2003 Hummer H2 Exhaust Headers & Manifolds
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ATP®Cast Iron Natural Exhaust ManifoldHummer H2 2003, Natural Cast Iron Exhaust Manifold by ATP®. Color: Natural. Header Coating: Uncoated. ATP Graywerks Exhaust Manifolds are a high quality OE replacement alternative. Each manifold is developed off of the original parts...Manufactured to OE design ensuring manifold will line up and flow like the original unitHigh grade metallurgy resists fatigue cracking and breakage$89.83 - $115.75 - Gibson®Performance Stainless Steel Short Tube Exhaust HeadersHummer H2 without Air Injection, EGR System 2003, Performance Stainless Steel Short Tube Exhaust Headers by Gibson®. Primary Tubing Diameter: 1.63". Collector Outlet Diameter: 2.5". Header Style: Short Tube. Let your engine breathe and...Increases low and mid-range horsepower and torqueIncreases engine efficiency$793.84 - $949.46Save: 12%$699.19 - $836.25
- Dorman®Exhaust ManifoldHummer H2 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$88.68 - $185.98
- TRQ®Exhaust ManifoldHummer H2 2003, Exhaust Manifold by TRQ®. Position: Driver Side. Made with quality in mind, this high-grade TRQ exhaust manifold fits right away without any trouble. It is built using the latest technology and innovation to meet your...Intended to bring your vehicle back to its original gloryBudget-friendly alternative to the OEM part$107.95Save: $5.40 (5%)$102.55
- Dorman®Exhaust Manifold Hardware KitHummer H2 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 - $14.90
- Davico®Exhaust ManifoldHummer H2 2003, Exhaust Manifold by Davico®. This product by Davico will be a great solution to replace your failed or damaged exhaust manifold. Once your stock cat fails to perform its job, replacement is the only solution. Make sure...Helps your vehicle emit harmless gasesDirect OEM replacement$80.23 - $80.80
- SKP®Exhaust ManifoldHummer H2 2003, Exhaust Manifold by SKP®. Put your vehicle back to its original condition with this top-notch transfer case component designed to efficiently transmit the engine power to both the front and rear axles through...Designed to send the engine power to both the front and rear axlesDirect-fit replacement for your overworked, out-of-shape transfer case$69.98 - $71.76
- ACDelco®Genuine GM Parts™ Exhaust ManifoldHummer H2 2003, Genuine GM Parts™ Exhaust Manifold by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$167.91 - $282.88Save: 16%$141.87 - $239.01
- Hedman Hedders®Standard Duty Mild Steel Short Tube Exhaust HeadersHummer H2 with Air Conditioning, Power Steering, A.I.R, AutomaticTransmission, Automatic Transmission Floor Shifter / Automatic Transsmision Column Shifter / Manual Transmission Floor Shifter and without Manual Transmission Column...Made of High Quality 304 SSBuilt to Last$472.07 - $876.05
- SKP®Exhaust Manifold BracketHummer H2 2003, Exhaust Manifold Bracket by SKP®. Put your vehicle back to its original condition with this top-notch transfer case component designed to efficiently transmit the engine power to both the front and rear axles through...Designed to send the engine power to both the front and rear axlesDirect-fit replacement for your overworked, out-of-shape transfer case$20.81
- SKP®Exhaust Manifold Hardware KitHummer H2 2003, Exhaust Manifold Hardware Kit by SKP®. Put your vehicle back to its original condition with this top-notch transfer case component designed to efficiently transmit the engine power to both the front and rear axles...Designed to send the engine power to both the front and rear axlesDirect-fit replacement for your overworked, out-of-shape transfer case$9.56
- JBA®Cat4ward Stainless Steel Shorty Exhaust HeadersHummer H2 2003, Cat4ward Stainless Steel Shorty Exhaust Headers by JBA®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.5". Header Material: Stainless Steel. Header Style: Short Tube. JBA shorty headers are one of the...Mandrel-bent stainless steel primary tubesPatented JBA Firecone® collector$641.45 - $799.95
- Stage 8®Steel Nickel plated Header Locking Bolt KitHummer H2 2003, Steel Nickel plated 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...Thoughtfully designed for the highest efficiency and safetyWill provide more breakaway torque than any other locking system$75.82
- Remflex®Exhaust Header GasketsHummer H2 Base 2003, Exhaust Header Gaskets by Remflex®. Remflex's unique flexible graphite material has been proven for more than 30 years in industrial applications. Whether you have an old pick-up that needs a manifold gasket or a...Designed to crush 50%This allows them to fill gaps in the flange surface up to 1/16"$31.83
- Fel-Pro®Exhaust Manifold Gasket SetHummer H2 2003, 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...Ensures reliable sealing performanceMade using advanced technologies and molded rubber chemistry$14.05
- ACDelco®Genuine GM Parts™ Exhaust Manifold GasketHummer H2 2003, Genuine GM Parts™ 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 and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$23.18Save: $3.47 (15%)$19.71
- Apex Auto®Exhaust Manifold Gasket SetHummer H2 2003, 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.76
- Elring®Exhaust Manifold GasketHummer H2 2003, Exhaust Manifold Gasket by Elring®. For professional repairs, place your trust in gaskets, gasket sets and service parts from Elring - the reliable and experienced supplier of spare parts to original equipment standard....OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$10.91
- Mahle®Exhaust Manifold GasketHummer H2 2003, 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 deliver...High quality at an affordable priceExpertly made from premium materials$15.07
- Fel-Pro®Exhaust Manifold Hardware KitHummer H2 2003, 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$28.25
- Dorman®Exhaust Manifold to Cylinder Head Repair ClampHummer H2 2003, Exhaust Manifold to Cylinder Head Repair Clamp by Dorman®. Easily repair exhaust leaks without removing broken manifold bolts with Dorman's Exhaust Manifold to Cylinder Head Repair Clamp. This Manifold Repair Clamp...Eliminates the need to remove cylinder head, saving you time and moneyReduces installation time$27.19 - $36.47
- Hedman Hedders®Cast Steel Exhaust ManifoldsCast Steel Exhaust Manifolds by Hedman Hedders®. Primary Tubing Diameter: 1.625". These cast steel manifolds have a low profile. Their design offers excellent clearance, while the thick cast design is extremely durable and dramatically...Made of High Quality Cast SteelBuilt to Last$422.30 - $512.44
- Dorman®Brass Exhaust Manifold Hardware KitBrass 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$5.63
- Vibrant Performance®Stainless Steel Exhaust FlangeUniversal Stainless Steel Exhaust Flange by Vibrant Performance®. 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...High quality at an affordable priceExpertly made from premium materials$5.75 - $69.99
- Walker®Manifold Stud Bolt KitManifold Stud Bolt Kit by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose Walker accessories, you...Makes installation quick and easyOptimal OE-style fit and quality$0.63 - $0.87
- BRExhaust®Exhaust Manifold NutExhaust Manifold Nut by BRExhaust®. BRExhaust has a vast selection of all necessary accessories and hardware to help you make the exhaust system installation or repair job quickly and easily. Choose BRExhaust, and you'll get OE-quality...Constructed for a hassle-free exhaust repairEnsures a precise fit$1.22 - $2.54
- Victor Reinz®Exhaust Manifold Gasket SetHummer H2 2003, Exhaust Manifold Gasket Set 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 your needs...High quality at an affordable priceExpertly made from premium materials$14.56
- Jones Exhaust®Exhaust FlangeUniversal Exhaust Flange by Jones Exhaust®. 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...High quality at an affordable priceExpertly made from premium materials$2.27 - $3.25
- Nickson®Exhaust Collector GasketExhaust Collector Gasket by Nickson®. Nickson was the first to introduce exhaust products to the aftermarket. This represented a substantial upgrade in the quality of products especially since they took both the Ford and GM OE designs...Expertly crafted from premium materialsQuality design and workmanship$1.22 - $7.43
- Nickson®Exhaust Manifold InsulatorExhaust Manifold Insulator by Nickson®. Nickson was the first to introduce exhaust products to the aftermarket. This represented a substantial upgrade in the quality of products especially since they took both the Ford and GM OE designs...Expertly crafted from premium materialsQuality design and workmanship$6.02
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