2003 GMC Sierra Performance Headers

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    • (0 reviews)
      # mpn682370
      GMC Sierra 4.8L / 5.3L 2003, Twisted Steel™ 409 SS Mid-Length Tube Exhaust Headers by aFe®. Primary Tubing Diameter: 1.625". Emissions: EPA compliant. Header Style: Mid-Length Tube. The new Twisted Steel performance header from aFe...
      $798.00
    • (0 reviews)
      # 761284034
      GMC Sierra 2003, Classic Polish Style Stainless Steel Ceramic Coated Long Tube Exhaust Headers by Jet-Hot®. Primary Tubing Diameter: 1.75". Collector Outlet Diameter: 3". Emissions: EPA compliant. Finish: Ceramic Coated. Color: Chrome....
      $748.80
    • (0 reviews)
      # mpn912077
      GMC Sierra 4.8L / 5.3L 2003, Scavenger Series Elite 4-1 One-Piece Style Stainless Steel Silver Ceramic Coated Short Tube Exhaust Headers by Flowmaster®. Primary Tubing Diameter: 1.63". Collector Outlet Diameter: 2.5". Emissions: CARB...
      $632.40
    • (0 reviews)
      # 812783736
      GMC Sierra 6.6L 2003, BladeRunner Exhaust Manifold by aFe®. Emissions: EPA compliant. Replace the exhaust manifold on your Dodge diesel with the BladeRunner manifold. It was created to address a cracking problem with the stock manifold,...
      $493.05 - $954.75
    • (0 reviews)
      # 1022314060
      GMC Sierra with Air Conditioning with Power Steering 2003, Standard Duty Mild Steel Black MAXX Satin Black Ceramic-Metallic Exhaust Headers by Hedman Hedders®. Primary Tubing Diameter: 1.625". Finish: Black MAXX Satin Black...
      $506.39 - $631.75
    • (0 reviews)
      # 496426069
      GMC Sierra RWD with Air Conditioning with Power Steering 2003, Standard Duty Mild Steel Uncoated Long Tube Exhaust Headers by Hedman Hedders®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3". Emissions: Racing Only....
      $270.14
    • (0 reviews)
      # 97233067
      GMC Sierra with Air Conditioning with Power Steering with Manual Transmission Floor Shifter with Tubular Exhaust Manifold System 2003, Standard Duty Short Tube Exhaust Headers by Hedman Hedders®. Header Style: Short Tube. After more...
      $330.07 - $902.92
    • (0 reviews)
      # 1022184104
      GMC Sierra with Air Conditioning with Power Steering 2003, Street 304 SS Exhaust Headers by Hedman Hedders®. Emissions: Racing Only.
      $717.50 - $966.71
    • (0 reviews)
      # 46328292
      GMC Sierra without Air Injection 2003, TorqueTube™ Exhaust Manifold System by Banks®. Cast OEM exhaust manifolds just are too restrictive. Replacing them with Banks Torque Tubes will substantially reduce the backpressure where it...
      Shorty style fits in stock engine bayImproves power, reduces fuel consumption
      $586.07
    • (1 review)
      # 266668820
      GMC Sierra 2003, Tuned Length Steel Short Tube Exhaust Headers by BBK®. Primary Tubing Diameter: 1.75". Emissions: CARB compliant. Header Style: Short Tube. Gain 15-20 dyno-proven horsepower at the rear wheels just by bolting on a set...
      $349.99 - $479.99
    • (0 reviews)
      # 902231039
      GMC Sierra RWD 4.8L / 5.3L 2003, Long Tube Exhaust Headers by Flowtech®. Primary Tubing Diameter: 1.75". Collector Outlet Diameter: 3". Emissions: Racing Only. Header Material: Mild Steel. Header Style: Long Tube. What happens when...
      $429.95 - $536.95
    • (0 reviews)
      # 231283144
      GMC Sierra 2003, Short Tube Exhaust Headers by Flowtech®. Collector Outlet Diameter: 2.5". Header Style: Short Tube. Flowtech’s emissions-friendly headers are just the ticket for those who want the best of both worlds – top...
      $308.95 - $474.95
    • (0 reviews)
      # 64184749
      GMC Sierra RWD 2003, Super Competition™ Long Tube Exhaust Headers by Hooker®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3". Collector Length: 6". Emissions: Racing Only. Header Style: Long Tube. All necessary...
      $520.95 - $674.95
    • (0 reviews)
      # mpn358945643
      GMC Sierra 1500 / 1500 HD 2003, SuperMAXX Stainless Steel Natural Long Tube Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.75". Emissions: Racing Only. Finish: Natural. Color: Natural. Header Coating: Uncoated. Header Style:...
      $799.99
    • (0 reviews)
      # mpn4351213861
      GMC Sierra 4.8L / 5.3L / 6.0L 2003, Exhaust Headers by Advance Adapters®. Emissions: EPA compliant. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
      High quality at an affordable priceExpertly made from premium materials
      $263.82
    • (0 reviews)
      # mpn548039259
      GMC Sierra 3500 6.6L without EGR 2003, Pulse Flow Hi-Sil Moly Exhaust Manifold with Pedestal Flange T4 Turbo by ATS Diesel Performance®. ATS Pulse Flow Exhaust Manifolds for the 6.6L Duramax offer far less restriction than stock...
      30% larger internal diameter in critical areasConstructed out of High Silica Moly for strength and promote thermal energy transfer
      $1,135.25
    • (0 reviews)
      # mpn358497436
      GMC Sierra 6.6L 2003, Exhaust Manifold Kit by BD Diesel Performance®. This BD Diesel Performance product is just the option for you in case you want to get the most out of your auto. It is made from first-rate materials to provide the...
      Pre-drilled for pyrometer probesCast of high silicon ductile iron to withstand extreme temperature cycling caused during DPF regeneration and in high performance applications
      $165.00
    • (0 reviews)
      # 448035753
      GMC Sierra 4.8L / 5.3L Automatic Transmission 2003, 4-Tube Steel Long Tube Exhaust Headers by Doug's Headers®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.5". Emissions: CARB compliant. Header Style: Long Tube. Doug's...
      $634.75 - $828.41
    • (0 reviews)
      # 346372244
      GMC Sierra 2500 HD / 3500 8.1L 2003, Cat4ward Stainless Steel Shorty Exhaust Headers by JBA®. Primary Tubing Diameter: 1.75". Collector Outlet Diameter: 2.5". Emissions: CARB compliant. Header Material: Stainless Steel. Header Style:...
      $621.89 - $800.94
    • (0 reviews)
      # 399666129
      GMC Sierra 8.1L with Chevy Big Block Engine 2003, Lakester Steel Weld-Up Exhaust Kit by Patriot Exhaust®. Primary Tubing Diameter: 1.875". Emissions: Racing Only. Material: Steel. This superior Patriot EXhaust product is just for you....
      $246.37 - $270.62
    • (0 reviews)
      # 378630084
      GMC Sierra 2500 HD / 3500 2003, Long Tube Exhaust Headers by Patriot Exhaust®. Collector Outlet Diameter: 3". Header Style: Long Tube. This superior Patriot EXhaust product is just for you. Carefully designed for maximum performance, is...
      $315.49 - $679.49
    • (0 reviews)
      # 378630024
      GMC Sierra 4.8L / 5.3L / 6.0L 2003, Roadster Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3.5". This superior Patriot EXhaust product is just for you. Carefully designed for maximum...
      $266.11 - $556.88
    • (0 reviews)
      # 378630020
      GMC Sierra 4.8L / 5.3L / 6.0L 2003, Street Rod Sprint Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3.5". Emissions: EPA compliant. This superior Patriot EXhaust product is just for...
      $254.08 - $512.24
    • (0 reviews)
      # 409314862
      GMC Sierra 1500 4.8L / 5.3L Gas 2003, Mild Steel Long Tube Exhaust Headers by PaceSetter®. Collector Outlet Diameter: 3". Emissions: EPA compliant. Header Style: Long Tube. Manufactured using mandrel-bent, 16-gauge mild steel tubing and...
      $298.44 - $460.00
    • (0 reviews)
      # 409386831
      GMC Sierra 1500 4.8L / 5.3L 2003, Mild Steel Short Tube Exhaust Headers by PaceSetter®. Primary Tubing Diameter: 1.5". Collector Outlet Diameter: 2.5". Emissions: CARB compliant. Header Style: Short Tube. Flanged Collector. Manufactured...
      $251.71 - $376.73
    • (0 reviews)
      # mpn469957424
      GMC Sierra 2500 HD 6.6L 2003, Exhaust Manifold by Merchant Automotive®. Position: Driver Side. This superior Merchant Automotive product is just for you. Carefully designed for maximum performance, is will more than just meet your needs...
      $268.46
    • (0 reviews)
      # mpn469956957
      GMC Sierra 2500 HD 6.6L 2003, MAX Flow Manifold Upgrade Kit by Merchant Automotive®. Position: Driver Side. Replace your factory manifold with this low cost alternative. Increases exhaust flow through the left side manifold and gets rid...
      $169.67
    • (0 reviews)
      # mpn3513651627
      GMC Sierra 4.8L / 5.3L 2003, Steel Long Tube 4-2-1 Tri-Y Exhaust Header Kit with Y-Pipes by Doug Thorley Headers®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.5". Emissions: CARB compliant. Header Style: Long Tube....
      $729.00
    • (0 reviews)
      # 308602094
      GMC Sierra 4.8L / 5.3L / 6.0L 2003, Steel Short Tube Exhaust Headers by Doug Thorley Headers®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.5". Emissions: CARB compliant. Header Style: Short Tube. These shortie headers...
      $489.00 - $519.00
    • (0 reviews)
      # mpn3754521211
      GMC Sierra 6.6L 2003, Performance Exhaust Manifold by High Tech Turbo®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability....
      Will help boost the performance of your vehicleMade to guarantee exceptional reliability
      $356.22
    • (0 reviews)
      # 564695743
      GMC Sierra 2003, 304 SS Mill Collector Flange by Stainless Works®. Finish: Mill. Material: 304 SS. This superior product is made from high-grade stainless steel to ensure excellent quality and maximum resistance to corrosion. Engineered...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $43.70
    • (0 reviews)
      # mpn358582413
      GMC Sierra 4.8L / 5.3L / 6.0L 2003, Aluminum Header Flange Kit by Moroso®. Material: Aluminum. With this quality part backed by a great price, you can enjoy your vehicle so much more than you thought was possible. This Moroso part is...
      High quality at an affordable priceExpertly made from premium materials
      $115.02
    • (0 reviews)
      # 83880601
      GMC Sierra 6.6L 2003, 4-Bolt Plate Adapter by Diamond Eye®. This products is created for those who are not afraid of the power. It is fine-tuned to deliver unrestricted power and tested against competition for maximum performance. The...
      High quality at an affordable priceExpertly made from premium materials
      $35.84 - $48.66
    • (0 reviews)
      # mpn1593890827
      GMC Sierra 4.3L 2003, VMAX Manifold Spacer by Taylor Cable®. This products is an OEM and Performance company that was built on its founding heritage supported by a tradition of Legendary Quality. Designed utilizing the latest...
      Cutting Edge TechnologyDelivers Dramatic Performance For Late Model Stock Engines
      $288.90
    • (0 reviews)
      # mpn358507470
      GMC Sierra 4.8L / 6.0L Gas 2003, Multi-Layer Steel Exhaust Header Gasket by Cometic Gasket®. Material: Multi-Layer Steel. Exhaust Gaskets are designed for extreme cylinder pressures. MLS Exhaust Manifold Gaskets maintain a torque set...
      Made of High Quality MaterialsBuilt to Last
      $31.61
    • (0 reviews)
      # mpn4498826903
      GMC Sierra 1500 4.3L 2003, Exhaust Header Gaskets by JBA®. JBA is proud to offer accessories to aid in the fitment of your JBA exhaust product. This product is made of high-quality materials to serve you for years to come. Designed...
      JBA's premium header flange gaskets are made extra thick from a specially made formulated gasket materialTheir gaskets are rated up to 1100 F
      $42.89
    • (0 reviews)
      # 1022191078
      GMC Sierra 4.8L / 5.3L / 6.0L 2003, Graph-Flex™ Exhaust Collector Gasket by Percy's High Performance®. Collector Outlet Diameter: 2.625". Seal your collector flanges properly with gaskets from Persy's High Performance. These metal...
      Metal gaskets seal even imperfect flangesReusable
      $14.61
    • (0 reviews)
      # mpn4483467717
      GMC Sierra 4.3L 2003, Graph-Flex™ Exhaust Header Gaskets by Percy's High Performance®. These durable header flange gaskets are composed of a graphite composition material on a malleable stainless steel core. They’ll seal up tight on...
      Malleable stainless steel metal coreWill survive 2000°F exhaust temperatures for extended periods
      $23.97
    • (0 reviews)
      # 652586865
      GMC Sierra 2003, HTR Collector Gaskets by Percy's High Performance®. This products is an OEM and Performance company that was built on its founding heritage supported by a tradition of Legendary Quality. Designed utilizing the latest...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $14.16 - $18.77
    • (0 reviews)
      # 710592570
      GMC Sierra 2003, Seal-4-Good™ Exhaust Header Gaskets by Percy's High Performance®. These extreme high-temperature gaskets are well-suited for highly-modified engines: turbocharged, supercharged, nitrous or fuel. This is a premium,...
      Malleable stainless steel metal coreWill survive 2000°F exhaust temperatures for extended periods
      $33.24 - $35.11
    • (0 reviews)
      # 1022646038
      GMC Sierra 4.8L / 5.3L / 6.0L 2003, XX Carbon™ Exhaust Collector Gasket by Percy's High Performance®. Collector Outlet Diameter: 2.625". Persy's High Performance makes exhaust manifold and collector gaskets that will withstand the...
      Modified engines have hotter exhaustBetter materials help seal poorly-mating flanges better.
      $13.26
    • (0 reviews)
      # 346372310
      GMC Sierra 2003, XX Carbon™ Exhaust Header Gaskets by Percy's High Performance®. These extreme high-temperature gaskets are well-suited for highly-modified engines: turbocharged, supercharged, nitrous or fuel. This is a premium,...
      Malleable stainless steel metal coreWill survive 2000°F exhaust temperatures for extended periods
      $21.75 - $21.77
    • (0 reviews)
      # 262494833
      GMC Sierra 4.8L / 5.3L / 6.0L 2003, Exhaust Header Gasket by Remflex®. Remflex's unique flexible graphite material has been proven for more than 30 years in industrial applications, where temperatures routinely exceed 2,000 degrees -...
      Designed to crush 50%.This allows them to fill gaps in the flange surface up to 1/16"3,000 degrees F - far exceeding that of any vehicle's exhaust system temperature
      $28.79
    • (0 reviews)
      # mpn469957889
      GMC Sierra 2500 HD 6.6L 2003, Exhaust Manifold Gasket by Merchant Automotive®.
      High quality at an affordable priceExpertly made from premium materials
      $46.85
    • (0 reviews)
      # 231283074
      GMC Sierra 4.8L / 5.3L / 6.0L 2003, Header Bolt Set by Mr. Gasket®. Whatever exhaust system you install on your engine, whether it’s a set of chromed headers or simply a set of cleaned up flat black rams horn manifolds, you’ll need...
      Gaskets for every application, from mild to wildAluminum, copper or steel gaskets
      $8.39 - $37.79
    • (0 reviews)
      # 213370561
      GMC Sierra 2003, Vibe-Lock Header Bolt Kit by Percy's High Performance®. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and attention to detail, this...
      Built to match your exact requirementsHigh quality you can rely on
      $13.77 - $105.69
    • (0 reviews)
      # 623000689
      GMC Sierra 2003, Header Locking Bolt Kit by Stage 8®. Stage 8 locking fastener solutions are fail-safe when used and installed as directed. They are removable and reusable and can be visually inspected; if the locking retainer and clip...
      High quality at an affordable priceExpertly made from premium materials
      $20.00 - $69.06
    • (0 reviews)
      # mpn469957140
      GMC Sierra 2500 HD 6.6L 2003, ARP Exhaust Manifold Up Pipe Bolts by Merchant Automotive®.
      $15.99
    • (0 reviews)
      # 231109768
      GMC Sierra 2003, Cast Iron Natural Exhaust Manifold by Dorman®. Emissions: CARB compliant. Finish: Natural. Color: Natural. Header Coating: Uncoated. This product is made of high-quality materials to serve you for years to come....
      High Quality tubular construction protects against warping and/or crackingLeak-resistant for long-lasting performance
      $60.95 - $363.95
    • (5 reviews)
      # 62538111
      GMC Sierra 4.8L / 5.3L / 6.0L 2003, Exhaust Manifold to Cylinder Head Repair Clamp by Dorman®. Easily repair exhaust leaks without removing broken manifold bolts with Dorman’s Exhaust Manifold to Cylinder Head Repair Clamp. This...
      Eliminates the need to remove cylinder head, saving you time and moneyReduces installation time
      $29.95 - $33.95
    • (0 reviews)
      # mpn1395974509
      GMC Sierra 6.6L 2003, Stainless Steel Silver Metal V-Band Exhaust Manifold Clamp by Dorman®. Finish: Silver Metal. Material: Stainless Steel. Easily repair exhaust leaks without removing broken manifold bolts with Dorman’s Exhaust...
      Direct replacement for a proper fit every timeReplacement restores drivability and proper engine performance
      $42.95
    • (0 reviews)
      # mpn4476219268
      GMC Sierra 6.6L 2003, GM Original Equipment™ Exhaust Manifold Flange Gasket by ACDelco®. Position: Rear. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $9.40
    • (0 reviews)
      # 513246464
      GMC Sierra 2003, GM Original Equipment™ Exhaust Manifold Gasket by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $9.36 - $28.31
    • (0 reviews)
      # 95031073
      GMC Sierra 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 quickly and easily. Choose Bosal, and you'll get...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $4.65 - $6.42
    • (0 reviews)
      # 623467694
      GMC Sierra 4.3L / 4.8L / 5.3L / 6.0L / 8.1L 2003, Exhaust Manifold Flange Gasket by Victor Reinz®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
      High quality at an affordable priceExpertly made from premium materials
      $5.98 - $6.47
    • (1 review)
      # 90708977
      GMC Sierra 2003, Exhaust Manifold Gasket Set by Victor Reinz®. 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. It will meet your needs...
      High quality at an affordable priceExpertly made from premium materials
      $9.82 - $23.09
    • (0 reviews)
      # 24142725
      GMC Sierra 2003, Exhaust Seal Ring by Victor Reinz®. 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. It will meet your needs and...
      High quality at an affordable priceExpertly made from premium materials
      $3.83 - $5.14
    • (1 review)
      # mpn260011023
      GMC Sierra 4.3L / 4.8L / 5.3L / 6.0L / 8.1L 2003, Exhaust Manifold Flange Gasket by Mahle®. Position: Driver Side. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology...
      High quality at an affordable priceExpertly made from premium materials
      $5.64
    • (1 review)
      # mpn260011023
      GMC Sierra 4.3L / 4.8L / 5.3L / 6.0L / 8.1L 2003, Exhaust Manifold Flange Gasket by Mahle®. Position: Driver Side. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology...
      High quality at an affordable priceExpertly made from premium materials
      $5.64
    • (0 reviews)
      # mpn2281166945
      GMC Sierra 4.8L / 5.3L / 6.0L 2003, Exhaust Manifold Gasket by Mahle®. 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. It will meet...
      High quality at an affordable priceExpertly made from premium materials
      $15.25




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    2003 GMC Sierra Performance Headers Reviews

    Average rating:  5  5 - 1 review
    5 of 5
    Exhaust Manifold
    Worked great! Very happy with products and seller. Will be getting more from this seller again.
    RPosted by Rj (Interlochen, MI) / July 20, 2017
    2001 GMC Sierra
    Was this review helpful for you? Yes

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