2008 Hummer H3 Performance Exhaust Systems

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    • (1 review)
      # 20209914
      Hummer H3 2008, MagnaFlow Series™ Stainless Steel Dual Cat-Back Exhaust System with Dual Split Rear Exit by MagnaFlow®. Finish: Stainless. Exhaust Pipe Material: Stainless Steel. Exit Location: Dual Split Rear. Exit...
      Made in the U.S.A.All Mandrel Bent Tubing
      $719.22 - $719.34
    • (1 review)
      # 58887477
      Hummer H3 Base / X 2008, Touring™ Stainless Steel Single Cat-Back Exhaust System with Single Split Rear Exit by Borla®. Exhaust Pipe Material: Stainless Steel. Exit Location: Single Split Rear Exit. Exit Configuration: Single....
      Mild Growl SoundHorsepower and torque increased by 7 – 10%
      $811.99
    • (1 review)
      # 3731871
      Hummer H3 2008, Extreme Dual™ Cat-Back Exhaust System by Gibson®. Exit Location: Behind Each Rear Tire. Exit Configuration: Dual. Exhaust Type: Cat-Back. Main Piping Diameter: 2.5". Muffler Outlet Diameter: 2.5". Muffler...
      Dyno tuned for each applicationLess restriction for increased exhaust flow
      $419.72 - $547.35
    • (0 reviews)
      # 3732711
      Hummer H3 2008, Split Rear™ Dual Cat-Back Exhaust System with Straight Out The Back Exit by Gibson®. Exit Location: Straight Out The Back. Exit Configuration: Dual. Exhaust Type: Cat-Back. Main Piping Diameter: 2.5". Muffler...
      Increase of 10-15 horsepower and pound feet of torqueAggressive, throaty exhaust tone
      $419.72 - $547.35
    • (0 reviews)
      # 3734726
      Hummer H3 2008, Swept Side™ Single Cat-Back Exhaust System with Straight Out The Back Exit by Gibson®. Exit Location: Straight Out The Back. Exit Configuration: Single. Exhaust Type: Cat-Back. Muffler Quantity: Single. Muffler...
      Less restriction for increased exhaust flowIncreases up to 32 horsepower and up to 60 lbs. of torque
      $348.79 - $479.63
    • (0 reviews)
      # 45867729
      Hummer H3 3.7L 2008, Sport™ 304 SS Cat-Back Exhaust System with Dual Rear Exit by Corsa®. Exhaust Inlet Connection Type: Bolt-On. Exhaust Pipe Material: 304 SS. Exit Location: Dual Rear Exit. Exhaust Type: Cat-Back. Main Piping...
      Robust and Bold Performance SoundNo Drone at Touring Speeds
      $1,148.33 - $1,247.76
    • (1 review)
      # 91022451
      Hummer H3 3.7L 4WD 2008, Cat-Back Exhaust System with Single Straight Out the Back Exit by CGS®. Exit Location: Single Straight Out the Back Exit. Exhaust Type: Cat-Back. Main Piping Diameter: 2.5". Muffler Body Height: 5.25"....
      Dyno proven gains in horsepower and torqueImproved performance
      $355.00 - $464.25
    • (0 reviews)
      # 42442344
      Hummer H3 3.7L 2008, OEM Grade Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by MagnaFlow®. Material: Stainless Steel. Converter Configuration: Direct Fit. Series: OEM Grade. If your car needs replacement,...
      Reduces harmful emissionsIncreases exhaust flow compared to original factory converter
      $784.34
    • (0 reviews)
      # 22207829
      Hummer H3 3.7L 2008, Standard Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by MagnaFlow®. Material: Stainless Steel. Converter Configuration: Direct Fit. Series: Standard. If your car needs replacement,...
      Reduces harmful emissionsIncreases exhaust flow compared to original factory converter
      $725.51
    • (0 reviews)
      # 51931460
      Hummer H3 3.7L 2008, Aluminized Steel Extension Pipe by DynoMax®. Material: Aluminized Steel. Inlet Connection Type: Pipe Connection. Inlet Diameter: 2.5". Outlet Connection Type: Pipe Connection. Outlet Diameter: 2.5". Overall...
      Designed to ensure unrestricted exhaust flowDirect fit – no modifications needed to install
      $60.76
    • (0 reviews)
      # 51931459
      Hummer H3 3.7L 2008, Stainless Steel Intermediate Pipe by DynoMax®. Material: Stainless Steel. Inlet Connection Type: 2 Bolt Welded Flange. Outlet Connection Type: Pipe Connection. Outlet Diameter: 2.5". Overall Length: 39.38"....
      Designed to ensure unrestricted exhaust flowDirect fit – no modifications needed to install
      $58.12
    • (0 reviews)
      # 231030923
      Hummer H3 2008, MLS Exhaust Header Gasket by Cometic Gasket®. Thickness: 0.030".
      Made of High Quality MaterialsBuilt to Last
      $31.61
    • (0 reviews)
      # 262499957
      Hummer H3 5.3L 2008, Exhaust Header Gasket by Remflex®. Set of 6. 1-15/16" W x 1-13/16" H Exhaust Ports. SBC Stahl 7 Bolt Pattern. Remflex's unique flexible graphite material has been proven for more than 30 years in industrial...
      Remflex exhaust gaskets come in a standard 1/8" thickness and are designed to crush 50%. This allows them to fill gaps in the flange surface up to 1/16"100% flexible graphite construction means Remflex gaskets are good for up to 3,000 degrees F - far exceeding that of any vehicle's exhaust system temperature
      $31.98
    • (0 reviews)
      # 116549260
      Hummer H3 2008, Exhaust Manifold Gasket Set by Magnum Gasket®. You'd better be ready to take the heat if you're going to seal an exhaust manifold, where temperatures can often exceed 1,000°F. You can count on Magnum to offer the...
      Made of High Quality MaterialsThe best combination of steel layers and high-temp gasket materials
      $6.76 - $13.09
    • (0 reviews)
      # 162647900
      Hummer H3 2008, O2 Sensor Wire Harness Extension Kit by BBK®. Installing Full length, long tube headers will locate the O2 sensors further away from the engine and the factory wire harness. These wire harness extensions will enable...
      Enables O2 sensors on full length, long tube headers to be connected to factory wire harnessEliminates the need to fabricate a harness or splice into the factory harness
      $49.99
    • (0 reviews)
      # 115273893
      Hummer H3 3.7L 2008, Replacement Exhaust Kit by Walker®. If you are looking for the ultimate in quality and value, then this superior replacement exhaust kit by Walker is what you need. All its components are designed with...
      Direct fit replacementIncludes all applicable flanges, hangers, and sensor fittings
      $82.85 - $339.89
    • (0 reviews)
      # 165484009
      Hummer H3 2008, Replacement Exhaust Kit by AP Exhaust®. Get confidence with this high-standard OE quality purchase which is perfect for those who want to perform a long-lasting exhaust system repair. Made from top-notch materials,...
      Superior replacement for your worn out exhaust partHelps put your vehicle back to its tip-top shape
      $99.75 - $396.04
    • (0 reviews)
      # 231021669
      Hummer H3 3.7L 2008, Cast Iron Natural Exhaust Manifold with Integrated Catalytic Converter by Dorman®. Includes: Exhaust Manifold, Gaskets and Hardware. Finish: Natural. Inlet Port Shape: Round. Material: Cast Iron. More like a...
      Includes heat-shield for protection of hoses, wiring, and other engine componentsCast iron or stainless tubular construction protects against warping and/or cracking
      $304.57
    • (0 reviews)
      # 231031733
      Hummer H3 5.3L 2008, Cast Iron Natural Exhaust Manifold by Dorman®. Includes: Exhaust Manifold, 1 Manifold Gasket and 1 Flange, 3 Studs, 3 Nuts. Finish: Natural. Inlet Port Shape: Round. Material: Cast Iron. More like a complete...
      High Quality tubular construction protects against warping and/or crackingLeak-resistant for long-lasting performance
      $129.95
    • (0 reviews)
      # 231021675
      Hummer H3 3.7L 2008, Ultra™ Ceramic Exhaust Manifold by Walker®. Carb Compliant: No. Material: Ceramic. Catalytic Converter Overall Length: 27.25". Converter Configuration: Direct Fit. Series: Ultra™. Walker offers complete...
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      $339.89
    • (1 review)
      # 36757618
      Hummer H3 2008, Exhaust Manifold with Integrated Catalytic Converter by Bosal®. Includes: Two O2 Sensor Ports. Carb Compliant: No. Converter Configuration: Direct Fit. If you’re in need of a replacement catalytic converter, you...
      Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases
      $323.75
    • (0 reviews)
      # 54546435
      Hummer H3 3654 CC 2008, ECO GM Front Manifold with Integrated Catalytic Converter by Eastern®. Includes: 1 Inlet Gasket, 1 Outlet Gasket, Outlet Hardware. Inlet A: 9 Bolt Welded. Outlet A: 3 Bolt Welded. Overall Length: 27.5". If...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $343.21
    • (0 reviews)
      # 231031734
      Hummer H3 3.7L 2008, Exhaust Manifold with Integrated Catalytic Converter by DEC®. Carb Compliant: No. Converter Configuration: Direct Fit. Pick out a catalytic converter by DEC and get your emissions back into check without...
      Direct fitMade from a heavy duty stainless steel outer shell
      $469.00
    • (0 reviews)
      # 140267871
      Hummer H3 3.7L 2008, Front Exhaust Manifold with Integrated Catalytic Converter by DEC®. Location: Front. CARB Compliant: No. Converter Configuration: Direct Fit. Pick out a catalytic converter by DEC and get your emissions back...
      Direct fitMade from a heavy duty stainless steel outer shell
      $469.00
    • (0 reviews)
      # 231031732
      Hummer H3 3.7L 2008, Catalytic Converter with Integrated Manifold by PaceSetter®. Converter Configuration: Direct Fit. If you want to get the most out of your vehicle, this PaceSetter product is second to none. Engineered with...
      Catalytic Converters are a direct replacement for original equipmentEngineered for durability and ease of installation
      $307.45
    • (0 reviews)
      # 70808887
      Hummer H3 Without Sport Appearance Package 3.7L 2008, Ultra™ Catalytic Converter by Walker®. Catalytic Series: Ultra™. Converter Configuration: Direct Fit. Converter Body Material: Stainless Steel. Catalytic Converter Substrate...
      High precious metal load and high technology washcoat for premium performanceStainless steel body and aluminized body and pipe heat shields for durability
      $180.85
    • (0 reviews)
      # 88066256
      Hummer H3 3.7L 2008, Ultra™ Catalytic Converter by Walker®. Catalytic Series: Ultra™. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter Substrate Material: Ceramic. Catalytic...
      Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
      $82.85
    • (0 reviews)
      # 54552106
      Hummer H3 2008, ECO GM Catalytic Converter by Eastern®. Catalytic Series: ECO GM. Converter Configuration: Direct Fit. Catalytic Converter Substrate Material: Ceramic. If you need to replace your failed or damaged catalytic...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $211.57 - $359.14
    • (0 reviews)
      # 131691492
      Hummer H3 5.3L 2008, Catalytic Converter by AP Exhaust®. Converter Configuration: Direct Fit. Converter Body Material: Stainless Steel. Catalytic Converter Substrate Material: Ceramic. Without Air Tube. The growing concern for the...
      Manufactured from high quality materialsDesign meet needs of OBDII equipped vehicles
      $357.24 - $396.04
    • (0 reviews)
      # 73597331
      Hummer H3 2008, GM Original Equipment™ Oxygen Sensor by ACDelco®. If your O2 sensor is not functioning properly, you are robbing yourself of performance and costing yourself money at the gas pump. Let ACDelco’s GM OE Oxygen...
      ACDelco GM OE Oxygen Sensors earn the name ACDelco by being put through a variety of tests, often under extreme and unusual conditions.Detects oxygen content in the exhaust gases.
      $55.10 - $73.62
    • (0 reviews)
      # 73597318
      Hummer H3 5.3L 2008, Professional™ Oxygen Sensor by ACDelco®. If your O2 Sensor is not functioning properly, you are robbing yourself of performance and costing yourself money at the gas pump. Let ACDelco’s Professional Oxygen...
      ACDelco Professional Oxygen Sensors earn the name ACDelco by being put through a variety of tests, often under extreme and unusual conditions.Customers can receive better gas mileage with a properly working oxygen sensor.
      $101.48
    • (0 reviews)
      # 81755007
      Hummer H3 5.3L 2008, Upstream Upstream Oxygen Sensor by Delphi®. Connector Type: Triangular-4 Blade. Wrench Size: 7/8". Overall Length: 380 mm. As one of the leading suppliers of oxygen sensor technology since 1978, Delphi planar...
      OE connectors and wire lengths within three inches of OE specificationsResists high temperatures, vibration damage and wire corrosion to protect signal accuracy, and long life
      $66.70
    • (0 reviews)
      # 44852532
      Hummer H3 5.3L 2008, Upstream Oxygen Sensor by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $65.48
    • (0 reviews)
      # 24161311
      Hummer H3 2008, Premium Oxygen Sensor by Bosch®. A worn-out oxygen sensor can cause engine performance problems and shorten the life of the catalytic converter. Tune-up your vehicle with an Oxygen Sensor from Bosch that is equally...
      Up to 15 % savings in fuel costsReduced CO2 emissions
      $46.35 - $75.96
    • (0 reviews)
      # 24161326
      Hummer H3 2008, Universal Fit Oxygen Sensor by Bosch®. Properly functioning oxygen sensors are important when it comes to your vehicle's fuel efficiency and reducing harmful exhaust emissions. That's why checking for, and possibly...
      Up to 15 % savings in fuel costsReduced CO2 emissions
      $38.92
    • (0 reviews)
      # 57009620
      Hummer H3 2008, OE Connector Oxygen Sensor by Denso®. Heated. Screw Type. 4 Wires. Denso's light duty oxygen sensor started to appear on vehicles with the development of fuel injection systems. The basic job of the sensor is to...
      Corrosion-resistant stainless steel constructionPTFE filter blocks efficiency-robbing contaminants
      $43.02 - $58.63
    • (0 reviews)
      # 22139489
      Hummer H3 2008, Oxygen Sensor by NTK®. This product is designed to improve engine efficiency and fuel mileage, while reducing emissions and extending catalyst life. The oxygen sensor is made of premium quality material and...
      Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement
      $41.05 - $65.76
    • (0 reviews)
      # 78078399
      Hummer H3 2008, Oxygen Sensor by Spectra Premium®. To ensure your vehicle has optimal performance and fuel economy while producing minimal emissions replace a defective O2 sensor with one backed by the aftermarket’s most rigorous...
      Increase vehicle fuel economy and engine performance while decreasing vehicle exhaust emissions100% performance tested to meet vehicle requirements
      $38.75 - $44.59
    • (0 reviews)
      # 44943484
      Hummer H3 2008, Oxygen Sensor Connector by Standard®. 4 Terminals Male Connector. Finish: Black. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $30.45 - $46.04
    • (0 reviews)
      # 231161479
      Hummer H3 5.3L 2008, GM Original Equipment™ Manifold Gasket by ACDelco®. 12 Months, 12,000 Miles (Parts Only) Series: GM Original Equipment™. Designed utilizing the latest technology, this product by ACDelco features premium...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $13.51
    • (0 reviews)
      # 231299792
      Hummer H3 2008, Exhaust Manifold Gasket Set 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 gaskets...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $9.10 - $13.64
    • (0 reviews)
      # 24043159
      Hummer H3 3.7L MFI 2008, Graphite/WireMesh Exhaust Seal Ring by Victor Reinz®. Material: Graphite/WireMesh. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto parts chain...
      OE quality fluids from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $10.84
    • (0 reviews)
      # 231030922
      Hummer H3 5.3L 2008, Exhaust Manifold Gasket by Mahle®.
      $21.57
    • (0 reviews)
      # 231132843
      Hummer H3 2008, Manifold Gasket Set by DNJ Engine Components®. Get this top-grade quality replacement for your worn out part from DNJ. Expertly crafted from premium materials, this product is of the finest quality to provide you...
      Designed to restore your vehicle's original performanceProvides superior sealing performance
      $8.64 - $10.92
    • (0 reviews)
      # 138487984
      Hummer H3 3.7L 2008, Donut Exhaust Gasket by Walker®. Outlet Diameter: 3.08". Thickness: 0.62". Port Dimensions: 2.54" Length x 2.54" Width. With their extensive selection of accessories and hardware for the exhaust system, Walker...
      Makes installation quick and easyOptimal OE-style fit and quality
      $14.62
    • (0 reviews)
      # 20553429
      Hummer H3 3654 CC 2008, 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 quick and easy. Choose Bosal, and you'll...
      Constructed for a hassle-free exhaust repairEnsures a precise fit
      $14.81
    • (0 reviews)
      # 19068629
      Hummer H3 2008, Exhaust Pipe Flange Gasket by Fel-Pro®. Location: Pipe to Manifold. 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...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $6.48 - $18.55
    • (1 review)
      # 140104219
      Hummer H3 5.3L 2008, Exhaust Flange Gasket by Mahle®.
      $7.75 - $9.01
    • (0 reviews)
      # 73597336
      Hummer H3 2008, GM Original Equipment™ Oxygen Sensor Connector by ACDelco®. If your O2 Sensor is not functioning properly, you are robbing yourself of performance and costing yourself money at the gas pump. Let ACDelco’s Oxygen...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $35.36 - $39.71
    • (0 reviews)
      # 31659015
      Hummer H3 2008, Front Exhaust Flange Stud and Nut Kit by Dorman®. Material: Metal. Dog Point Fastener: No. Pilot Point Fastener: No. Thread Size: #1: M10-1.5. Length: 2.44". Quantity: 6 Studs and 6 Nuts. Package Type: Card....
      Direct replacement for a proper fit every timeDurable steel construction
      $9.72
    • (0 reviews)
      # 266715024
      Universal Mild Steel Chrome Shielded Side Exhaust System by Patriot Exhaust®. Exhaust Pipe Material: Mild Steel. Main Piping Diameter: 2". Give your vehicle that custom look with our classic shielded side exhaust system. Large...
      Give your vehicle that custom look with our classic shielded side exhaust system with a show quality chrome finishLarge inlet and outlet pipes with low back pressure six-sided louvered core mufflers
      $255.92 - $294.31
    • (6 reviews)
      # 120105855
      Universal 200 Series Catalytic Converter by Flowmaster®. Catalytic Series: 200 Series. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter Body Shape: Round. Inlet-Outlet Connection...
      Exceed all federal emission standardsStainless Steel shells
      $116.53 - $204.95
    • (5 reviews)
      # 120105826
      Universal 220 Series Catalytic Converter by Flowmaster®. Catalytic Series: 220 Series. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter Body Shape: Oval. Inlet-Outlet Connection...
      Exceed all federal emission standardsStainless Steel shells
      $64.66 - $68.56
    • (5 reviews)
      # 120105830
      Universal 222 Series Catalytic Converter by Flowmaster®. Catalytic Series: 222 Series. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter Body Shape: Round. Inlet-Outlet Connection...
      Exceed all federal emission standardsStainless Steel shells
      $67.12
    • (1 review)
      # 120105834
      Universal 223 Series Catalytic Converter by Flowmaster®. Catalytic Series: 223 Series. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter Body Shape: Round. Inlet-Outlet Connection...
      Exceed all federal emission standardsStainless Steel shells
      $73.86
    • (1 review)
      # 120105838
      Universal 225 Series Catalytic Converter by Flowmaster®. Catalytic Series: 225 Series. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter Body Shape: Oval. Inlet-Outlet Connection...
      Exceed all federal emission standardsStainless Steel shells
      $68.02 - $71.98
    • (6 reviews)
      # 120105843
      Universal 240 Series Catalytic Converter by Flowmaster®. Catalytic Series: 240 Series. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter Body Shape: Oval. Inlet-Outlet Connection...
      Exceed all federal emission standardsStainless Steel shells
      $141.53 - $144.93
    • (5 reviews)
      # 120105847
      Universal 250 Series Catalytic Converter by Flowmaster®. Catalytic Series: 250 Series. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter Body Shape: Oval. Inlet-Outlet Connection...
      Exceed all federal emission standardsStainless Steel shells
      $130.99 - $147.34
    • (0 reviews)
      # mpn886220
      Universal 260 Series Catalytic Converter by Flowmaster®. Catalytic Series: 260 Series. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Catalytic Converter Body Shape: Oval. Inlet-Outlet Connection...
      Exceed all federal emission standardsStainless Steel shells
      $247.74
    • (6 reviews)
      # 120105859
      Universal 282 Series OBDII Catalytic Converter by Flowmaster®. Catalytic Series: 282 Series. Catalytic Style: OBDII. Converter Configuration: Universal Fit. Converter Body Material: Stainless Steel. Without Air Tube. The new...
      Exceed all federal emission standardsStainless Steel shells
      $102.20 - $142.92




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    Popular Products

    2008 Hummer H3 Performance Exhaust Systems Reviews

    Average rating:  5  5 - 2 reviews
    4.8 of 5
    Great Exhaust For My Hummer
    Love this exhaust makes my Hummer h3 sound great!
    GPosted by Garvey (Brampton, ON) / July 17, 2015
    2008 Hummer H3
    Was this review helpful for you? Yes
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