2003 GMC Sierra Exhausts

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    • (0 reviews)
      $733.94from $587.15 - $954.52
      GMC Sierra 6.6L 2003, MagnaFlow Series Exhaust System by MagnaFlow®, MODERATE TO AGGRESSIVE SOUND. These premium line exhaust systems for diesels without particulate filters include mandrel-bent stainless steel tubing, polished...
      # 20209432
    • (0 reviews)
      $827.11from $661.69 - $746.92
      GMC Sierra 78.0" Bed 2003, Street Series Cat-Back Exhaust System by MagnaFlow®, MODERATE SOUND. The Street Series is designed for customers seeking increased performance and better economy, combined with a powerful and well tuned...
      # 20209473
    • (1 reviews)
      $435.86from $348.69 - $376.43
      GMC Sierra Crew Cab 6.6L 2003, Off-Road Pro Series Exhaust System by MagnaFlow®, MODERATE TO AGGRESSIVE SOUND. The Off Road Pro-Series is designed for use on vehicles with highly modified suspension systems. Lifted, lowered, air...
      # 20209439
    • (0 reviews)
      $673.83from $539.06 - $878.60
      GMC Sierra 6.6L 2003, XL Series Exhaust System by MagnaFlow®, MODERATE TO AGGRESSIVE SOUND. These mid-level exhaust systems for diesels without particulate filters feature 100% stainless steel satin finish mufflers and mandrel-bent...
      # 20209426
    • (0 reviews)
      $471.08from $376.86 - $835.01
      GMC Sierra 6.6L 2003, Pro Series Exhaust System by MagnaFlow®, MODERATE TO AGGRESSIVE SOUND. These entry level performance diesel systems feature 100% stainless steel satin finish mufflers and mandrel-bent stainless steel tubing....
      # 20209463
    • (0 reviews)
      $842.18from $673.74 - $1,090.25
      GMC Sierra 6.6L 2003, Black Series Exhaust System by MagnaFlow®, MODERATE TO AGGRESSIVE SOUND. These premium line exhaust systems for diesels with particulate filters include mandrel-bent stainless steel tubing, 100% stainless...
      # 20209454
    • (0 reviews)
      $409.74from $327.79 - $736.52
      GMC Sierra Extended Cab / Crew Cab 6.6L 2003, Custom Builder Turbo-Back Exhaust System by MagnaFlow®, MODERATE TO AGGRESSIVE SOUND. Whether you're a professional custom truck builder or building your own dream in your home garage,...
      # 20209406
    • (0 reviews)
      $523.38from $418.70 - $839.42
      GMC Sierra 2003, American Thunder™ Exhaust System by Flowmaster®. American Thunder gives you the classic aggressive or moderate sound (depends on application and exhaust type) of a Flowmaster chambered exhaust, which is the...
      # 30824333
    • (0 reviews)
      $463.03from $370.42 - $699.60
      GMC Sierra 2003, Force II™ Cat-Back Exhaust System by Flowmaster®. The Force II Series is designed for a mild, or mild - moderate performance tone experience (depends on application and exhaust type), suitable for everyday street...
      # 30824660
    • (0 reviews)
      $733.74from $586.99 - $1,110.99
      GMC Sierra 78.0" Bed 2003, Stainless Steel Cat-Back Exhaust System by Borla®, AGGRESSIVE SOUND. When you want the best performing, best sounding, and highest quality exhaust system, you want Borla. Borla straight-through mufflers...
      # 50385443
    • (0 reviews)
      $1,065.11from $852.09 - $1,066.80
      GMC Sierra 2003, Sport Cat-Back Exhaust System by Corsa®, Single Side Exit. 3" Tubing. The patented Reflective Sound Cancellation (RSC) technology provides a unique combination of Robust and Bold Performance Sound on acceleration,...
      High Performance SoundDistinct Rumble at Idle
      # 1520658
    • (0 reviews)
      $1,004.06from $803.25 - $851.45
      GMC Sierra 2500 HD 6.6L 2003, Sport Polished Stainless Steel Cat-Back Diesel Exhaust System by dB®, Single Side Exit, with 5" Slash Cut Tip. The dB exhaust systems are unique in their combination of an aggressive, growling exterior...
      # 901750
    • (1 reviews)
      $798.26from $638.61 - $808.90
      GMC Sierra 2003, Sport Polished Stainless Steel Cat-Back Exhaust System by dB®, with 4" Slash Cut Polished Tip. The dB exhaust systems are unique in their combination of an aggressive, growling exterior sound and absence of...
      # 901927
    • (0 reviews)
      $427.44from $341.95 - $591.93
      GMC Sierra 2003, Swept Side™ Cat-Back Exhaust System by Gibson®, AGGRESSIVE SOUND. Behind Rear Tire Exit. Get increased horsepower and torque in the rpm range where you need it most, with this Swept Side Cat-Back Exhaust System....
      # 3734384
    • (0 reviews)
      $534.55from $427.64 - $674.04
      GMC Sierra Diesel 2003, Swept Side™ Exhaust System by Gibson®. 4" Tubing. Behind Rear Tire Exit. 4" Inlet / 5" Outlet Polished Stainless Round Slash Cut Tip. Get increased exhaust flow for more torque and horsepower with this...
      # 3729173
    • (0 reviews)
      $514.36from $411.49 - $636.20
      GMC Sierra 2003, Dual Sport™ Cat-Back Exhaust System by Gibson®, AGGRESSIVE SOUND. Behind Rear Tire Exit. 2.5" Inlet / 3.5" Outlet Polished Stainless Round Slash Cut Tip. Get increased horsepower and torque in the rpm range where...
      # 3731004
    • (0 reviews)
      $514.36from $411.49 - $636.20
      GMC Sierra 2003, Split Rear™ Cat-Back Exhaust System by Gibson®, AGGRESSIVE THROATY SOUND. Straight Out The Back Exit. 2.5" Inlet / 3.5" Outlet Polished Stainless Round Slash Cut Tip. Get increased horsepower and torque in the...
      # 3732521
    • (0 reviews)
      $514.36from $411.49 - $636.20
      GMC Sierra 2003, Extreme Dual™ Cat-Back Exhaust System by Gibson®, AGGRESSIVE SOUND. Behind Each Rear Tire Exit. 2.5" Inlet / 3.5" Outlet Polished Stainless Round Slash Cut Tip. When you’re ready to take your truck to the next...
      # 3731667
    • (0 reviews)
      $427.44from $341.95 - $381.73
      GMC Sierra 1500 2003, Super Truck™ Cat-Back Exhaust System by Gibson®. In Front of Rear Tire Exit. 6" x 2.75" Outlet Polished Stainless Oblong Slash Cut Tip. When quiet is the least of your concerns, get the Super Truck Cat-Back...
      # 3732981
    • (0 reviews)
      $643.74$514.99
      GMC Sierra 4.8L / 5.3L Extended Cab Short Bed 2003, Black Series™ Cat-Back Exhaust System by MBRP®, MODERATE SOUND. Single Side Exit. With 3.5" Tip. Murder out your vehicle with a black exhaust system. Specially coated in high...
      # 36201033
    • (0 reviews)
      $806.24from $644.99 - $819.99
      GMC Sierra 2500 HD / 3500 Duramax Crew Cab / Extended Cab 2003, Black Series™ Down Pipe-Back Diesel Off-Road Exhaust System by MBRP®, MODERATE SOUND, Single Side Exit. Black is the new chrome, they say. And it’s hard to argue...
      # 3695247
    • (0 reviews)
      $418.74from $334.99 - $489.99
      GMC Sierra Short Bed 2003, Installer Series™ Cat-Back Exhaust System by MBRP®, MODERATE SOUND. The Installer Series from MBRP brings you the best in high-quality construction: these reasonably-priced systems are manufactured on...
      # 47338734
    • (0 reviews)
      $487.49from $389.99 - $699.99
      GMC Sierra 2500 HD / 3500 Duramax Crew Cab / Extended Cab 2003, Installer Series™ Diesel Exhaust System by MBRP®, MODERATE SOUND. Built from heavy duty aluminized steel Installer Series performance exhaust systems offer a value...
      Mandrel-bent constant-diameter tubingMellow, authoritative exhaust note
      # 3695415
    • (0 reviews)
      $406.24$324.99
      GMC Sierra 2500 HD / 3500 Duramax Crew Cab / Extended Cab 2003, Performance Series™ Diesel Exhaust System by MBRP®, MODERATE SOUND, Single Side Exit. Get more out of your turbodiesel pickup with a Performance Series exhaust...
      # 3695494
    • (0 reviews)
      $893.74from $714.99 - $824.99
      GMC Sierra Short Bed 2003, Pro Series™ Cat-Back Exhaust System by MBRP®, MODERATE SOUND, and Stainless Steel Angled Rolled Edge Tips. The PRO Series exhausts from MBRP is for the no-compromise enthusiast who insists on nothing...
      # 3694470
    • (0 reviews)
      $349.99from $279.99 - $444.99
      GMC Sierra Duramax 2003, PLM Series™ Off-Road Diesel Exhaust System by MBRP®, MODERATE SOUND, without Muffler, Single Side Exit. Sometimes you just have to let it all hang out. That’s why MBRP makes race-only exhaust systems....
      # 3695589
    • (0 reviews)
      $581.24from $464.99 - $534.99
      GMC Sierra Short Bed 2003, XP Series™ Cat-Back Exhaust System by MBRP®, MODERATE SOUND. The XP series exhausts from MBRP is for the no-compromise enthusiast who insists on a rugged system that can take whatever the road throws at...
      Mellow, authoritative exhaust noteAluminized steel tubing and hangers
      # 47338778
    • (0 reviews)
      $987.49$789.99
      GMC Sierra 2500 HD / 3500 Duramax Crew Cab / Extended Cab 2003, Pro Series™ Cat-Back Diesel Exhaust System by MBRP®, MODERATE SOUND, 4" Tubing, Single Side Exit, and T-5051 Stainless Steel Angled Rolled End Tip. MBRP's Pro Series...
      Mellow, authoritative exhaust noteMirror-polished T304 stainless tips and mufflers
      # 3695918
    • (0 reviews)
      $1,068.74$854.99
      GMC Sierra 3500 Duramax Engine Extended Cab 2003, Pro Series™ Off-Road Stainless Steel Diesel Exhaust System by MBRP®, MODERATE SOUND. 4" Tubing. Single Side Exit. With Front Pipe. MBRP's Pro Series is the best performance...
      Mellow, authoritative exhaust noteMirror-polished T304 stainless tips and mufflers
      # 47335739
    • (0 reviews)
      $618.74from $494.99 - $574.99
      GMC Sierra 3500 Duramax Engine Extended Cab 2003, SLM Series™ Exhaust System by MBRP®, MODERATE SOUND. Without Muffler. MBRP’s SLM Series is the ultimate in free-flowing exhaust systems, because they replace both the catalytic...
      # 3695667
    • (0 reviews)
      $693.74from $554.99 - $674.99
      GMC Sierra 2500 HD / 3500 Duramax 2003, TD Series™ Down Pipe-Back Diesel Off-Road Exhaust System by MBRP®, MODERATE SOUND, Single Rear Turn Down Exit. Guarantee the best performance from your diesel engine by hanging a 5" TD...
      # 3695713
    • (0 reviews)
      $1,031.24$824.99
      GMC Sierra 2500 HD / 3500 Duramax 2003, Installer Series™ Down Pipe-Back Exhaust System with Dual Smokers™ Stack Kit by MBRP®, MODERATE SOUND. Give your pickup some of that big-rig flavor with a set of SMOKERS. Nothing rumbles...
      # 3695849
    • (0 reviews)
      $643.74from $514.99 - $944.99
      GMC Sierra 2500 HD / 3500 Duramax Crew Cab / Extended Cab 2003, XP Series™ Diesel Exhaust System by MBRP®, MODERATE SOUND. MBRP's XP Series is the performance exhaust of choice for the enthusiast who needs a system that can take...
      Competition onlyBoosts horsepower and torque
      # 3695194
    • (0 reviews)
      $593.74from $474.99 - $644.99
      GMC Sierra 2500 HD / 3500 Duramax 6.6L 2003, XP Series™ Down Pipe-Back Exhaust System with by MBRP®, MODERATE SOUND. Give your pickup some of that big-rig flavor with a set of SMOKERS. Nothing rumbles down the street like a set...
      # 3695797
    • (0 reviews)
      $356.24$284.99
      GMC Sierra 4.8L / 5.3L Extended Cab Short Bed 2003, Performance Series™ Cat-Back Exhaust System by MBRP®, MODERATE SOUND. Single Side Exit. Get more out of your turbodiesel pickup with a Performance Series exhaust system from...
      Authoritative exhaust noteSingle side exit behind passenger-side rear tire
      # 36201031
    • (0 reviews)
      $565.21from $452.17 - $647.87
      GMC Sierra 2003, Monster™ Exhaust System by Banks®, Single Side Exit. Improve performance and economy with a Banks Monster Exhaust system. Increased pipe size is only part of it. Banks uses constant-diameter mandrel bending to...
      # 45909146
    • (0 reviews)
      $2,246.94from $1,797.55 - $1,818.15
      GMC Sierra 1500 Gas 78.0" Bed 2003, PowerPack™ Exhaust System by Banks®. Improve performance and economy with a Banks Monster Exhaust system. Increased pipe size is only part of it. Banks uses constant-diameter mandrel bending to...
      # 46432402
    • (0 reviews)
      $3,204.44from $2,563.55 - $2,655.22
      GMC Sierra Diesel LB7 Engine 2003, Six-Gun™ Dual Exhaust System by Banks®. The Banks Power Six-Gun Bundle Dual Exhaust System is the best performance package on a budget. Six-Gun Bundle is a total engineered power system for...
      # 46432376
    • (0 reviews)
      $1,514.35from $1,211.48 - $2,655.22
      GMC Sierra 2003, Stinger™ Exhaust System by Banks®. With its engineered exhaust, intake and fuel management upgrades, economical Stinger adds impressive power, efficiency and durability—and sounds great doing it! The Banks...
      # 46432405
    • (0 reviews)
      $392.81from $314.25 - $547.50
      GMC Sierra Short Bed 2003, Cat-Back Exhaust System by CGS®. Get more power, improved performance, increased mileage and throaty sound in a bolt-on package. With the CGS Cat-Back Exhaust System you get all this and a complete...
      Dyno proven gains in horsepower and torqueImproved performance
      # 1465557
    • (0 reviews)
      $1,243.75from $995.00 - $1,045.00
      GMC Sierra Diesel 2003, Mach Force XP Dual DP-Back Exhaust System by aFe®. 4" Tubing. Get increased exhaust flow, more horsepower and torque, improved performance and lower exhaust gas temperatures with the aFe Mach Force XP...
      # 39438923
    • (0 reviews)
      $618.75from $495.00 - $749.00
      GMC Sierra 2003, Mach Force XP Exhaust System by aFe®. Get increased exhaust flow, more horsepower and torque, improved performance and lower exhaust gas temperatures with the aFe Mach Force XP Exhaust System. aFe dyno tests every...
      # 1066983
    • (0 reviews)
      $556.25from $445.00 - $495.00
      GMC Sierra 6.6L Turbocharged 2003, Large Bore HD Exhaust System by aFe®. Get increased exhaust flow, more horsepower and torque, improved performance and lower exhaust gas temperatures with the aFe Large Bore HD Exhaust System. aFe...
      # 1066770
    • (0 reviews)
      $431.25from $345.00 - $495.00
      GMC Sierra 2500 HD / 3500 HD / 3500 6.6L LB7 / LLY / LBZ 2003, ATLAS Down-Pipe Back Exhaust System by aFe®. The ATLAS Exhaust System channels the exhaust from the engine to the rear of the vehicle on a racing diesel engine truck....
      # 6860240
    • (0 reviews)
      $993.75from $795.00 - $845.00
      GMC Sierra Diesel 2003, ATLAS Dual DP-Back Exhaust System by aFe®. 4" Tubing. The ATLAS Exhaust System channels the exhaust from the engine to the rear of the vehicle on a racing diesel engine truck. It has the least amount of...
      # 39438920
    • (0 reviews)
      $1,500.00from $1,200.00 - $1,300.00
      GMC Sierra 2003, Power Series Cat-Back Exhaust System by RBP®. RBP's Cat-Back exhaust system is made of mandrel-bent stainless steel tubing. The system includes all parts of the exhaust system behind the catalytic converter. It is...
      Made in Stainless Steel for DurabilityLowers Exhaust Gas Temperature
      # 42554261
    • (0 reviews)
      $1,250.00from $1,000.00 - $1,200.00
      GMC Sierra 2003, Eliminator Series Exhaust System by RBP®. Exhaust systems for offroad trucks can sometimes be difficult to find. Many offroaders have to resort to custom built systems which are expensive and often lack the finish...
      Made in Stainless Steel for DurabilityLowers Exhaust Gas Temperature
      # 42554251
    • (0 reviews)
      $386.64from $309.31 - $327.79
      GMC Sierra 2003, Super Turbo™ Cat-Back Exhaust System by DynoMax®. Stainless Steel. Aluminized. 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
      # 18220558
    • (0 reviews)
      $389.79from $311.83 - $336.03
      GMC Sierra 2003, Ultra Flo™ Welded Cat-Back Exhaust System by DynoMax®. Stainless Steel. Bare. Band. Dyno proven to flow up to 2,00 SCFM and support up to 2,00 horsepower. This cat-back exhaust system includes pipes, clamps, tip,...
      Unrestricted, straight-through design for a dyno-proven increase in horsepower and torqueUltra Flo Welded muffler will give your car a deep performance tone
      # 18222902
    • (0 reviews)
      $538.65$430.92
      GMC Sierra Crew Cab Diesel 2003, Ultra Flo™ Welded Turbo-Back Exhaust System by DynoMax®. Stainless Steel. Bare. Single. Band. Pipe D: 4.00". OD: 5.00". Angle Exit. Turbo Back System. Dyno proven to flow up to 2,00 SCFM and...
      Unrestricted, straight-through design for a dyno-proven increase in horsepower and torqueUltra Flo Welded muffler will give your car a deep performance tone
      # 18223388
    • (0 reviews)
      $427.60$342.08
      GMC Sierra 1500 Extended Cab 2003, VT™ Cat-Back Exhaust System by DynoMax®. Stainless Steel. Bare. Single. U-Bolt. Pipe D: 3.00". OD: 3.00". Angle Exit. 90 day performance guarantee. This cat-back exhaust system includes pipes,...
      Unrestricted, straight-through design for a dyno-proven increase in horsepower and torqueExclusive DynoMax Valve Technology delivers on-demand, drone-free performance and sound
      # 18216601
    • (0 reviews)
      $297.28from $237.82 - $526.72
      GMC Sierra 2003, Exhaust System Kit by Diamond Eye Performance®. 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...
      The finest quality at a great priceOE quality parts from top original equipment and aftermarket manufacturers
      # 15960337
    • (0 reviews)
      $462.21from $369.77 - $425.49
      GMC Sierra Diesel LB7 Engine 2003, Monster™ Sport Diesel Cat-Back Exhaust System by Banks®, Single Side Exit. Includes 5" Polished Rolled-Edge Tip, Stainless Steel Muffler. Add power and rumble to your diesel with this cat-back...
      # 45909142
    • (0 reviews)
      $578.09from $462.47 - $956.87
      GMC Sierra Diesel LB7 Engine 2003, Monster™ Diesel Exhaust System by Banks®. Banks 100% stainless constant-diameter system for diesel vehicles dramatically improves exhaust flow, slashing backpressure and lowering EGTs. You'll...
      # 45909114
    • (0 reviews)
      $827.90$662.32
      GMC Sierra 2003, Scavenger Series Ceramic Coated Shorty Elite Headers by Flowmaster®, 2.5" Outlet. 1.63" Tubing. Includes Bolts and Studs. Replace your restrictive factory exhaust manifolds with these stainless steel headers and...
      # 1281814
    • (0 reviews)
      $1,177.49$941.99
      GMC Sierra 2003, Stainless Steel Header by Borla®. 304 stainless steel for long life. Connects to the factory mid-pipe. Mandrel-bent for smooth curves. Million Mile warranty.
      # 1222584
    • (0 reviews)
      $525.55from $420.44 - $579.61
      GMC Sierra 2003, Performance Header by Gibson®. Let your engine breathe and gain power and performance with Gibson Performance Headers. These headers will flow much more exhaust than your restrictive factory exhaust manifolds. The...
      # 3730106
    • (0 reviews)
      $732.59$586.07
      GMC Sierra W/O Air Injection 2003, TorqueTube™ Exhaust Manifold System by Banks®. Includes Intake, TransferTube, Air Filter, Filter Housing, Head Shield, Exhaust Manifolds, Y-Pipe, Muffler, Exhaust. Cast OEM exhaust manifolds...
      # 3145695
    • (0 reviews)
      $437.49from $349.99 - $469.99
      GMC Sierra 2003, CNC-Series™ Headers 1.75" Diameter by BBK Performance®. Gain 15-20 dyno-proven horsepower at the rear wheels just by bolting on a set of BBK long tube, full length headers. These premium headers are CAD designed...
      # 10959807
    • (0 reviews)
      $993.75$795.00
      GMC Sierra 2003, Twisted Steel Headers by aFe®. The new Twisted Steel performance header from aFe Power is redefining the header industry with the new pulse control technology. aFe engineers have designed this header using optimum...
      # 46178725



    Guides & Articles
    Regardless of whether you're shopping for a simple replacement muffler that delivers original equipment (OE) sound and performance or an upgraded muffler which provides a deeper growl with increased power through freer exhaust flow, you'll see choices between "direct fit" mufflers and "universal" mufflers. In this article, we'll help you understand the differences...
    It has been a battle of the ages to make exhaust sound like it should. Having less bends or turns will not only improve the sound but also performance. A custom exhaust is always an option for the race inspired and spirited weekend warriors. Our manufactures offer everything needed to build a custom exhaust to your preference.
    Headers are installed because the stock exhaust manifolds usually flow poorly. An exhaust header has individual tubes for each exhaust port, allowing each exhaust pulse to flow unobstructed from the cylinder head. The tubes on headers are usually larger in diameter than the runners on an exhaust manifold and the tubes are mandrel bent for gradual radius bends.
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    2003 GMC Sierra Exhausts Reviews
    Average rating:55 - 2 reviews
    5(5)
    APPEARANCE10
    EASE OF INSTALLATION10
    PRICE/VALUE10
    QUALITY10
    2003 GMC Sierra
    | Posted by | (Woodbridge, ON)

    I've been working a lot lately, so the box is still sitting in the garage. Hope, I'll have some time this weekend. The service was great. The transaction and delivery went really smooth and the system was shipped as promised. I'm definitely going to be a return customer.

    2 people found this review helpful.
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    2003 GMC Sierra Models
    • 2003 GMC Sierra 1500 Base Performance Exhaust Systems
    • 2003 GMC Sierra 1500 SL Performance Exhaust Systems
    • 2003 GMC Sierra 1500 SLE Performance Exhaust Systems
    • 2003 GMC Sierra 1500 SLT Performance Exhaust Systems
    • 2003 GMC Sierra 1500 WT Performance Exhaust Systems
    • 2003 GMC Sierra 1500 HD SLE Performance Exhaust Systems
    • 2003 GMC Sierra 1500 HD SLT Performance Exhaust Systems
    • 2003 GMC Sierra 2500 Base Performance Exhaust Systems
    • 2003 GMC Sierra 2500 SLE Performance Exhaust Systems
    • 2003 GMC Sierra 2500 SLT Performance Exhaust Systems
    • 2003 GMC Sierra 2500 WT Performance Exhaust Systems
    • 2003 GMC Sierra 2500 HD Base Performance Exhaust Systems
    • 2003 GMC Sierra 2500 HD SLE Performance Exhaust Systems
    • 2003 GMC Sierra 2500 HD SLT Performance Exhaust Systems
    • 2003 GMC Sierra 2500 HD WT Performance Exhaust Systems
    • 2003 GMC Sierra 3500 Base Performance Exhaust Systems
    • 2003 GMC Sierra 3500 SLE Performance Exhaust Systems
    • 2003 GMC Sierra 3500 SLT Performance Exhaust Systems