2008 Hummer H3 Performance Headers

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    • (1 review)
      # mpn1040720
      Hummer H3 3.7L 2008, Exhaust Manifold with Integrated Catalytic Converter by Bosal®. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to vehicle manufacturers and...
      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
      $323.21
    • (0 reviews)
      # 1257617679
      Hummer H3 3.7L 2008, Exhaust Manifold with Integrated Catalytic Converter by Davico®. Position: Front. 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
      $273.53
    • (0 reviews)
      # mpn2263350741
      Hummer H3 3.7L 2008, Exhaust Manifold with Integrated Catalytic Converter by DEC®. Position: Front. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic converters...
      Direct fitMade from a heavy duty stainless steel outer shell
      $478.38
    • (0 reviews)
      # mpn2271173
      Hummer H3 5.3L 2008, Cast Iron Exhaust Manifold by Dorman®. Position: Passenger Side. Color: Natural. Header Coating: Uncoated. This product is made of high-quality materials to serve you for years to come. Designed using...
      High Quality tubular construction protects against warping and/or crackingLeak-resistant for long-lasting performance
      $118.95
    • (0 reviews)
      # 1200346654
      Hummer H3 3.7L 2008, Cast Iron Exhaust Manifold with Integrated Catalytic Converter by Dorman®. Color: Natural. More like a complete kit than a single part, many of the Exhaust Manifolds include gaskets and hardware for a complete...
      Includes heat-shield for protection of hoses, wiring, and other engine componentsConstruction protects against warping and/or cracking
      $347.11 - $813.95
    • (0 reviews)
      # mpn4564010225
      Hummer H3 3.7L 2008, Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by PaceSetter®. Position: Front. PaceSetter Manifold Catalytic Converters are custom-engineered to deliver maximum performance and efficiency from...
      Manifold Catalytic Converters are a direct replacement for original equipmentManufactured using mandrel-bent stainless steel tubing for a low restriction tubular manifold design
      $233.15
    • (0 reviews)
      # 564859739
      Hummer H3 3.7L 2008, Ultra™ Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by Walker®. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust Walker, an industry leader, for the finest...
      Constructed to meet your vehicle’s specific emissions requirementsDesigned to meet EPA regulations
      $329.32
    • (0 reviews)
      # mpn1134541
      Hummer H3 3.7L 2008, OEM Grade Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by MagnaFlow®. Primary Tubing Diameter: 1.5". Collector Outlet Diameter: 3". Color: Silver. Header Coating: Uncoated. If your car needs...
      Reduces harmful emissionsPhysically part of the exhaust header/manifold assembly
      $823.55
    • (0 reviews)
      # mpn4564004617
      Hummer H3 5.3L 2008, Exhaust Headers by Advance Adapters®. 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 and...
      High quality at an affordable priceExpertly made from premium materials
      $241.46
    • (0 reviews)
      # 378677859
      Hummer H3 5.3L 2008, Roadster Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3.5". This superior Patriot EXhaust product is just for you. Carefully designed for maximum performance, is...
      Expertly crafted from premium materialsQuality design and workmanship
      $255.91 - $556.88
    • (0 reviews)
      # 378677855
      Hummer H3 5.3L 2008, Street Rod Sprint Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3.5". This superior Patriot EXhaust product is just for you. Carefully designed for maximum...
      Expertly crafted from premium materialsQuality design and workmanship
      $264.28 - $512.24
    • (0 reviews)
      # mpn358582413
      Hummer H3 5.3L 2008, Aluminum Header Flange Kit by Moroso®. Material: Aluminum. With this quality part backed by a great price, you can enjoy your vehicle so much more than you thought was possible. This Moroso part is specifically...
      High quality at an affordable priceExpertly made from premium materials
      $115.02
    • (1 review)
      # 513233482
      Hummer H3 2008, GM Original Equipment™ Exhaust Manifold Gasket by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $9.09 - $11.95
    • (0 reviews)
      # 1092026837
      Hummer H3 2008, Exhaust Manifold Gasket Set by Apex Auto®. Designed utilizing the latest technology, this product by Apex Auto features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it...
      Quick accurate delivery with excellent fill-rateExcellent inventory availability
      $4.04 - $5.25
    • (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 meet...
      Direct OEM replacement for a proper fitEnsures reliable sealing performance
      $6.31 - $9.16
    • (1 review)
      # mpn260011023
      Hummer H3 5.3L 2008, Exhaust Manifold Flange Gasket by Mahle®. Position: Driver Side. 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
      $5.73
    • (1 review)
      # mpn260011023
      Hummer H3 5.3L 2008, Exhaust Manifold Flange Gasket by Mahle®. Position: Driver Side. 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
      $5.73
    • (0 reviews)
      # mpn2281166945
      Hummer H3 5.3L 2008, Exhaust Manifold 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 and...
      High quality at an affordable priceExpertly made from premium materials
      $15.25
    • (0 reviews)
      # 1022347048
      Hummer H3 2008, Exhaust Pipe to Manifold 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 and...
      High quality at an affordable priceExpertly made from premium materials
      $6.16 - $10.72
    • (0 reviews)
      # 960279127
      Hummer H3 2008, Exhaust Pipe to Manifold 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 and...
      High quality at an affordable priceExpertly made from premium materials
      $6.16 - $10.72
    • (0 reviews)
      # mpn616592
      Hummer H3 MFI 3.7L 2008, Graphite/WireMesh Exhaust Seal Ring by Victor Reinz®. Material: Graphite/WireMesh. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
      High quality at an affordable priceExpertly made from premium materials
      $7.62
    • (0 reviews)
      # mpn1590776077
      Hummer H3 3.7L 2008, Multi-Layer Steel Exhaust Manifold Gasket by Victor Reinz®. Material: Multi-Layer Steel. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
      High quality at an affordable priceExpertly made from premium materials
      $6.77
    • (0 reviews)
      # mpn358507470
      Hummer H3 2008, Multi-Layer Steel Exhaust Header Gasket by Cometic Gasket®. Material: Multi-Layer Steel. Exhaust Gaskets are designed for extreme cylinder pressures. MLS Exhaust Manifold Gaskets maintain a torque set and resist...
      Made of High Quality MaterialsBuilt to Last
      $31.61
    • (0 reviews)
      # 314954025
      Hummer H3 5.3L 2008, Exhaust Manifold Hardware Kit by Stage 8®. Stage 8 manufacturers the World's Best Active Mechanical Locking systems. Stage 8 locking fastener solutions are fail-safe when used and installed as directed. They are...
      Thoughtfully designed for the highest efficiency and safetyWill provide more breakaway torque than any other locking system
      $50.99 - $62.31
    • (0 reviews)
      # 314954080
      Hummer H3 5.3L 2008, Header Locking Bolt Kit by Stage 8®. Stage 8 locking fastener solutions are fail-safe when used and installed as directed. They are removable and reusable and can be visually inspected; if the locking retainer and...
      Thoughtfully designed for the highest efficiency and safetyWill provide more breakaway torque than any other locking system
      $20.00 - $62.31
    • (0 reviews)
      # mpn4562182850
      Hummer H3 5.3L 2008, Exhaust Manifold Hardware Kit by Fel-Pro®. Set services one exhaust manifold or two exhaust manifolds. If you are looking for quality sealing solutions, Fel-Pro offers you various replacement products from seals and...
      Direct OEM replacement for a proper fitEnsures reliable sealing performance
      $16.70
    • (0 reviews)
      # 1362091141
      304 SS Short Tube Exhaust Headers by Flowtech®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.5". Header Coating: Uncoated. Header Style: Short Tube. Flowtech’s emissions-friendly headers are just the ticket for those...
      Mandrel-bent tubing for smooth exhaust flowSturdy 16 gauge tubing
      $199.95 - $219.95
    • (0 reviews)
      # 1386589400
      Block Hugger Short Tube Exhaust Headers by Flowtech®. Collector Outlet Diameter: 2.5". Header Style: Short Tube. Flowtech Headers are the perfect combination of quality and value. This tight fit block hugger header fits all popular hot...
      Tight fit block hugger design for popular hot rod and street rodsHeavy duty 16-gauge tubing for increased strength and durability
      $175.95 - $463.95
    • (0 reviews)
      # 1022111133
      Lakester™ Exhaust Headers by Flowtech®. Flowtech Headers are the perfect combination of quality and value. Flowtech is proud to announce the release of a complete line-up of Lakester headers. These headers are a throw back to the dry...
      High flow, mandrel-bent tubes provide consistent tubing diameters for smooth flow and increased exhaust velocityHeavy duty tubing and high quality welds for increased strength and durability
      $427.95 - $536.95
    • (0 reviews)
      # 781697781
      Ram Horn Exhaust Manifold by Flowtech®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.25". Flowtech exhaust manifolds are the perfect combination of quality and value. This Rams horn exhaust manifold fits all popular hot...
      Maximum engine clearance and maximum strengthSmooth transition, 1-5/8” diameter primaries are used for increased exhaust flow increasing performance and improving throttle response
      $214.95 - $320.95
    • (0 reviews)
      # mpn4564017452
      Super Competition™ Stainless Steel Short Tube Block Hugger Exhaust Headers by Hooker®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.5". Collector Length: 4". Header Style: Short Tube. All necessary hardware included...
      Designed for optimal performanceIndustry’s best welds for durability
      $812.95
    • (0 reviews)
      # 1022159046
      Exhaust Header by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with utmost care and meticulous attention to detail to...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $139.75 - $548.31
    • (0 reviews)
      # 1092289839
      304 SS Turbo Exhaust Headers by Stainless Works®. This superior product is made from high-grade stainless steel to ensure excellent quality and maximum resistance to corrosion. Engineered with careful attention to the smallest detail...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $1,035.00 - $1,466.33
    • (0 reviews)
      # 1022124075
      Mild Steel Header Flanges by Hedman Hedders®. Material: Mild Steel. Hedman Husler Hedder flanges are the same high quality, port matched flanges Hedman used to build all of their off the shelf race hedders.
      Made of High Quality MaterialsBuilt to Last
      $111.56 - $208.66
    • (0 reviews)
      # 1022499053
      Super Competition™ Flange Kit by Hooker®. Hooker offers a complete line of "hard to find" specialty header flanges. Flange kits come with gaskets, bolts and polished stainless steel NHRA contingency header I.D. tags.
      Kit Includes Stainless Steel NHRA Contingency ID Header Tag,Gaskets & BoltsExpertly crafted from premium materials
      $74.23 - $203.95
    • (0 reviews)
      # 781513773
      Exhaust Flanges by Kooks®. 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, this product by Kooks will last a lifetime. It will meet...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $13.17 - $85.49
    • (0 reviews)
      # mpn4564010455
      Super Competition™ Fiber Exhaust Header Gasket by Hooker®. Material: Fiber. Hooker's precision-matched Super Competition header gaskets provide a sure fit and unmatched exhaust sealing. This OEM quality gasket is constructed of a...
      Precision fit for improved sealingSteel core provides superior adhesion
      $13.47
    • (0 reviews)
      # mpn4498826994
      Exhaust Header Gasket by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with utmost care and meticulous attention to detail to...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $12.85
    • (0 reviews)
      # mpn1622044890
      Universal Brass Exhaust Manifold Hardware Kit by Dorman®. Material: Brass. Dorman's Exhaust Nuts are now available separately for exhaust manifold repairs. These direct replacement nuts are ideal for securing exhaust components and used...
      Direct replacement for a proper fit every timeHigh-quality steel and rubber materials provides years of trouble-free service
      $3.55
    • (0 reviews)
      # mpn4564017153
      Tri-Y Exhaust Headers by Doug Thorley Headers®. Primary Tubing Diameter: 1.75". Collector Outlet Diameter: 3"-2.5". Header Coating: Ceramic Coating. This product is made of high-quality materials to serve you for years to come. Designed...
      High quality at an affordable priceExpertly made from premium materials
      $674.00
    • (0 reviews)
      # 1022137080
      Dirt Late Model Exhaust Header by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with utmost care and meticulous attention to...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $348.03 - $640.27
    • (0 reviews)
      # 902525997
      IMCA Modified Steel Exhaust Header by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with utmost care and meticulous attention...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $202.38 - $631.85
    • (0 reviews)
      # 1022602060
      Sprint Car Exhaust Header by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with utmost care and meticulous attention to detail...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $221.66 - $591.15
    • (0 reviews)
      # 902581014
      Sprint Car Exhaust Header Kit by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with utmost care and meticulous attention to...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $183.10 - $269.85
    • (0 reviews)
      # mpn4564011350
      Zoomie Sprint Car Exhaust Header by Schoenfeld Headers®. Primary Tubing Diameter: 1.875". This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is designed with utmost...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $192.74
    • (0 reviews)
      # mpn4530554747
      Chrome-Plated Steel Exhaust Manifold Heat Shield by Racing Power Company®. Material: Chrome-Plated Steel. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced...
      One-of-a-kind style will help customize your autoWill deliver unparalleled levels of durability
      $59.67
    • (0 reviews)
      # 1141282842
      Header Gasket by Speed FX®. Do you want to get more power out of your vehicle? Then this superior Speed FX product is just for you. Carefully designed for maximum performance, is will more than just meet your needs and expectations....
      Made of High Quality materialsBuilt to last
      $30.28 - $33.09
    • (0 reviews)
      # mpn2662834505
      Hummer H3 3.7L 2008, Exhaust Manifold with Integrated Catalytic Converter by ATP®. Color: Natural. Header Coating: Uncoated. ATP Graywerks Exhaust Manifold-Converters provide a tested and proven solution to repair vehicles with...
      Engineered as direct OE replacement ensuring manifold will line up and flow like the original unitHigh grade steel and precious metals resist fatigue and provide long lasting reliable catalyst performance
      $433.04
    • (0 reviews)
      # mpn1151262264
      Hummer H3 5.3L 2008, Exhaust 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...
      Designed to restore your vehicle's original performanceProvides superior sealing performance
      $6.78
    • (0 reviews)
      # 623201687
      Hummer H3 5.3L 2008, Exhaust Manifold Flange Gasket by Victor Reinz®. 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
      $5.98 - $6.47
    • (0 reviews)
      # 1022100039
      Exhaust Headers by Torxe™. 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 and deliver great quality at an...
      High quality at an affordable priceExpertly made from premium materials
      $150.00 - $303.75
    • (0 reviews)
      # mpn4564011213
      IMCA Circle Track Racing 4-1 304 SS Long Tube Exhaust Headers by Torxe™. Primary Tubing Diameter: 1.75". Collector Outlet Diameter: 3.5". Color: Silver. Header Style: Long Tube. This product is made of high-quality materials to serve...
      High quality at an affordable priceExpertly made from premium materials
      $292.50
    • (0 reviews)
      # mpn4564011851
      IMCA Stainless Steel Mid-Length Tube Exhaust Headers by Torxe™. Primary Tubing Diameter: 1.75". Collector Outlet Diameter: 3.5". Color: Silver. Header Style: Mid-Length Tube. This product is made of high-quality materials to serve you...
      High quality at an affordable priceExpertly made from premium materials
      $225.00
    • (0 reviews)
      # mpn4564005563
      Lake Stainless Steel Short Tube Exhaust Headers by Torxe™. Primary Tubing Diameter: 1.63". Collector Outlet Diameter: 3.5". Color: Silver. Header Style: Short Tube. This product is made of high-quality materials to serve you for years...
      High quality at an affordable priceExpertly made from premium materials
      $250.00
    • (0 reviews)
      # mpn4564011374
      T-Bucket Roadster Hoodless Stainless Steel Long Tube Exhaust Headers by Torxe™. Primary Tubing Diameter: 1.5". Collector Outlet Diameter: 3.5". Color: Silver. Header Style: Long Tube. This product is made of high-quality materials to...
      High quality at an affordable priceExpertly made from premium materials
      $315.00
    • (0 reviews)
      # 1370621596
      Universal Manifold Stud by AP Exhaust®. This superior product was carefully designed with key attention to detail and manufactured from high-grade materials to the strict standards of the highest quality. This AP Exhaust Technologies...
      Made from first-rate materialsEnsures outstanding durability
      $0.29 - $0.77


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