2003 Mazda 6 Performance Exhaust Systems

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    • (0 reviews)
      Mazda 6 2003, Street Series Cat-Back Exhaust System by MagnaFlow®, MODERATE SOUND. The Street Series is designed for customers seeking increased performance and better economy, combined with a powerful and well tuned exhaust note,...
      $942.69from $754.15 - $799.19
      # 20210126
    • (0 reviews)
      Mazda 6 2.0L L4 2003, Stainless Steel Race Header by Weapon-R®, 4-2-1 type, 1-Piece. These free-flowing headers are designed to increase exhaust flow and make as much horsepower and torque as possible.
      $557.50$446.00
      # 290285
    • (0 reviews)
      Mazda 6 2003, Direct Fit California OBDII Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly replace the...
      $534.60from $427.68 - $452.73
      # 22208966
    • (0 reviews)
      Mazda 6 3.0L 2003, Direct Fit Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly replace the factory...
      $749.18from $599.34 - $618.06
      # 22208970
    • (0 reviews)
      Mazda 6 3.0L 2003, Direct Fit Federal Catalytic Converter by MagnaFlow®. 12.13" Wide. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly...
      $544.81$435.85
      # 35353835
    • (0 reviews)
      Mazda 6 2003, Direct Fit Federal Pre-OBDII Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly replace...
      $374.91from $299.93 - $472.07
      # 22208978
    • (0 reviews)
      Mazda 6 2003, Direct Fit OEM Grade Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly replace the...
      $448.48from $358.78 - $530.90
      # 22208973
    • (0 reviews)
      Mazda 6 2.3L 2003, Rear 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...
      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
      $278.10$222.48
      # 36757550
    • (0 reviews)
      Mazda 6 2003, Direct Fit Undercar Catalytic Converter by Eastern Catalytic®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle, this...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $325.55$260.44
      # 17574088
    • (0 reviews)
      Mazda 6 2003, Universal Fit Catalytic Converter by Eastern Catalytic®. Keep your exhaust emissions within specifications and your vehicle running in top condition with this quality product. Made of stainless steel, the catalytic...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $68.01from $54.41 - $60.66
      # 17579223
    • (0 reviews)
      Mazda 6 2.3L 2003, 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...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $5.98$4.78
      # 20554082
    • (0 reviews)
      Mazda 6 L4 2003, Exhaust Manifold by Dorman®. More like a complete kit than a single part, many of the Exhaust Manifolds include gaskets and hardware for a complete installation. Since this part is a direct replacement, the exact...
      Includes heat-shield for protection of hoses, wiring, and other engine componentsCast iron or stainless tubular construction protects against warping and/or cracking
      $521.06$416.85
      # 34109217
    • (0 reviews)
      Mazda 6 V6 with Federal Emissions 2003, Exhaust Manifold with Integrated Catalytic Converter by Dorman®. CARB not Compliant. Round Port. Material: Stainless Steel. Bolt Hole Quantity: 6. Includes: Exhaust Manifold, 1 Input Gasket,...
      Includes heat-shield for protection of hoses, wiring, and other engine componentsCast iron or stainless tubular construction protects against warping and/or cracking
      $405.63from $324.50 - $396.42
      # 34111250
    • (0 reviews)
      Mazda 6 V6 2003, Exhaust Manifold with Integrated Catalytic Converter by Walker®. This component is constructed for your vehicle’s specific emissions requirements and designed to meet EPA regulations. The part features the...
      Constructed to meet your vehicle’s specific emissions requirements49-State legal and 50-State legal catalytic converters are available
      $392.40from $313.92 - $381.03
      # 17723959
    • (0 reviews)
      Mazda 6 L4 2003, Direct Fit Catalytic Converter by Walker®. This catalytic converter is constructed specially for your vehicle to directly replace the original equipment part and comes ready to install. The part is designed to meet...
      Designed to meet your vehicle’s specific emissions requirementsDirect fit replacement
      $315.43from $252.34 - $400.69
      # 8751502
    • (0 reviews)
      Mazda 6 2003, Universal Catalytic Converter by Walker®. This part features the correct load of precious metals to ensure the proper limitation of tailpipe emissions. It is designed to meet the EPA policy and emission reduction...
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      $114.11from $91.29 - $145.55
      # 17731036
    • (0 reviews)
      Mazda 6 3.0L 2003, 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...
      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
      $325.21from $260.17 - $342.76
      # 20571643
    • (0 reviews)
      Mazda 6 2003, Catalytic Converter by DEC®. 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...
      $693.60from $554.88 - $586.76
      # 7644130
    • (0 reviews)
      Mazda 6 2003, Quiet-Flow Muffler by Walker®. Together with delivering OE-style sound, the Quiet-Flow Muffler features 100% structural stainless steel construction that resists rust three times longer than aluminized mufflers...
      Designed for OE equivalent sound and precision fitSpun-locked heads for a proper resistance to backfire
      $153.25from $122.60 - $124.25
      # 17740652
    • (0 reviews)
      Mazda 6 L4 2003, Resonator Assembly by Walker®. Material - Steel, Finish - Aluminized, 1st Body Dimensions - 18" L x 6" W x 6" H, 1st Body Shape - Round, 81.71" Overall Length, 1 Inlets, 2" Inlet Diameter, Inlet Connection Type - 2...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $147.89$118.31
      # 18166311
    • (0 reviews)
      Mazda 6 2003, 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
      $123.34from $98.67 - $147.66
      # 20571650
    • (0 reviews)
      Mazda 6 L4 2003, Spout by Walker®. Material - Stainless Steel, Finish - Steel, 5.5" Overall Length, 1 Inlets, 2.25" Inside Inlet Diameter, Inlet Connection Type - Pipe Connection, 1 Outlets, 3" Outside Outlet Diameter, Outlet...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $22.36$17.89
      # 18174916
    • (0 reviews)
      Mazda 6 3.0L 2003, Left Front 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...
      Stainless or aluminized steel construction for durabilityPrecision-manufactured for easy fitment
      $226.00$180.80
      # 20553133
    • (0 reviews)
      Mazda 6 2003, 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
      $5.08from $4.06 - $12.42
      # 20571660
    • (0 reviews)
      Mazda 6 2003, Exhaust Gasket 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 your time and...
      $8.00$6.40
      # 44733237
    • (0 reviews)
      Mazda 6 2003, 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 gaskets...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $14.39from $11.51 - $17.96
      # 19061844
    • (0 reviews)
      Mazda 6 2003, Exhaust Manifold Gasket 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 import vehicles in the...
      OE quality products from top original equipmentTop quality materials
      $20.09from $16.07 - $16.53
      # 35843596
    • (0 reviews)
      Mazda 6 2003, Exhaust Manifold Gasket by AJUSA®. These gaskets seal components in the intake and exhaust systems of the vehicle such as the intake manifold, intake plenum, and exhaust manifold to the engine or other components....
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $20.11from $16.09 - $16.53
      # 23011027
    • (0 reviews)
      Mazda 6 2003, 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...
      $14.96$11.97
      # 24164410
    • (0 reviews)
      Mazda 6 L4 2003, Spring by Walker®. 1 Inlet, 1 Outlet. 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...
      Makes installation quick and easyOptimal OE-style fit and quality
      $6.85$5.48
      # 18176009
    • (0 reviews)
      Mazda 6 3.0L 2003, Catalytic Converter Gasket by Victor Reinz®. 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 waste your...
      $4.78from $3.82 - $4.44
      # 24164403
    • (0 reviews)
      Mazda 6 2003, 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 Walker accessories,...
      Makes installation quick and easyOptimal OE-style fit and quality
      $7.35from $5.88 - $15.92
      # 18140742
    • (0 reviews)
      Mazda 6 2.3L 2003, 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, the...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $4.48from $3.58 - $16.94
      # 19069729
    • (0 reviews)
      Mazda 6 2003, Exhaust Pipe Connector Gasket by Victor Reinz®, Use 2 per Car. OEM Standard. Material: Steel. 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...
      $5.55$4.44
      # 24164460
    • (0 reviews)
      Mazda 6 3.0L 2003, Exhaust Pipe to Manifold Gasket by Victor Reinz®, Use 2 per Car. Exhaust Pipe to Manifold. OEM Standard. Material: Steel. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down...
      $5.55$4.44
      # 24042865
    • (0 reviews)
      Mazda 6 2.3L 2003, Exhaust Seal Ring 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...
      $22.23$17.78
      # 24164416
    • (0 reviews)
      Mazda 6 2003, Muffler by Ansa®. Note: Oval Tip. Generally used Sport Model, referred to as "Cutter A". Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for...
      $165.06from $132.05 - $171.84
      # 7779247
    • (0 reviews)
      Universal 10 Series Delta Force Single Chamber Race Muffler by Flowmaster®, AGGRESSIVE SOUND. The 10 Series Race mufflers are a compact lightweight single chamber design that will give a noticeable sound reduction compared to open...
      $94.53from $75.62 - $146.90
      # 898490
    • (0 reviews)
      Universal 30 Series Delta Force™ 3-Chamber Race Muffler by Flowmaster®, AGGRESSIVE SOUND. These are the most powerful and the quietest professional race mufflers available. 5.00” & 6.00” thick case sizes for maximum power and...
      $209.88from $167.90 - $267.60
      # 898450
    • (0 reviews)
      Universal 40 Series Delta Force™ 2-Chamber Race Muffler by Flowmaster®, AGGRESSIVE SOUND. The 40-Series mufflers offer a combination of maximum power and substantial dB-reduction compared to open headers. They are recommended for...
      $132.48from $105.98 - $230.86
      # 898479
    • (0 reviews)
      Universal 60 Series Delta Force Stainless Steel Race Muffler by Flowmaster®, MODERATE SOUND, 4" Offset Inlet / 4" Offset Outlet, 22" Length. These are the most powerful and the quietest professional race mufflers available.
      $246.58$197.26
      # 3146020
    • (1 reviews)
      Universal Outlaw™ Race Muffler by Flowmaster®, AGGRESSIVE SOUND. These mufflers are very small and lightweight. Attached directly to the collector they generally produce more power than open headers, while taking “the edge”...
      $111.25from $89.00 - $141.66
      # 898456
    • (1 reviews)
      Universal Pro Series™ Stainless Steel Race Muffler with Turn Down by Flowmaster®, MODERATE SOUND, 6" Diameter x 16" Case Length. Laminar Flow Mufflers have applications in all forms of racing. The Cool Shell Technology makes...
      $236.09$188.87
      # 898465
    • (0 reviews)
      Universal Scavenger Series Outlaw II Race Collector Muffler by Flowmaster®. These Delta Force Mufflers are designed to attach directly to the exhaust header primary tubes, replacing the collector in sprint and drag racing...
      $234.83from $187.86 - $208.84
      # 23297627
    • (0 reviews)
      Universal Scavenger Series Race Collector Muffler by Flowmaster®. These Delta Force Mufflers are designed to attach directly to the exhaust header primary tubes, replacing the collector in sprint and drag racing applications. They...
      $274.15$219.32
      # 898468
    • (1 reviews)
      Universal 40 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The 2-chamber design of this muffler, incorporating the patented Flowmaster Delta Flow...
      $108.85from $87.08 - $108.08
      # 897054
    • (0 reviews)
      Universal 40 Series Original Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. This is the muffler that launched the success of Flowmaster. It is an aggressive sounding...
      $108.85$87.08
      # 897079
    • (0 reviews)
      Universal 50 Series Delta Flow™ Muffler by Flowmaster®, MODERATE SOUND, 4" Thick x 9.75" Wide x 17" Case Length x 23" Overall Length. The 50 Series Delta Flow mufflers are designed for passenger cars. The sound characteristics...
      $133.78from $107.02 - $125.92
      # 897086
    • (0 reviews)
      Universal 50 Series Delta Flow™ Slimline Muffler by Flowmaster®, MODERATE SOUND. The 50 Series Delta Flow Slimline mufflers are designed for passenger cars. The sound characteristics are moderate exterior sound level and minimal...
      $168.74from $134.99 - $139.56
      # 897156
    • (0 reviews)
      Universal 60 Series Delta Flow™ Aluminized Steel Muffler by Flowmaster®, MILD SOUND, 2.25" Center Inlet / 2.25" Center Outlet, 5" Thick x 10" Wide x 13" Case Length x 19" Overall Length. The 60 Series increases horsepower and...
      $163.98$131.18
      # 897052
    • (0 reviews)
      Universal 70 Series Delta Flow™ Big Block Muffler by Flowmaster®, MILD SOUND, 5" Thick x 10" Wide x 22" Case Length x 28" Overall Length. The 70 Series Big Block II Muffler uses a longer case for increased volume and added...
      $190.19$152.15
      # 897109
    • (0 reviews)
      Universal Pro Series™ Laminar Flow Muffler by Flowmaster®, MODERATE SOUND. PRO Laminar Flow mufflers have a patented core design that is characterized by efficient exhaust scavenging and minimized drone. They produce a rich, deep...
      $183.63from $146.90 - $205.66
      # 897161
    • (5 reviews)
      Universal Super 10 Series Delta Flow™ Stainless Steel Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 5.50" Case Length x 12.50" Overall Length. If you want to be arrested, you should mount this muffler on your...
      $87.49from $69.99 - $73.44
      # 897126
    • (0 reviews)
      Universal Super 40 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 5" Thick x 10" Wide x 13.50" Case Length x 19.50" Overall Length. The Super 40 Series Delta Flow Mufflers are developed from the Top Ten muffler...
      $131.15from $104.92 - $109.49
      # 897132
    • (5 reviews)
      Universal Super 44 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The Super 44 has the deepest, richest, most aggressive muscle tone of all 4” street...
      $104.88from $83.90 - $94.44
      # 897136
    • (0 reviews)
      Universal Super HP-2™ Stainless Steel Performance Muffler by Flowmaster®, 4" Thick x 5" Wide. The new Super HP-2 Series muffler offers the same great performance benefits and moderate tone that you would expect from our laminar...
      $137.73from $110.18 - $178.38
      # 15943155
    • (0 reviews)
      Universal Resonator by Flowmaster®. The resonators are designed for use in conjunction with Flowmaster Mufflers for improved sound reduction and minimize interior resonance.
      $99.60from $79.68 - $124.88
      # 898502
    • (13 reviews)
      Universal S-Type™ Stainless Steel Round Muffler by Borla®. Get increased performance and the aggressive sound of power with this Universal S-Type Muffler. This is the same style austenitic stainless steel straight through muffler...
      $219.99$175.99
      # 25728287
    • (1 reviews)
      Universal XR-1™ Multicore Stainless Steel Race Muffler by Borla®. The Borla XR-1 Multi-Core Muffler was developed on the race track to quiet the most severe engine noise without restricting power. They work so well that they're...
      $306.24from $244.99 - $469.99
      # 959705
    • (1 reviews)
      Universal Heavy Duty Stainless Steel Round Muffler by Borla®, 3" Center Inlet / 3" Center Outlet. Get increased performance and the aggressive sound of power with this Heavy Duty Stainless Steel Round Muffler. This muffler includes...
      $262.49$209.99
      # 25728296



    Guides & Articles
    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...
    It has been a battle of the ages to make exhaust sound like it should. Having less bends or turns will not only improve the sound but also performance. A custom exhaust is always an option for the race inspired and spirited weekend warriors. Our manufactures offer everything needed to build a custom exhaust to your preference.
    Headers are installed because the stock exhaust manifolds usually flow poorly. An exhaust header has individual tubes for each exhaust port, allowing each exhaust pulse to flow unobstructed from the cylinder head. The tubes on headers are usually larger in diameter than the runners on an exhaust manifold and the tubes are mandrel bent for gradual radius bends.
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