2004 Chevy Impala Performance Exhaust Systems

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    • MagnaFlow® Street Series Stainless Steel Cat-Back Exhaust System
      (0 reviews)
      # 20206452
      Chevy Impala 2004, Street Series Stainless Steel Cat-Back Exhaust System by MagnaFlow®, MODERATE SOUND. Dual Split Rear Exit. 2.5" Tubing. 3.5" Double Wall Polished Stainless Tips. The Street Series is designed for customers...
      Moderate SoundDelivers More Horsepower
      $871.24
    • Corsa® Stainless Steel Cat-Back Exhaust System
      (0 reviews)
      # 1520306
      Chevy Impala 2004, Stainless Steel Cat-Back Exhaust System by Corsa®, Dual Rear Exit. Touring Sound. 2.5" Tubing. 3.5" Twin Pro-Series Polished Tips. The patented Reflective Sound Cancellation (RFC) technology provides a unique...
      Reserved but Distinctive Performance ToneStraight-Through Nonrestrictive Design for Improved Performance and Fuel Economy
      $1,288.52
    • DynoMax® Super Turbo™ Cat-Back Exhaust System
      (0 reviews)
      # 18215796
      Chevy Impala SS 2004, Super Turbo™ Cat-Back Exhaust System by DynoMax®. 2.5" Tubing. With U-Bolt Pipe. Dyno proven to flow up to 70 SCFM. Get improved exhaust flow and reduced back pressure for better performance, and a mellow...
      Constructed to increase horsepower and torque thanks to improved exhaust flowStainless steel Super Turbo muffler will maintain a mellow performance tone
      $458.09
    • Flowmaster® 282 Series Stainless Steel OBDII Round Catalytic Converter
      (0 reviews)
      # 868657
      Chevy Impala Base 2004, 282 Series Stainless Steel OBDII Round Catalytic Converter by Flowmaster®, 2.5" Inlet / 2.5" Outlet. 16" Length. 5" Width. Includes Heat Shield. The new Flowmaster replacement catalytic converters are made...
      Exceed all federal emission standardsStainless Steel shells
      $99.24
    • MagnaFlow® Direct Fit California OBDII Catalytic Converter
      (0 reviews)
      # 22197215
      Chevy Impala 3.8L 2004, Direct Fit California OBDII Catalytic Converter by MagnaFlow®. 2.5" Inlet / 2.5" Outlet Diameter. 10" Wide. Includes Gaskets, Post-Cat Sensor. Without Air Tube. If your car needs replacement, install one...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $659.73
    • MagnaFlow® Direct Fit Federal OEM Grade Catalytic Converter
      (0 reviews)
      # 61587596
      Chevy Impala 2004, Direct Fit Federal OEM Grade Catalytic Converter by MagnaFlow®. 10" Wide. Includes Gaskets. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $311.35 - $398.13
    • MagnaFlow® Direct Fit Federal Pre-OBDII Catalytic Converter
      (0 reviews)
      # 61587597
      Chevy Impala 2004, Direct Fit Federal Pre-OBDII Catalytic Converter by MagnaFlow®. 2.5" Inlet / 2.5" Outlet Diameter. 10" Wide. Includes Gasket, Pre and Post-Cat Sensors. Without Air Tube. If your car needs replacement, install one...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $215.85 - $241.57
    • DynoMax® Race Series Muffler
      (0 reviews)
      # 18215745
      Chevy Impala SS 2004, Race Series Muffler by DynoMax®. 2.25" Inlet / 2.25" Outlet. 18" Body Length, 4" Body Width, 4" Body Height. CRF Technology which helps provide up to a 4 dbA sound reduction, on most race applications, while...
      Unrestricted, straight-through design for a dyno tested and track proven increase in horsepower and torqueEngineered to provide a deep race sound
      $57.93
    • DynoMax® Super Turbo™ Direct Fit Muffler
      (1 reviews)
      # 18220730
      Chevy Impala SS 2004, Super Turbo™ Direct Fit Muffler by DynoMax®. 2.25" Offset Inlet / 2.5" Center Outlet. 14" Body Length, 9.75" Body Width, 4.25" Body Height. No Reversible. Get improved exhaust flow and reduced back pressure...
      Constructed to increase horsepower and torque thanks to improved exhaust flowAluminized steel Super Turbo muffler maintains a mellow performance tone
      $80.58
    • DynoMax® Polished Exhaust Tip
      (0 reviews)
      # 52153739
      Chevy Impala SS 2004, Polished Exhaust Tip by DynoMax®. 2.5" Inlet / 4" Outlet. These clamp-on stainless steel exhaust tips come in a variety of styles and sizes to make it easy for you to bolt on a custom look. Available in single...
      304 Stainless Steel construction for longevity and corrosion resistanceMirror Polished for a show-like shine
      $30.30
    • DynoMax® Intermediate Pipe
      (0 reviews)
      # 18219277
      Chevy Impala SS 2004, Intermediate Pipe by DynoMax®. 2.25" Inlet / 2.25" Outlet. With their great selection of exhaust pipes and accessories, DynoMax will provide you with everything necessary to complete the exhaust job. Every...
      Designed to ensure unrestricted exhaust flowDirect fit – no modifications needed to install
      $17.88 - $49.15
    • DynoMax® Y-Pipe
      (0 reviews)
      # 18216655
      Chevy Impala SS 2004, Y-Pipe by DynoMax®. 2.5" Inlet / 2.5" Outlet. 35.12" Overall Length. With their great selection of exhaust pipes and accessories, DynoMax will provide you with everything necessary to complete the exhaust job....
      Designed to ensure unrestricted exhaust flowDirect fit – no modifications needed to install
      $83.24
    • Bosal® Exhaust Flange Gasket
      (0 reviews)
      # 36901512
      Chevy Impala 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
      $4.06 - $4.68
    • Dorman® Exhaust Manifold
      (0 reviews)
      # 16497258
      Chevy Impala 2004, Exhaust Manifold by Dorman®, 1 Piece. Material: Cast Iron. Packaging Type: Box. Color: Unfinished. Standard Replacement. More like a complete kit than a single part, many of the Exhaust Manifolds include gaskets...
      Includes heat-shield for protection of hoses, wiring, and other engine componentsCast iron or stainless tubular construction protects against warping and/or cracking
      $54.30 - $163.24
    • Walker® Direct Fit Catalytic Converter
      (0 reviews)
      # 17736610
      Chevy Impala 2004, 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...
      Designed to meet your vehicle’s specific emissions requirementsDirect fit replacement
      $196.15 - $334.00
    • Walker® Universal Fit Catalytic Converter
      (0 reviews)
      # 8742549
      Chevy Impala 2004, 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
      $85.93 - $148.93
    • Bosal® Catalytic Converter
      (0 reviews)
      # 20556453
      Chevy Impala 2004, 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
      $191.70 - $201.14
    • Eastern® Direct Fit Catalytic Converter
      (0 reviews)
      # 54548289
      Chevy Impala 2004, 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
      $193.50 - $204.75
    • Eastern® Universal Fit Catalytic Converter
      (0 reviews)
      # 54548292
      Chevy Impala without Air Tube 2004, Universal Fit Undercar Catalytic Converter by Eastern Catalytic®. Whether your catalytic converter is damaged by road debris or failed due to an engine problem, you definitely need a new one, and...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $96.11
    • DEC® Direct Fit Catalytic Converter
      (0 reviews)
      # 64460763
      Chevy Impala 2004, Direct Fit Catalytic Converter by DEC®. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic converters are made from a heavy duty stainless...
      Direct fitMade from a heavy duty stainless steel outer shell
      $246.33 - $321.55
    • Walker® Quiet-Flow™ SS Muffler
      (0 reviews)
      # 18159687
      Chevy Impala Base / LS 2004, Quiet-Flow™ SS Muffler by Walker®. Body Material - Stainless Steel, Color / Finish - Aluminized, Dimensions - 15" L x 11" W x 5.5" H, Oval Shape, Inlet Diameter - 2.25" OD, Outlet Diameter - 2.25" OD,...
      Designed for OE equivalent sound and precision fitSpun-locked heads for a proper resistance to backfire
      $71.17
    • Walker® SoundFX™ Direct Fit Muffler
      (0 reviews)
      # 18167657
      Chevy Impala Base / LS 2004, SoundFX™ Direct Fit Muffler by Walker®. Body Material - Steel, Color / Finish - Aluminized, Dimensions - 15" L x 11" W x 5.5" H, Oval Shape, Inlet Diameter - 2.25" ID, Outlet Diameter - 2.25" OD,...
      Designed to deliver ultimate performance and pleasing sound qualityOE-equivalent direct-fit design
      $49.32
    • Walker® Resonator Assembly
      (0 reviews)
      # 18164397
      Chevy Impala Base / LS 2004, Resonator Assembly by Walker®. Material - Steel, Finish - Aluminized, 1st Body Dimensions - 26" L x 4" W x 4" H, 1st Body Shape - Round, 31.125" Overall Length, 1 Inlets, 2.25" Inlet Diameter, Inlet...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $63.34
    • Dorman® Exhaust Manifold Crossover Pipe
      (0 reviews)
      # 16720193
      Chevy Impala 2004, Exhaust Manifold Crossover Pipe by Dorman®, 1 Piece. Packaging Type: Box. Color: Stainless. Product Width: 6". More like a complete kit than a single part, Dorman’s Exhaust Crossover Pipe includes all necessary...
      Comes with two flange bolts and one flange gasket per side for ease of installationRust-resistant for long-lasting performance
      $158.01 - $169.29
    • Walker® Intermediate Pipe
      (0 reviews)
      # 18154476
      Chevy Impala Base / LS 2004, Intermediate Pipe by Walker®. Finish - Aluminized, 51.875" Overall Length, 1 Inlets, 2.25" Outside Inlet Diameter, Inlet Connection Type - Pipe Connection, 1 Outlets, 2.25" Outside Outlet Diameter,...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $33.26
    • Fel-Pro® Exhaust Manifold Gasket Set
      (0 reviews)
      # 40600698
      Chevy Impala 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
      $9.76 - $43.51
    • Victor Reinz® Exhaust Manifold Gasket
      (0 reviews)
      # 24091111
      Chevy Impala 2004, Exhaust Manifold Gasket by Victor Reinz®, Use 1 per Car. OEM Standard. Material: Multi-Layered Steel. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto...
      $15.90
    • Victor Reinz® Catalytic Converter Gasket
      (0 reviews)
      # 24032549
      Chevy Impala 3.4L 2004, Catalytic Converter Gasket by Victor Reinz®, Use 1 per Car. Rear. Flange Gasket. OEM Standard. Material: Graphite. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down...
      $2.86
    • Dorman® Exhaust Flange Stud and Nut
      (0 reviews)
      # 31665114
      Chevy Impala 2004, Exhaust Flange Stud and Nut by Dorman®, 1 Piece. Front. This is an aftermarket part that replaces factory OE # 11519831, 22604451, 24504965, 24576687, N811115S. Dorman’s Exhaust Flange Stud & Nut provides you...
      Direct replacement for a proper fit every timeDurable steel construction
      $6.61
    • Walker® Gasket
      (0 reviews)
      # 18136828
      Chevy Impala 2004, 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...
      Makes installation quick and easyOptimal OE-style fit and quality
      $5.75 - $12.88
    • Walker® Insulator
      (0 reviews)
      # 18148789
      Chevy Impala Base / LS 2004, Insulator 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
      $1.87 - $6.73
    • Walker® U-Bolt Clamp
      (1 reviews)
      # 18122142
      Chevy Impala Base / LS 2004, U-Bolt Clamp by Walker®. Heavy Duty Clamp Type, Hex Nut Type, 2.25" Diameter, 1 Inlet, 1 Outlet. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide...
      Makes installation quick and easyOptimal OE-style fit and quality
      $2.25
    • Fel-Pro® Exhaust Pipe Flange Gasket
      (0 reviews)
      # 40600699
      Chevy Impala 2004, 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
      $5.64 - $12.36
    • Victor Reinz® Exhaust Pipe Flange Gasket
      (0 reviews)
      # 24042397
      Chevy Impala 3.8L 2004, Exhaust Pipe Flange Gasket by Victor Reinz®, Use 1 per Car. Exhaust Pipe to Manifold. Flange Gasket. OEM Standard. Material: Steel. When you’re low on oil, coolant or some other fluid, you may be tempted...
      $8.40
    • Victor Reinz® Exhaust Seal Ring
      (0 reviews)
      # 24091053
      Chevy Impala 2004, 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...
      $8.95 - $9.62
    • Flowmaster® 60 Series Delta Force Stainless Steel Race Muffler
      (0 reviews)
      # 3146020
      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.
      Race Proven TechnologyNoticeable Sound Reduction Compared to Open Headers
      $197.26
    • Flowmaster® Pro Series Outlaw™ Race Muffler
      (0 reviews)
      # 62419096
      Universal Pro Series Outlaw™ Race Muffler by Flowmaster®, AGGRESSIVE SOUND. Inlet / Outlet Position: Center. Outlet Diameter: 3". Body Height: 5". Body Width: 5". Body Length: 9". These mufflers are very small and lightweight....
      Race Proven TechnologyPure Race Muffler
      $89.00
    • Flowmaster® 60 Series Delta Flow™ Muffler
      (0 reviews)
      # 897052
      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...
      Stainless Steel ConstructionDyno Tuned For Maximum Performance
      $131.18
    • MagnaFlow® Glass Pack Red Coated Aluminized Steel Muffler
      (0 reviews)
      # 61459909
      Universal Glass Pack Red Coated Aluminized Steel Muffler by MagnaFlow®. The Glass Pack Mufflers have the same high performance optimizing, straight-through design as the more expensive MagnaFlow mufflers. They are made in...
      Red Coated 100% aluminized steelNon-fiberglass acoustic packing material
      $35.14 - $51.26
    • Borla® S-Type™ Stainless Steel Round Muffler
      (12 reviews)
      # 25728287
      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...
      Increased exhaust flow for better performanceDefinite performance tone at cruise with a throaty, aggressive sound during acceleration
      $175.99
    • Borla® XR-1™ Multicore Stainless Steel Race Muffler
      (0 reviews)
      # 959705
      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...
      The most possible exhaust flow in a muffler for maximum performanceQuiets the most severe engine noise, leaving a pronounced sound of power
      $244.99 - $469.99
    • Borla® Heavy Duty Stainless Steel Round Muffler
      (0 reviews)
      # 25728296
      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...
      Increased exhaust flow for better performanceDefinite performance tone at cruise with a throaty, aggressive sound during acceleration
      $209.99
    • Gibson® CFT Superflow™ Oval Muffler
      (1 reviews)
      # 2060024
      Universal CFT Superflow™ Oval Muffler by Gibson®. Get optimum usable power and a deep powerful sound with a Gibson CFT Superflow Muffler. The CFT Superflow has one of the lowest restriction ratings of any muffler on the market,...
      Chambered and louvered design for increased exhaust flowDirectional louvered tuning ports for maximum exhaust flow
      $85.99 - $137.66
    • Gibson® SFT Superflow™ Round Muffler
      (2 reviews)
      # 2060137
      Universal SFT Superflow™ Round Muffler by Gibson®. Get increased exhaust flow for more power and great sound with a Gibson SFT Superflow Muffler. The SFT Superflow has one of the lowest restriction ratings of any muffler on the...
      Baffled and chambered structure for increased exhaust flowStraight through design increases exhaust flow
      $93.78 - $291.94
    • Gibson® Race Muffler
      (0 reviews)
      # 26542951
      Universal Race Muffler by Gibson®. Inspite of the large host of engineers and technicians, Gibson Performance has not lost its commitment to building cost-effective exhaust systems that deliver more performance for less spendings....
      Heavy Duty Mandrel Bent Tubing50 State Emissions Llegal
      $172.81
    • Gibson® 8" Round Muffler
      (0 reviews)
      # 26542948
      Universal 8" Round Muffler by Gibson®, 3.5" Center Inlet / 3.5" Center Outlet, 24" Length. Get increased exhaust flow for more power and great sound with a Gibson Muffler. The straight through, baffled and chambered design gives...
      Baffled and chambered structure for increased exhaust flowImproved low and mid-range performance
      $183.55 - $199.29
    • MBRP® Installer Series™ Round Muffler
      (0 reviews)
      # 3724354
      Universal Installer Series™ Aluminized Steel Round Muffler by MBRP®. Short on space under your car for a muffler? A round muffler might just be the ticket to tuck in around a drive shaft or up near the cats. Choose whether you...
      Round form factor for tight spots16GA aluminized steel
      $124.99 - $169.99
    • MBRP® Pro Series™ T304 Stainless Steel Round Muffler
      (0 reviews)
      # 14446428
      Universal Pro Series™ T304 Stainless Steel Round Muffler by MBRP®. Your car is for show and go; add a little show with this polished T304 stainless steel muffler from MBRP. The mirror finish won’t ever peel, flake or corrode....
      Dual-core designPolished T304 stainless
      $224.99 - $244.99
    • MBRP® XP Series™ Stainless Steel Round Muffler
      (1 reviews)
      # 3724348
      Universal XP Series™ T409 Stainless Steel Round Muffler by MBRP®. Short on space under your car for a muffler? A round muffler might just be the ticket to tuck in around a drive shaft or up near the cats. Choose whether you want...
      Round form factor for tight spotsPerformance or milder tone
      $95.23 - $224.99
    • MBRP® Black Series™ Round Muffler
      (0 reviews)
      # 3724351
      Universal Black Series™ Black Aluminized Steel Round Muffler by MBRP®. Black is the new chrome, so here’s a chance to build an all-black exhaust system perfect for your “murdered-out” custom car. Constructed of Aluminized...
      Spiral louver straight-through designHigh density packing ensures long life
      $149.99 - $169.99
    • MBRP® Resonator
      (0 reviews)
      # 3746758
      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
      $104.99 - $159.99
    • aFe® Mach Force XP Stainless Steel Oval Muffler
      (0 reviews)
      # 4395697
      Universal Stainless Steel Oval Muffler by aFe®. You'll get increased performance and improved throttle response when you install the aFe Universal Fit 409 Stainless Steel Performance Muffler. This muffler has a deep, throaty,...
      Increased performanceImproved throttle response
      $125.00 - $135.00
    • aFe® Mach Force XP Stainless Steel Round Muffler
      (0 reviews)
      # 4372324
      Universal Stainless Steel Round Muffler by aFe®, 30" Overall Length x 8" Diameter. You'll get increased performance and improved throttle response when you install the aFe Universal Fit 409 Stainless Steel Performance Muffler. This...
      Increased performanceImproved throttle response
      $150.00 - $170.00
    • Weapon-R® Black Muffler
      (0 reviews)
      # 26065987
      Universal Black Muffler by Weapon-R®. This muffler is a part of Weapon-R’s Inter-Lock Universal Muffler System. This system allows the length and style of the Exhaust Tip to be changed.
      Fits most cars and trucksMade of Stainless Steel
      $140.00
    • Injen® Universal Muffler
      (9 reviews)
      # 379105
      Universal Muffler by Injen®. Let loose all the horsepower locked in your engine by your stock restrictive muffler, and experience the sound of that power with the Injen stainless steel universal muffler. This is the same muffler...
      Straight through muffler designManufactured from 100% 304 stainless steel
      $168.30 - $202.73
    • Spec-D® Apexi N1 Muffler
      (13 reviews)
      # 17970438
      Universal Apexi N1 Muffler 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 and mufflers with large diameter...
      Dramatically improved exhaust flow compared to restrictive stock systemImproved engine breathing enables increased power output for better performance
      $32.04 - $320.40
    • Spec-D® Dual DTM Muffler
      (0 reviews)
      # 26139478
      Universal Dual DTM Muffler by Spec-D®, Outlet 2.5". Inlet 2.5". Size: 24" x 8" x 5". 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
      $35.60
    • Spec-D® Fireball-style Muffler
      (5 reviews)
      # 26510852
      Universal Fireball-style Muffler by Spec-D®, Outlet 3.5". Inlet 2.5". Size: 17.5x5x5. 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
      $32.04
    • Spec-D® Stainless Steel Muffler with Oval Tip
      (1 reviews)
      # 10984916
      Universal Stainless Steel Muffler with Oval Tip by Spec-D®, Outlet 5.5". Inlet 2.5". Size: 23" x 8" x 5". Make whatever you drive run and sound like a high-performance machine with a Spec-D Exhaust System. The Spec-D system...
      Dramatically improved exhaust flow compared to restrictive stock systemImproved engine breathing enables increased power output for better performance
      $35.60
    • Bosal® Muffler with Dual Angle Cut Tips
      (1 reviews)
      # 18403017
      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
      $77.00



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    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...
    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.
    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...
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    2004 Chevy Impala Performance Exhaust Systems Reviews
    Average rating: 5 5 - 1 reviews
    (5)
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    2006 Chevy Impala | Posted by Scott | (Manteca, CA)

    Ordered a new Magnaflow Catalytic Converter for my 2006 Impala LT. Not only did they match the lowest price I was able to find for this part, but they gave me a discount and I got free shipping and no tax making this a great deal! Part was received on time and in perfect condition.

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    2004 Chevy Impala Models
    • 2004 Chevy Impala Base Performance Exhaust Systems
    • 2004 Chevy Impala LS Performance Exhaust Systems
    • 2004 Chevy Impala SS Performance Exhaust Systems