2003 GMC Sierra Mufflers & Resonators
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Walker®SoundFX™ Steel Oval Direct-Fit Aluminized Exhaust MufflerGMC Sierra 2003, SoundFX™ Steel Oval Direct-Fit Aluminized Exhaust Muffler by Walker®. Optional. Muffler Inlet Diameter: 2.75". Muffler Outlet Diameter: 2.75". Muffler Body Length: 24". Muffler Overall Length: 29". Muffler...Designed to deliver ultimate performance and pleasing sound qualityOE-equivalent direct-fit design$47.52 - $54.06 - Walker®Quiet-Flow™ Exhaust MufflerGMC Sierra 2003, Quiet-Flow™ Exhaust Muffler by Walker®. Together with delivering OE-style sound, the Quiet-Flow Muffler features steel construction that resists rust. This part is a perfect decision if you are looking for proper...Designed for OE equivalent sound and precision fitSpun-locked heads for a proper resistance to backfire$92.67 - $196.08
- AP Exhaust®MSL Maximum Aluminized Steel Oval Direct-Fit Exhaust MufflerGMC Sierra 2003, MSL Maximum Aluminized Steel Oval Direct-Fit Exhaust Muffler 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...Designed for a quiet ride100% aluminized components for longer life$46.99 - $106.80
- AERO Exhaust®AR Series 304 Stainless Steel Round Performance Exhaust ResonatorGMC Sierra 4.8L / 5.3L 2003, AR Series 304 Stainless Steel Round Performance Exhaust Resonator by AERO Exhaust®. Resonator Inlet Diameter: 3". Resonator Outlet Diameter: 3". Resonator Body Length: 10". Resonator Overall Length: 14"....$105.99
- 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
- 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
- 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
- AP Exhaust®DGM Style Natural Exhaust ClampGMC Sierra 2003, DGM Style Natural Exhaust Clamp 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...Made from first-rate materialsEnsures outstanding durability$1.80 - $2.96
- AP Exhaust®Extra Heavy Duty Welded Saddle Natural Exhaust ClampGMC Sierra 2003, Extra Heavy Duty Welded Saddle Natural Exhaust Clamp 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...Made from first-rate materialsEnsures outstanding durability$3.79 - $4.15
- 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
- AERO Exhaust®Turbine XL Series Round Performance Exhaust Muffler with Integrated ResonatorGMC Sierra 2003, Turbine XL Series Round Performance Exhaust Muffler with Integrated Resonator by AERO Exhaust®. Muffler Body Length: 20". Muffler Overall Length: 26". Muffler Sound: Moderate. Muffler Configuration: Center - Center. The...$169.99 - $173.99
- Walker®Heavy Duty Steel Round Truck Aluminized Exhaust MufflerGMC Sierra 6.6L 2003, Heavy Duty Steel Round Truck Aluminized Exhaust Muffler by Walker®. Muffler Inlet Diameter: 4". Muffler Outlet Diameter: 4". Muffler Body Length: 15". Muffler Overall Length: 22". Muffler Configuration: Center -...Makes installation quick and easyOptimal OE-style fit and quality$113.58
- AP Exhaust®Challenge Series Aluminized Steel Oval Exhaust Muffler with Inlet/Outlet NeckGMC Sierra 2003, Challenge Series Aluminized Steel Oval Exhaust Muffler with Inlet/Outlet Neck by AP Exhaust®. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is...Limited Lifetime Warranty backed by AP Exhaust Products100% aluminized components$97.42 - $197.33
- Flo-Pro®Aluminized Steel Oval Gray Exhaust MufflerGMC Sierra 1500 HD / 2500 2003, Aluminized Steel Oval Gray Exhaust Muffler by Flo-Pro®. Muffler Inlet Diameter: 3". Muffler Outlet Diameter: 2.5". Muffler Body Length: 24". Muffler Overall Length: 30". Muffler Configuration: Dual -...High quality at an affordable priceExpertly made from premium materials$161.31
- 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...$83.11 - $171.84
- DIY Solutions®Exhaust Muffler HangerGMC Sierra With 2 Hole Design 2003, Exhaust Muffler Hanger by DIY Solutions®. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what you should definitely look out...Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again$41.77 - $132.55
- 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
- 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"....$276.95
- 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...$245.95 - $276.95
- 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 /...$133.95 - $153.95
- 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"....$184.95 - $204.95
- 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$49.30 - $189.93
- 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
- DIY Solutions®Exhaust Muffler HangerGMC Sierra 2003, Exhaust Muffler Hanger by DIY Solutions®. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what you should definitely look out for. When it comes...Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again$41.77 - $132.55
- Fel-Pro®Exhaust Pipe Connector GasketGMC Sierra 6.6L 2003, Exhaust Pipe Connector 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 fitEnsures reliable sealing performance$12.18 - $16.51
- Mahle®Exhaust Pipe Connector GasketGMC Sierra 6.6L 2003, Exhaust Pipe Connector 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 your needs...High quality at an affordable priceExpertly made from premium materials$12.14
- AP Exhaust®Xlerator Performance Exhaust Muffler with Inlet/Outlet NeckUniversal Xlerator Performance Exhaust Muffler with Inlet/Outlet Neck 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...Deep performance soundIncreased exhaust flow$25.34 - $62.13
- Gibson®MWA™ Stainless Steel Oval Gray Exhaust MufflerUniversal MWA™ Stainless Steel Oval Gray Exhaust Muffler by Gibson®. Muffler Body Length: 14". Muffler Overall Length: 20". Muffler Sound: Aggressive / Loud. Get optimum usable power and a powerful aggressive sound with a Gibson MWA...$105.43 - $139.24
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2003 GMC Sierra Mufflers Reviews
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SLP® - Loud Mouth™ Stainless Steel Round Bullet-Type Silver Exhaust Resonator (2.5" Center ID, 2.5" Center OD, 14" Length)Posted by Robert (Monroe, WI) / November 20, 20222000 Dodge Dakota
2003 GMC Sierra Models
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