsStainless Steel shells
      $102.20 - $142.92
    • (1 review)
      # 120105881
      Universal 284 Series OBDII Stainless Steel Oval Catalytic Converter by Flowmaster®. Catalytic Series: 284 Series. CARB Compliant: No. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic...
      Exceed all federal emission standardsStainless Steel shells
      $187.88
    • (5 reviews)
      # 120105850
      Universal 290 Series Stainless Steel Oval Catalytic Converter by Flowmaster®. Catalytic Series: 290 Series. CARB Compliant: No. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter...
      Exceed all federal emission standardsStainless Steel shells
      $108.66 - $128.44
    • (1 review)
      # 120105892
      Universal 3940 Series OBDII Stainless Steel Catalytic Converter by Flowmaster®. Catalytic Series: 3940 Series. CARB Compliant: Yes. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. The new...
      Exceed all federal emission standardsStainless Steel shells
      $216.35 - $277.90
    • (0 reviews)
      # 129455702
      Universal 304 SS High-Flow Catalytic Converter by Stainless Works®. CARB Compliant: No. Converter Configuration: Universal Fit. This superior product is made from high-grade stainless steel to ensure excellent quality and maximum...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $184.50
    • (1 review)
      # mpn739977875
      Universal High-Flow Catalytic Converter with Metallic Substrate Kit by Pypes®. CARB Compliant: Yes. CARB Compliant: 50-State Legal. Converter Configuration: Universal Fit. Includes: Metallic Substrate Kit. These Mini converters are...
      409 stainlesss steel construction resists corrosionWith slots and 02 bung
      $141.99
    • (0 reviews)
      # 118614769
      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
    • (0 reviews)
      # 118614780
      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
    • (0 reviews)
      # 171670470
      Universal Catalytic Converter by Kooks®. EPA certified. 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, this product by Kooks...
      Handles Exhaust Temperatures up to 1500FEliminates Emissions Related "Check Engine Light" (90% Success Rate)
      $136.81 - $142.41
    • (0 reviews)
      # 171670504
      Universal Green Ultra High Flow Catalytic Converter by Kooks®. EPA certified. 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,...
      Handles Exhaust Temperatures up to 1500FEliminates Emissions Related "Check Engine Light" (90% Success Rate)
      $353.24 - $379.49
    • (0 reviews)
      # 129719053
      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
    • (0 reviews)
      # 139371689
      Universal Performance Bullet Catalytic Converters 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...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $65.65 - $119.05




    Guides & Articles

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      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
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      Are X-pipes and H-pipes Better Than Straight Pipes on Dual Exhaust Systems?
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      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?
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    Popular Products

    2004 Subaru Outback Performance Exhaust Systems Reviews

    Average rating:  5  5 - 1 review
    4.8 of 5
    Good Quality
    The product looks awesome and well built. I have yet to install them, but the overall quality looks great.
    APosted by Andrew (Mona, UT) /
    2004 Subaru Forester
    Was this review helpful for you? Yes
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