2003 GMC Sierra Exhaust Systems
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CATCO®Select Plus Tech Series OBDII Universal Fit Round Body Catalytic ConverterGMC Sierra 4.3L / 4.8L / 5.3L with California Emission / Federal Emission, Dual Converters 2003, Select Plus Tech Series OBDII Catalytic Converter by CATCO®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round....$644.78 - Flowmaster®Direct Fit Catalytic ConverterGMC Sierra 1500 4.3L / 4.8L / 5.3L 2003, Catalytic Converter by Flowmaster®. Converter Configuration: Direct Fit. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 3"....$784.95
- Eastern Catalytic®ECO II Direct Fit Y-Pipe Catalytic Converter AssemblyGMC Sierra 2003, ECO II Y-Pipe Catalytic Converter Assembly by Eastern Catalytic®. Converter Configuration: Direct Fit. Location: Undercar. If you need to replace your failed or damaged catalytic converter, this product is the right...$475.76 - $638.33
- Eastern Catalytic®ECO II Universal Fit Oval Body Catalytic ConverterGMC Sierra 4.3L / 4.8L / 5.3L 2003, ECO II Catalytic Converter by Eastern Catalytic®. Converter Configuration: Universal Fit. Location: Undercar. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor Port. Catalytic...$157.06
- Eastern Catalytic®Standard Universal Fit Large Oval Body Catalytic ConverterGMC Sierra 2003, Standard Catalytic Converter by Eastern Catalytic®. Converter Configuration: Universal Fit. Location: Undercar. Catalytic Converter Body Shape: Large Oval. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet...$256.60
- AP Exhaust®Xlerator Performance Oval Gray Exhaust MufflerGMC Sierra 2003, Xlerator Performance Oval Gray Exhaust Muffler by AP Exhaust®. Muffler Inlet Diameter: 3". Muffler Sound: Moderate. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature...$48.54 - $123.51
- Davico®Exhaust Muffler AssemblyGMC Sierra 2500 HD 6.0L / 8.1L 2003, Exhaust Muffler Assembly by Davico®. 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$84.14
- Flowmaster®50 Series Big Block™ Aluminized Steel Oval Black Exhaust MufflerGMC Sierra 2003, 50 Series Big Block™ Aluminized Steel Oval Black Exhaust Muffler by Flowmaster®. Without Hangers. Muffler Inlet Diameter: 3". Muffler Outlet Diameter: 3.5". Muffler Body Length: 22". Muffler Overall Length: 28"....$269.95
- Flowmaster®50 Series HD Delta Flow™ Oval Black Exhaust MufflerGMC Sierra 2003, 50 Series HD Delta Flow™ Oval Black Exhaust Muffler by Flowmaster®. Muffler Inlet Diameter: 3.5". Muffler Outlet Diameter: 3.5". Muffler Body Length: 18". Muffler Sound: Moderate. Muffler Structure: Chambered. Muffler...$239.95 - $269.95
- Flowmaster®Super 40 Series Delta Flow™ Oval Black Exhaust MufflerGMC Sierra 2003, Super 40 Series Delta Flow™ Oval Black Exhaust Muffler by Flowmaster®. Muffler Inlet Diameter: 3". Muffler Outlet Diameter: 3". Muffler Body Length: 13.5". Muffler Overall Length: 19.5". Muffler Sound: Aggressive /...$129.95 - $149.95
- Flowmaster®Super 50 Series Delta Flow™ Oval Performance (SUV) Black Exhaust MufflerGMC Sierra 2003, Super 50 Series Delta Flow™ Oval Performance (SUV) Black Exhaust Muffler by Flowmaster®. Without Hangers. Muffler Inlet Diameter: 3". Muffler Outlet Diameter: 3". Muffler Body Length: 17". Muffler Overall Length: 23"....$179.95 - $199.95
- BRExhaust®Exhaust MufflerGMC Sierra 2003, Exhaust Muffler by BRExhaust®. This product is constructed by one of the leading OE suppliers to provide OE-style performance and maintain a factory-like sound. The direct-fit configuration allows for easy, bolt-on...Aluminized steel construction for maximum durabilityOne Piece interior to end cap construction to reduce flex and stand up to vehicle vibration$42.11 - $162.26
- DynoMax®Super Turbo™ Aluminized Steel Oval Gray Exhaust MufflerGMC Sierra 2003, Super Turbo™ Aluminized Steel Oval Gray Exhaust Muffler by DynoMax®. Muffler Inlet Diameter: 3". Muffler Sound: Mild / Stock. Muffler Structure: Turbo. Get improved exhaust flow and reduced back pressure for better...$88.91 - $199.05
- DynoMax®Ultra Flo™ Polished Stainless Steel Silver Exhaust MufflerGMC Sierra 2003, Ultra Flo™ Polished Stainless Steel Silver Exhaust Muffler by DynoMax®. Muffler Inlet Diameter: 3". Muffler Sound: Moderate. This muffler packs straight-through design for unrestricted exhaust flow and a dyno-proven...$106.70 - $107.82
- DynoMax®Ultra Flo™ Welded Stainless Steel Gray Exhaust MufflerGMC Sierra 2003, Ultra Flo™ Welded Stainless Steel Gray Exhaust Muffler by DynoMax®. Muffler Sound: Moderate. This muffler features straight-through design for unrestricted exhaust flow and a dyno-proven increase in power. It...$73.30 - $118.17
- Banks®Monster™ Stainless Steel Round Silver Exhaust MufflerGMC Sierra 6.6L 2003, Monster™ Stainless Steel Round Silver Exhaust Muffler by Banks®. Flows up to 201% better than stock. Muffler Inlet Diameter: 4". Muffler Outlet Diameter: 4". Muffler Body Length: 19.7". Muffler Sound: Moderate....$319.00
- Flowmaster®Scavenger Series Elite 4-1 One-Piece Style Stainless Steel Silver Ceramic Coated Short Tube Exhaust HeadersGMC Sierra 2003, Scavenger Series Elite 4-1 One-Piece Style Silver Ceramic Coated Stainless Steel Short Tube Exhaust Headers by Flowmaster®. Primary Tubing Diameter: 1.63". Collector Outlet Diameter: 2.5". Color: Silver. Header Coating:...Increases horsepower and torqueImproves engine efficiency and throttle response$849.95
- PPE®Exhaust Manifold with Up-PipesGMC Sierra 2003, Exhaust Manifold with Up-Pipes by PPE®. PPE’s High-Flow Exhaust Manifolds and Up-Pipes have a 53% greater flow over stock and are 50 State emissions legal. PPE Manifolds are made from high-quality cast iron and the Up...Thoughtfully designed to match your diesel engine needsMade to help enhance the performance of your vehicle$1,070.98 - $1,292.38
- Stainless Works®Stainless Steel Long Tube High Flow Catted Exhaust Header Assembly with Factory Connect Y-PipeGMC Sierra 4.8L / 5.3L with LS Engine 2003, Stainless Steel Long Tube High Flow Catted Exhaust Header Assembly with Factory Connect Y-Pipe by Stainless Works®. Primary Tubing Diameter: 1.75". Collector Outlet Diameter: 2.5". Color:...304 Stainless steel constructionTIG-welded$2,081.45
- Kooks®Torque™ Stainless Steel Short Tube Exhaust HeadersGMC Sierra 1500 4.8L / 5.3L / 6.0L 2003, Torque™ Stainless Steel Short Tube Exhaust Headers by Kooks®. Primary Tubing Diameter: 1.625"-1.75". Collector Outlet Diameter: 2.5". Header Style: Short Tube. This product is made of...Expertly crafted from premium materialsDesigned to match rigorous quality standards$1,639.39
- Hedman Hedders®Standard Duty Short Tube Exhaust HeadersGMC Sierra with Air Conditioning, Power Steering 2003, Standard Duty Short Tube Exhaust Headers by Hedman Hedders®. Color: Silver. Header Style: Short Tube. After more than 50 years of manufacturing headers using mild steel materials,...Made of High Quality 304 SSBuilt to Last$467.82 - $925.77
- SKP®Exhaust Manifold Hardware KitGMC Sierra 4.8L / 5.3L / 6.0L 2003, Exhaust Manifold Hardware Kit by SKP®. Put your vehicle back to its original condition with this top-notch transfer case component designed to efficiently transmit the engine power to both the front...Designed to send the engine power to both the front and rear axlesDirect-fit replacement for your overworked, out-of-shape transfer case$11.71
- BD Diesel Performance®Exhaust Manifold KitGMC 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$243.95
- JBA®Cat4ward Stainless Steel Shorty Exhaust HeadersGMC Sierra 2003, Cat4ward Stainless Steel Shorty Exhaust Headers by JBA®. Collector Outlet Diameter: 2.5". Header Material: Stainless Steel. Header Style: Short Tube. JBA shorty headers are one of the best performance upgrades available...Mandrel-bent stainless steel primary tubesPatented JBA Firecone® collector$599.95 - $799.95
- Dorman®Exhaust Flange Stud and Nut KitGMC Sierra 4.3L / 4.8L / 5.3L / 6.0L / 8.1L 2003, Exhaust Flange Stud and Nut Kit by Dorman®. Position: Front. Dorman’s Exhaust Flange Stud & Nut provides you with the proper flange stud and nut for replacing your manifold. Save time...Direct replacement for a proper fit every timeThe finest quality at a great price$10.08 - $14.95
- Walker®Exhaust Pipe Flange GasketGMC Sierra 2003, Exhaust Pipe Flange Gasket by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose...Makes installation quick and easyOptimal OE-style fit and quality$7.58 - $20.74
- Walker®Aluminized Steel Exhaust TailpipeGMC Sierra 2003, Aluminized Steel Exhaust Tailpipe by Walker®. If you want exhaust piping that delivers precise OE-style fit, appearance, and reliability, this part is your number one choice. Every pipe is vehicle-specific and is...Designed to directly replace the factory partMade with precision benders and fixture checked$43.04 - $171.99
- MBRP®Diesel Muffler Delete PipeGMC Sierra 2500 HD / 3500 6.6L 2003, Diesel Muffler Delete Pipe by MBRP®. Let it all hang out and bypass the muffler entirely on your truck. This 4” T409 stainless steel pipe fits directly into place in your exhaust system and...Swaged to slip-fit mating pipe perfectlyAttaches with muffler clamps$69.99 - $164.99
- Walker®Aluminized Steel Exhaust Front PipeGMC Sierra with Federal Emission 2003, Aluminized Steel Exhaust Front Pipe 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...Made of high quality aluminized steelCorrosion resistant$91.10 - $99.07
- Walker®Aluminized Steel Exhaust Intermediate PipeGMC Sierra 2003, Aluminized Steel Exhaust Intermediate Pipe 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....Made of high quality aluminized steelCorrosion resistant$41.97 - $61.10
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2003 GMC Sierra Exhaust Reviews
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Different Trend® - Blue Flame Series Domed Straight Cut Double-Wall Exhaust Tip (2.25" Inlet, 3.5" Outlet, 7.25" Length)Posted by Zachary (Ontario, NY) / March 09, 20212006 Dodge Charger
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