2003 Subaru WRX Exhaust Parts

    • Walker®Ultra™ Universal Fit Catalytic Converter
      $120.20$96.16
      (0)
      Subaru WRX 2003, Ultra™ Universal Fit Catalytic Converter by Walker®. without Air Tube, Body Dimensions - 4.250" H x 10.000" L x 6.125" W, Body Material - Stainless Steel, Body Shape - Small Oval, Universal, Connection Type -...
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      # 17735462
    • Agency Power®Manifold Temp Reducer Gaskets
      $50.00$40.00
      (0)
      Subaru WRX 2.0L / 2.5L 2003, Manifold Temp Reducer Gaskets by Agency Power®. When switching from 4 lug to 5 lug hubs, the shock mounts for those wanting to use their existing shocks or coilovers will need spacers. These spacers fit...
      # 15847660
    • Fel-Pro®Exhaust Pipe Flange Gasket
      $10.70from $8.56
      (0)
      Subaru WRX 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 gaskets...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      # 19072091
    • AJUSA®Exhaust Manifold Gasket
      $8.94$7.15
      (0)
      Subaru WRX 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
      # 23005817
    • Fel-Pro®Exhaust Manifold Gasket Set
      $16.51$13.21
      (0)
      Subaru WRX 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...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      # 19064013
    • Beck Arnley®Exhaust Manifold Gasket
      $17.69$14.15
      (0)
      Subaru WRX 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...
      OE quality products from top original equipmentTop quality materials
      # 35812558
    • Eastern®Universal Catalytic Converter
      $40.38from $32.30
      (3)
      Universal 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 converter is...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      # 17427860
    • Bosal®Muffler with Dual Angle Cut Tips
      $86.24$68.99
      (0)
      Universal Muffler with Dual Angle Cut Tips 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,...
      Designed to deliver ultimate performance and a quality OE-style soundAluminized steel construction for maximum durability
      # 18403017
    • Eastern®Flex Pipe
      $11.41from $9.13
      (4)
      Universal Flex Pipe by Eastern Catalytic®. The product is perfect for absorbing vibration and movement in the exhaust system. Made of braided stainless steel, the flex pipe is also a shield from road debris that could get kicked up...
      Ensures leak-free connectionsDecreases engine noise and vibration
      # 17428341
    • Eastern®Cowbell
      $5.38from $4.30
      (0)
      Universal Cowbell by Eastern Catalytic®. If you need a quality cowbell connector because your factory part is damaged or rusted, Eastern Catalytic has the part you need. Constructed from OE spec materials, this product perfectly...
      Made of solid materialsOffered in the widest range of configurations
      # 17428404
    • DEC®49-State OBDI Catalytic Converter
      $406.84$325.47
      (0)
      Subaru WRX 2.0L 2003, 49-State OBDI Catalytic Converter by DEC®. Not Legal in California. Position: Center. 49 State Compliant, Not Approved for Sale or Use in California. Note: Not approved for sale or use in California. Is your...
      # 7630487
    • Ansa®Muffler
      $413.29$330.63
      (0)
      Subaru WRX 2.0L 2003, Muffler by Ansa®. Position: Rear. 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...
      # 7771143
    • Genuine®Connecting Pipe
      $430.70$344.56
      (0)
      Subaru WRX 2.0L 2003, Connecting Pipe by Genuine®. Note: Connects the 2 Exhaust Manifolds. 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...
      # 8802097
    • Genuine®Exhaust Gasket
      $39.25$31.40
      (0)
      Subaru WRX 2003, Exhaust Gasket by Genuine®. Note: Sealing Ring - Intermediate pipe to Main Catalyst. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for...
      # 8922125
    • Weapon-R®CEL Eliminator
      $56.25$45.00
      (4)
      Universal CEL Eliminator by Weapon-R®. CEL Light Eliminator gets rid of the Check Engine Light and will not effect the performance of your vehicle. We carefully test and research the correct amount air / fuel ratio which is needed...
      # 290727
    • Agency Power®Stainless Steel Header
      $750.00$600.00
      (0)
      Subaru WRX 2.0L / 2.5L 2003, Stainless Steel Header by Agency Power®. Adding a high quality exhaust header is a great way to gain power for your car. The Agency Power stainless steel exhaust header is constructed with quality in...
      Increases horsepower and torqueManufactured from 304 stainless steel
      # 15847894
    • MagnaFlow®Street Series Cat-Back Exhaust System
      $857.05from $685.64
      (0)
      Subaru WRX 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...
      # 35201457
    • Flowmaster®dBX™ Stainless Steel Cat-Back Exhaust System
      $710.03$568.02
      (0)
      Subaru WRX 2003, dBX™ Stainless Steel Cat-Back Exhaust System by Flowmaster®, MODERATE SOUND. dBX Series Muffler. Single Rear Exit. 3" Tubing. 4" Polished Stainless Steel Tip. The dBX Series produces an exhaust note with the same...
      # 41558585
    • Borla®Stainless Steel Cat-Back Exhaust System
      $753.74$602.99
      (0)
      Subaru WRX Wagon 2003, Stainless Steel Cat-Back Exhaust System by Borla®, AGGRESSIVE SOUND, Single Left Rear Exit. 4" Inlet / 8" Outlet Single Round Half-Rolled Angle-Cut Phantom Tip. 2.5" Tubing. When you want the best performing,...
      # 43943417
    • Borla®Touring™ Stainless Steel Cat-Back Exhaust System
      $849.99$679.99
      (0)
      Subaru WRX 2003, Touring™ Stainless Steel Cat-Back Exhaust System by Borla®, MILD GROWL SOUND, Dual Left Rear Exit. 3.19" Inlet / 6" Outlet Dual Round Rolled Angle-Cut Long Tip. 3" Tubing. When you want the best performing, best...
      # 1221327
    • Borla®S-Type™ Stainless Steel Cat-Back Exhaust System
      $882.49$705.99
      (0)
      Subaru WRX 2003, S-Type™ Stainless Steel Cat-Back Exhaust System by Borla®, AGGRESSIVE PLUS SOUND, Single Left Rear Exit. 4.5" Inlet Single Round Rolled Angle-Cut Phantom Tip. 3" Tubing. When you want the best performing, best...
      # 26117591
    • ARK Performance®N-II Stainless Steel Cat-Back Exhaust System with Polished Tip
      $1,337.69$1,070.15
      (0)
      Subaru WRX 2003, N-II Stainless Steel Cat-Back Exhaust System by ARK Performance®. 4.5" Single Tip. 3" Pipe. The ARK N-II cat-back exhaust system offers straight-through technology, offset tip design, and large piping diameter. All...
      All Bolt-on SystemStraight-through Muffler Core
      # 16118542
    • Agency Power®Cat-Back Exhaust System with Titantium Muffler
      $750.00$600.00
      (0)
      Subaru WRX 2003, Cat-Back Exhaust System with Titantium Muffler by Agency Power®. The Cat-Back is designed for customers seeking increased performance and better economy, combined with a powerful and well tuned exhaust note, making...
      Suitable for Everyday DrivingIncreases Power
      # 15847517
    • DC Sports®Stainless Steel Cat-Back Exhaust System
      $646.58$517.26
      (0)
      Subaru WRX 2003, Polished Stainless Steel Cat-Back Exhaust System by DC Sports®, Single Canister. DC Sports race-inspired Dual Canister systems are available for V6 and select four-cylinder application. Our Dual Canister systems...
      # 11019613
    • Spec-D®N1 Style Cat-Back Exhaust System (3" Inlet)
      $126.56$101.25
      (1)
      Subaru WRX 2003, N1 Style Cat-Back Exhaust System (3" Inlet) by Spec-D®. Make whatever you drive run and sound like a high-performance machine with a Spec-D Exhaust System. The Spec-D system replaces your restrictive factory pipes...
      Dramatically improved exhaust flow compared to restrictive stock systemImproved engine breathing enables increased power output for better performance
      # 12205952
    • Spec-D®N1 Style Cat-Back Exhaust System with Burnt Tip (3" Inlet)
      $126.56$101.25
      (0)
      Subaru WRX 2003, N1 Style Cat-Back Exhaust System with Burnt Tip (3" Inlet) by Spec-D®. Make whatever you drive run and sound like a high-performance machine with a Spec-D Exhaust System. The Spec-D system replaces your restrictive...
      Dramatically improved exhaust flow compared to restrictive stock systemImproved engine breathing enables increased power output for better performance
      # 12205960
    • Flowmaster®dBX Series™ Stainless Steel Laminar Flow Muffler
      $187.49$149.99
      (0)
      Subaru WRX 2003, dBX Series™ Stainless Steel Laminar Flow Muffler by Flowmaster®, MODERATE SOUND, 2.5" Center Inlet / 2.5" Center Outlet, 6" Diameter x 14" Case Length. dBX Laminar Flow mufflers have a patented core design that...
      # 848579
    • Flowmaster®40 Series Delta Flow™ Muffler
      $112.49from $89.99
      (0)
      Subaru WRX 2003, 40 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 2.25" Offset Inlet / 2.25" Center Outlet, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The 2-chamber design of this muffler,...
      # 851497
    • Flowmaster®40 Series Delta Force™ Muffler
      $96.88$77.50
      (0)
      Subaru WRX 2003, 40 Series Delta Force™ Aluminized Steel Muffler by Flowmaster®, AGGRESSIVE SOUND, 2.25" Offset Inlet / 2.25" Center Outlet, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. This is the muffler that...
      # 34439594
    • Flowmaster®40 Series Original Stainless Steel Muffler
      $103.74$82.99
      (0)
      Subaru WRX 2003, 40 Series Original Stainless Steel Muffler by Flowmaster®, AGGRESSIVE SOUND, 2.25" Offset Inlet / 2.25" Center Outlet, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. This is the muffler that launched...
      # 34439595
    • Flowmaster®Super 44 Series Delta Flow™ Muffler
      $99.94from $79.95
      (0)
      Subaru WRX 2003, Super 44 Series Delta Flow™ Muffler by Flowmaster®, AGGRESSIVE SOUND, 2.25" Offset Inlet / 2.25" Center Outlet, 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The Super 44 has the deepest, richest,...
      # 34441974
    • Flowmaster®Resonator
      $87.49from $69.99
      (0)
      Universal Resonator by Flowmaster®. The resonators are designed for use in conjunction with Flowmaster Mufflers for improved sound reduction and minimize interior resonance.
      # 898502
    • MBRP®Resonator
      $87.49from $69.99
      (0)
      Universal Resonator by MBRP®. This resonator will remove freeway drone without adding backpressure to your exhaust system. You’ll appreciate the classic MBRP sound when you use this resonator.
      Straight-through designWill never corrode
      # 3746758
    • MBRP®Mirror Polished T304 Stainless Steel Exhaust Stack
      $199.99from $159.99
      (0)
      Universal Mirror Polished T304 Stainless Steel Exhaust Stack by MBRP®. Nothing says big-rig brawn like a set of stacks belching diesel exhaust straight up in the air. It’s a great look for a diesel pickup, as well as being...
      4” or 5” connection to exhaust pipe in bedPolished T304 stainless steel tubing
      # 3746770
    • MBRP®Smokers™ Stack Kit
      $262.49from $209.99
      (0)
      Universal Smokers™ Stack Kit by MBRP®. Nothing says big-rig brawn like a set of stacks belching diesel exhaust straight up in the air. It’s a great look for a diesel pickup, as well as being totally practical. Pick the stack...
      5” connection to exhaust pipe in bedFits any 5” SMOKER stack system
      # 10453086
    • MBRP®Black Series™ Exhaust Stack
      $162.49from $129.99
      (1)
      Universal Black Series™ Exhaust Stack by MBRP®. Black is the new chrome, they say. These large-diameter stacks are finished in BMRP's long-lasting ceramic high-heat finish. They'll turn heads in ways that polished stainless...
      4” or 5” connection to exhaust pipe in bedPolished T304 stainless steel tubing
      # 3746783
    • AutoLoc®Exhaust Flame Thrower Kit
      $124.99from $99.99
      (0)
      Universal Exhaust Flame Thrower Kit by AutoLoc®. The exhaust flame thrower kit is a must have for all hot rods. This kit can make up to 20’ flames shoot out your exhaust on command.
      Remote activation buttonCase: plastic
      # 9663588
    • Omix-Ada®Exhaust Insulator
      $15.51from $12.41
      (0)
      Universal Exhaust Insulator by Omix-Ada®. Major parts like mufflers and pipes may be the stars of the exhaust system, but they couldn't do their jobs without the supporting cast of clamps, gaskets, and hangers. Omix-Ada has all the...
      Meets or exceeds OEM quality standardsOEM quality at an affordable price
      # 6894382
    • Omix-Ada®Exhaust Bracket
      $18.04$14.43
      (0)
      Universal Exhaust Bracket by Omix-Ada®. Major parts like mufflers and pipes may be the stars of the exhaust system, but they couldn't do their jobs without the supporting cast of clamps, gaskets, and hangers. Omix-Ada has all the...
      Meets or exceeds OEM quality standardsOEM quality at an affordable price
      # 6894576
    • Mr. Gasket®Reflect-A-Tape
      $38.63from $30.90
      (0)
      Universal Reflect-A-Tape by Mr. Gasket®. Look to Mr. Gasket first for exhaust system gaskets, of course. But they have other exhaust system components to offer as well.
      Gaskets are Mr. Gasket’s heritage and corporate specialtyGasket material in sheets allow you to make your own gaskets when no premade gasket is available
      # 12129567
    • Taylor Cable®D.E.T.I.™ Digital Exhaust Temperature Indicator Probe
      $19.75from $15.80
      (0)
      Universal D.E.T.I.™ Digital Exhaust Temperature Indicator Probe by Taylor Cable®. Taylor Cable makes exhaust manifold and collector gaskets that will withstand the temperatures generated by turbocharged motors, and exhaust gas...
      # 9786114
    • Taylor Cable®57K Series D.E.T.I.™ Digital Exhaust Temperature Indicator
      $400.79from $320.63
      (0)
      Universal 57K Series D.E.T.I.™ Digital Exhaust Temperature Indicator by Taylor Cable®. Taylor Cable makes exhaust manifold and collector gaskets that will withstand the temperatures generated by turbocharged motors, and exhaust...
      # 9786142
    • Taylor Cable®Exhaust Insulation Wrap
      $22.46from $17.97
      (0)
      Universal Exhaust Insulation Wrap by Taylor Cable®. Taylor Cable makes exhaust manifold and collector gaskets that will withstand the temperatures generated by turbocharged motors, and exhaust gas temperature monitors to see...
      # 9786216
    • Taylor Cable®57K Series Infrared TireScope Data Logger
      $584.13$467.30
      (0)
      Universal 57K Series Infrared TireScope Data Logger by Taylor Cable®. With 10' Steel Braided Lead, Infrared Thread-In Probe. Taylor Cable makes exhaust manifold and collector gaskets that will withstand the temperatures generated...
      # 9786950
    • Taylor Cable®Header Wrap Boot Protector Kit
      $38.38$30.70
      (0)
      Universal Header Wrap Boot Protector Kit by Taylor Cable®. Contains 16' of 1200 Degree Wrap. Taylor Cable makes exhaust manifold and collector gaskets that will withstand the temperatures generated by turbocharged motors, and...
      # 9786224
    • Spectre Performance®Header Bolt
      $10.44from $8.35
      (0)
      Universal Header Bolt by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the racetrack! All products are...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      # 12061779
    • Spectre Performance®Exhaust Header Reducer
      $20.88$16.70
      (1)
      Universal Exhaust Header Reducer by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the racetrack! All products...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      # 12056627
    • MagnaFlow®Direct Fit Federal Pre-OBDII Catalytic Converter
      $400.39from $320.31
      (0)
      Subaru WRX 2003, Direct Fit Federal Pre-OBDII Catalytic Converter by MagnaFlow®. 2.5" Inlet / 2.5" Outlet Diameter. 7.63" Wide. Without Air Tube. If your car needs replacement, install one that will get you through the smog check...
      # 22212369
    • MagnaFlow®Direct Fit Federal OEM Grade Catalytic Converter
      $498.45from $398.76
      (0)
      Subaru WRX 2003, Direct Fit Federal OEM Grade Catalytic Converter by MagnaFlow®. 2.5" 7.63" Wide. Without Air Tube. If your car needs replacement, install one that will get you through the smog check and give you more horsepower....
      # 22212372
    • DC Sports®Polished Stainless Steel Turbo Manifold
      $547.48$437.98
      (0)
      Subaru WRX 2003, Polished Stainless Steel Turbo Manifold by DC Sports®. DC Sports Turbo Manifolds are the perfect upgrade for customers looking to extract the most power from their factory turbocharged vehicle. Because of the high...
      # 11019539
    • Skunk2®MegaPower™ Muffler
      $197.49$157.99
      (0)
      Subaru WRX 2003, MegaPower™ Muffler by Skunk2®. 5.25" Canister. 2.25" Inlet Diameter. Skunk2 muffler is designed to maximize exhaust flow and power. Each muffler by Skunk2 is constructed from T-304 stainless steel and TIG welded...
      Increases performance by maximizing power and flowConstructed from T-304 stainless steel
      # 38815855
    • Flowmaster®Delta Force™ Low Profile Oval Tubing Race Muffler
      $372.49$297.99
      (0)
      Universal Delta Force™ Aluminized Steel Low Profile Oval Tubing Race Muffler by Flowmaster®, Aggressive Sound, 3.50" Dual Inlet / 3.50" Dual Outlet, 2.75 Thick x 11" Wide x 25" Length. The low profile mufflers are Delta Flow™...
      # 898448
    • Flowmaster®30 Series Delta Force™ 3-Chamber Race Muffler
      $199.99from $159.99
      (0)
      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...
      # 898450
    • Flowmaster®Outlaw™ Race Muffler
      $112.49from $89.99
      (1)
      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”...
      # 898456
    • Flowmaster®Pro Series™ Stainless Steel Race Muffler with Turn Down
      $224.99$179.99
      (1)
      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...
      # 898465
    • Flowmaster®Scavenger Series Race Collector Muffler
      $261.24$208.99
      (0)
      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...
      # 898468
    • Flowmaster®40 Series Delta Force™ 2-Chamber Race Muffler
      $126.21from $100.97
      (0)
      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...
      # 898479
    • Flowmaster®10 Series Delta Force Single Chamber Race Muffler
      $94.53from $75.62
      (0)
      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...
      # 898490
    • Flowmaster® 60 Series Delta Force Stainless Steel Race Muffler
      $234.99$187.99
      (0)
      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.
      # 3146020
    • Flowmaster®Scavenger Series Outlaw II Race Collector Muffler
      $223.75from $179.00
      (0)
      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...
      # 23297627



    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...
    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.