2003 GMC Sierra Exhaust Systems
Select Your Submodel
-
MagnaFlow®OBDII Universal Fit Oval Body Catalytic ConverterGMC Sierra 2003, OBDII Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor Port. OEM Spec. If your car needs a new catalytic converter,...$390.00 - $582.00 - MagnaFlow®OEM Grade Universal Fit Catalytic ConverterGMC Sierra 2003, OEM Grade Catalytic Converter by MagnaFlow®. Converter Configuration: Universal Fit. Without Air Tube. Without O2 Sensor Port. If your car needs a new catalytic converter, install one that will get you through the smog...$194.00 - $231.00
- Walker®CalCat™ Universal Fit Catalytic ConverterGMC Sierra 2003, CalCat™ Catalytic Converter by Walker®. Converter Configuration: Universal Fit. Without Air Tube. Without O2 Sensor Port. Specifically designed to comply with the California Air Resources Board (CARB) Regulations....$336.39 - $1,033.29
- Gibson®Extreme Dual™ Cat-Back Exhaust System with Split Side ExitGMC Sierra 2003, Extreme Dual™ Cat-Back Exhaust System with Split Side Exit by Gibson®. Exhaust System Type: Cat-Back. Main Tubing Diameter: 2.5". Exhaust System Sound: Aggressive / Loud. When you're ready to take your truck to the...$650.18 - $958.26Save: 15%$552.65 - $814.52
- AERO Exhaust®Turbine Series Round Performance Exhaust MufflerGMC Sierra 2003, Turbine Series Round Performance Exhaust Muffler by AERO Exhaust®. Muffler Body Length: 14". Muffler Overall Length: 20". Muffler Sound: Aggressive / Loud. Muffler Configuration: Center - Center. The AERO Exhaust...$149.99 - $153.99
- CGS®Cat-Back Exhaust System with Single Side ExitGMC Sierra with Short Bed 2003, Cat-Back Exhaust System with Single Side Exit by CGS®. Exhaust System Type: Cat-Back. Main Tubing Diameter: 3". Exhaust System Sound: Mild / Stock. Get more power, improved performance, increased mileage...$389.99 - $669.99
- MBRP®Performance Series™ Aluminized Steel Cat-Back Exhaust System with Single Side ExitGMC Sierra 2003, Performance Series™ Aluminized Steel Cat-Back Exhaust System with Single Side Exit by MBRP®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Aluminized Steel. Exhaust System Sound: Moderate. Get more out of...$344.99 - $419.99
- Flowmaster®Force II™ Aluminized Steel Cat-Back Exhaust System with Single Side ExitGMC Sierra 2003, Force II™ Aluminized Steel Cat-Back Exhaust System with Single Side Exit by Flowmaster®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Aluminized Steel. Main Tubing Diameter: 3". Exhaust System Sound: Mild /...$486.95 - $696.95
- Dorman®Exhaust ManifoldGMC Sierra 2003, Exhaust Manifold by Dorman®. This exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the original manifold on specified vehicles. It includes all necessary gaskets and...Ideal replacement - this exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the stock manifold on specified vehiclesReliable construction - durable materials resist warping, cracking and leaking for long-lasting performance$74.82 - $466.73
- MagnaFlow®Direct Fit Catalytic ConverterGMC Sierra with LEV Standard / with LEV1 Standard 2003, Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 2.5". Catalytic Outlet...$2,201.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic ConverterGMC Sierra 2003, Heavy Metal Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. Without Air Tube. If your car needs replacement, install one that will get you through the smog check. This converter will directly...$511.00 - $1,176.00
- MagnaFlow®OBDII Direct Fit Catalytic ConverterGMC Sierra 2003, OBDII Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. If your car needs replacement, install one that will get you through the smog check. This converter will directly replace the factory unit,...$1,035.00 - $3,236.00
- BBK®Tuned Length Steel Short Tube Exhaust HeadersGMC Sierra 2003, Tuned Length Steel Short Tube Exhaust Headers by BBK®. Primary Tubing Diameter: 1.75". Header Style: Short Tube. Gain 12-15 dyno-proven horsepower at the rear wheels just by bolting on a set of BBK long tube, full...Developed using CAD (Computer Aided Design) softwareCNC mandrel bent tubes to ensure consistent diameter throughout the tubes$499.99 - $549.99
- Dorman®Exhaust Manifold Hardware KitGMC Sierra 2003, Exhaust Manifold Hardware Kit by Dorman®. Dorman manifold bolt and spring kits are just what you need to secure the front flange. Dorman offers products like fasteners and solutions to keep your vehicle running its best.Direct replacement for a proper fitBuilt to Last$9.06 - $46.86
- aFe®Mach Force XP™ 409 SS Cat-Back Exhaust System with Single Side ExitGMC Sierra 2003, Mach Force XP™ 409 SS Cat-Back Exhaust System with Single Side Exit by aFe®. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 409 SS. Exhaust System Sound: Aggressive / Loud. Get increased exhaust flow, more...$785.00 - $865.00Save: 10%$706.50 - $778.50
- Walker®Ultra™ Direct Fit Catalytic ConverterGMC Sierra 2500 HD 6.0L / 8.1L 2003, Ultra™ Catalytic Converter by Walker®. Converter Configuration: Direct Fit. Position: Passenger Side. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust Walker, an...$606.16 - $680.20
- AERO Exhaust®TR Series 304 Stainless Steel Round Performance Exhaust ResonatorGMC Sierra 4.8L / 5.3L 2003, TR Series 304 Stainless Steel Round Performance Exhaust Resonator by AERO Exhaust®. Resonator Inlet Diameter: 3". Resonator Outlet Diameter: 3". Resonator Sound: Moderate. Resonator Configuration: Center -...$92.99 - $136.99
- MagnaFlow®OEM Grade Direct Fit Catalytic ConverterGMC Sierra 2003, OEM Grade Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. If your car needs replacement, install one that will get you through the smog check. This converter is part of the exhaust...$336.00 - $1,470.00
- aFe®Large Bore HD™ 409 SS Cat-Back Exhaust System with Single Side ExitGMC Sierra 2500 HD / 3500 Regular Cab / Extended Cab / Crew Cab 6.6L 2003, Large Bore HD™ 409 SS Cat-Back Exhaust System with Single Side Exit by aFe®. With Tailpipe. Exhaust System Type: Cat-Back. Exhaust Tubing Material: 409 SS....$645.00Save: 10%$580.50
- iD Select®ECO II Universal Fit Oval Body Catalytic ConverterGMC Sierra 4.3L / 4.8L / 5.3L 2003, ECO II Catalytic Converter by iD Select®. Converter Configuration: Universal Fit. Location: Undercar. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet...$124.41Save: 10%$111.97
- Davico®Exhaust Manifold with Integrated Catalytic ConverterGMC Sierra 153.0" Wheelbase 6.6L 2003, Exhaust Manifold with Integrated Catalytic Converter by Davico®. This product by Davico will be a great solution to replace your failed or damaged catalytic converter. Once your stock cat fails to...Helps your vehicle emit harmless gasesDirect OEM replacement$447.35
- Borla®Touring™ Stainless Steel Cat-Back Exhaust System with Split Rear ExitGMC Sierra 78.0" Bed 2003, Touring™ Stainless Steel Cat-Back Exhaust System with Split Rear Exit by Borla®. The product is un-polished. Tip style may vary. Exhaust System Type: Cat-Back. Exhaust Tubing Material: Stainless Steel. Main...$1,440.99
- Torxe™Direct Fit Catalytic ConverterGMC Sierra 1500 2003, Catalytic Converter by Torxe™. Converter Configuration: Direct Fit. Direct Fit Catalytic converter by Torxe. Replace your clogged, corroded, and malfunctioning catalytic converter for the best possible price with...$310.50
- AP Exhaust®Universal Fit Catalytic ConverterGMC Sierra 2003, Catalytic Converter by AP Exhaust®. Converter Configuration: Universal Fit. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is that a product demand...$206.52 - $699.54
- AP Exhaust®Replacement Exhaust KitGMC Sierra 2003, Replacement Exhaust Kit by AP Exhaust®. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is that a product demand is not based on vehicle age or use...Superior replacement for your worn out exhaust partHelps put your vehicle back to its tip-top shape$39.07 - $1,479.48
- BRExhaust®Complete Exhaust KitGMC Sierra 2003, Complete Exhaust Kit by BRExhaust®. Bolt-on installation. May require basic automotive knowledge for proper installation and professional installation is always recommended. Get confidence with this high-standard OE...Superior replacement for your worn out exhaust partHelps put your vehicle back to its tip-top shape$291.00 - $344.00
- iD Select®ECO II Direct Fit Catalytic Converter and Pipe AssemblyGMC Sierra 2003, ECO II Catalytic Converter and Pipe Assembly by iD Select®. Converter Configuration: Direct Fit. Location: Undercar. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select....$446.07 - $782.95Save: 10%$401.46 - $704.66
- CATCO®Direct Fit Catalytic ConverterGMC Sierra with Federal Emission 2003, Catalytic Converter by CATCO®. Converter Configuration: Direct Fit. Position: Passenger Side. With 1 O2 Sensor Port. Designed and manufactured with innovative fabrication methods, high-tech...$631.75 - $713.53
- Davico®Center Exhaust MufflerGMC Sierra 5.3L 2003, Center Exhaust Muffler by Davico®. Muffler Overall Length: 29". 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....High quality at an affordable priceExpertly made from premium materials$63.71
- TRQ®Exhaust Manifold KitGMC Sierra 2003, Exhaust Manifold Kit by TRQ®. Designed to fit and function exactly as the part it is replacing, this top-grade TRQ exhaust manifold kit will keep your vehicle in its best condition. Made using superior components, it...Intended to bring your vehicle back to its original gloryBudget-friendly alternative to the OEM part$102.95 - $169.95Save: 5%$97.80 - $161.45
Popular Products
- $134.78 - $143.25
- $44.95 - $54.95
2003 GMC Sierra Exhaust Reviews
2 reviews
Read the Fine Print
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
2003 GMC Sierra Models
Popular Searches