1985 GMC G-Series Performance Headers

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    • (0 reviews)
      # 231319927
      GMC G-Series 1985, 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 specifications,...
      Manufactured to OE design ensuring manifold will line up and flow like the original unitHigh grade metallurgy resists fatigue cracking and breakage
      $69.37 - $174.35
    • (0 reviews)
      # 231094347
      GMC G-Series 1985, Exhaust Manifold by Dorman®. Color: Natural. Header Coating: Uncoated. 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...
      High Quality tubular construction protects against warping and/or crackingLeak-resistant for long-lasting performance
      $67.95 - $205.95
    • (0 reviews)
      # 266660722
      GMC G-Series with Power Steering with A.I.R. System 1985, Standard Duty Mild Steel Long Tube Exhaust Headers by Hedman Hedders®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3". Header Style: Long Tube. The standard-duty...
      Made of High Quality MaterialsBuilt to Last
      $380.04 - $662.59
    • (0 reviews)
      # 1154713894
      GMC G-Series without Smog Injection or Injection Heads with Power Steering 1985, Standard Duty Mild Steel Long Tube Racing Exhaust Headers by Hedman Hedders®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3". Header Style:...
      Made from High Quality MaterialsBuilt to Last
      $247.85 - $523.25
    • (0 reviews)
      # mpn4564004617
      GMC G-Series 5.0L / 5.7L 1985, 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...
      High quality at an affordable priceExpertly made from premium materials
      $241.46
    • (0 reviews)
      # 231094418
      GMC G-Series with Angle or Straight Plug Heads with Chevy Small Block Engine 1985, Dirt Late Model Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.75"-1.875". Collector Outlet Diameter: 3.5". Color: Black. Header Coating:...
      Gaskets and bolts includedMachine surfaced flanges - no leaks
      $319.99 - $365.99
    • (0 reviews)
      # 231094465
      GMC G-Series with Chevy Small Block Engine 1985, Long Tube Pavement Late Model Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.75"-1.875". Collector Outlet Diameter: 3.5". Collector Length: 7.50". Color: Black. Header Coating:...
      35” Equal Length primaries for maximum Torque and HorsepowerValve covers are removable with headers installed
      $399.99 - $444.99
    • (0 reviews)
      # 231094399
      GMC G-Series with Chevy Small Block Engine 1985, Mild Steel 604 Crate Engine Dirt Late Model Exhaust Header Kit by Dynatech®. Primary Tubing Diameter: 1.625"-1.75". Collector Outlet Diameter: 3". These 604 Crate Engine Dirt Late Model...
      Delivers a huge boost in performance and an awesome soundRigorously dyno-tested to provide maximum horsepower and torque gains
      $379.99
    • (1 review)
      # 96830318
      GMC G-Series with Chevy Small Block Engine 1985, Pro Cruiser Street Rod Small Block Block Hugger Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.63". Collector Outlet Diameter: 2.5". Comes standard with a Full One Year...
      Improves Performance and Appearance100% stainless steel construction
      $299.99
    • (0 reviews)
      # 231094503
      GMC G-Series with Chevy Small Block Engine 1985, Stainless Steel 604 Crate Engine Dirt Late Model Exhaust Headers by Dynatech®. Primary Tubing Diameter: 1.625"-1.75". Collector Outlet Diameter: 3". These Stainless Steel 604 Crate Engine...
      Engineered for 604 Crate enginesGaskets and bolts included
      $1,062.49
    • (0 reviews)
      # 231094506
      GMC G-Series with Chevy Small Block Engine 1985, Stainless Steel Weld-up Dragster Exhaust Header Kit by Dynatech®. Primary Tubing Diameter: 1.875"-2". Color: Natural. Header Coating: Uncoated. These Long Tube Big Block Chevy Dragster...
      Tack-welded to make it easy to change or finish weldCNC laser-cut flanges, gaskets and bolts included
      $399.99
    • (0 reviews)
      # 781589777
      GMC G-Series 5.0L / 5.7L 1985, 409 SS Upright Exhaust Headers by Flowtech®. Collector Outlet Diameter: 3". Color: Silver. Header Coating: Uncoated. Flowtech Headers are the perfect combination of quality and value. Mandrel-bent tubes...
      Consistent tubing diameters for smooth flowIncreases the cylinder scavenging effect and improves engine breathing
      $226.95 - $247.95
    • (0 reviews)
      # mpn4564008678
      GMC G-Series Cutaway Van 5.7L 1985, Competition™ Mild Steel Long Tube Exhaust Headers by Hooker®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.5". Collector Length: 8". Color: Black. Header Coating: Painted. Header...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $258.95
    • (0 reviews)
      # 91567184
      GMC G-Series with Small Block Chevy Engine 1985, Lakester Steel Weld-Up Exhaust Kit by Patriot Exhaust®. Primary Tubing Diameter: 1.625". Material: Steel. This superior Patriot EXhaust product is just for you. Carefully designed for...
      Perfect blend of style, quality, and dependabilityGive your rod a nostalgic look
      $229.26 - $237.32
    • (0 reviews)
      # 378622663
      GMC G-Series 5.0L / 5.7L 1985, 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...
      Expertly crafted from premium materialsQuality design and workmanship
      +1
      $255.91 - $556.88
    • (0 reviews)
      # 447962843
      GMC G1500 / G2500 / G3500 1985, Steel Long Tube Exhaust Headers by Patriot Exhaust®. Collector Outlet Diameter: 3". Header Style: Long Tube. This superior Patriot EXhaust product is just for you. Carefully designed for maximum...
      Expertly crafted from premium materialsQuality design and workmanship
      $315.49 - $679.49
    • (0 reviews)
      # 231094601
      GMC G-Series with Small Block Chevy Engine 1985, Steel Long Tube Bucket Sprint Car Style Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3.5". Color: Gray. Header Coating: Uncoated....
      Expertly crafted from premium materialsQuality design and workmanship
      $236.01
    • (0 reviews)
      # 231094615
      GMC G-Series with Small Block Chevy Engine 1985, Steel Tight Tuck Street Rod Exhaust Headers by Patriot Exhaust®. Primary Tubing Diameter: 1.625". This superior Patriot Exhaust product is just for you. Carefully designed for maximum...
      Expertly crafted from premium materialsQuality design and workmanship
      $205.77 - $539.96
    • (0 reviews)
      # 378622659
      GMC G-Series 5.0L / 5.7L 1985, 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...
      Expertly crafted from premium materialsQuality design and workmanship
      $264.28 - $512.24
    • (0 reviews)
      # 231319952
      GMC G-Series with Chevy Small Block Engine 1985, Conventional Crossover Exhaust Headers by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $261.32 - $699.45
    • (0 reviews)
      # 87333104
      GMC G-Series with Chevy Small Block Engine 1985, DIRT Modified Exhaust Headers 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...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $261.11 - $297.76
    • (0 reviews)
      # 266661108
      GMC G-Series with Chevy Small Block Engine 1985, Demolition Derby Exhaust Headers by Schoenfeld Headers®. Primary Tubing Diameter: 1.625". This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $144.22
    • (0 reviews)
      # 231320005
      GMC G-Series with Chevy Small Block Engine 1985, Dirt Late Model Exhaust Headers by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $261.32 - $720.76
    • (0 reviews)
      # 466951648
      GMC G-Series with Chevy Small Block Engine 1985, H Style Conventional Crossover Headers by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $261.32 - $292.18
    • (0 reviews)
      # 87333152
      GMC G-Series with Chevy Small Block Engine 1985, IMCA Modified Exhaust Headers 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...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $167.23 - $379.85
    • (0 reviews)
      # 231320086
      GMC G-Series with Chevy Small Block Engine 1985, SBC Chassis Steel Exhaust Headers by Schoenfeld Headers®. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates. This product is...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $167.23 - $212.02
    • (0 reviews)
      # 266660735
      GMC G-Series with Chevy Small Block Engine 1985, Steel 180 Crossover Exhaust Headers by Schoenfeld Headers®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 3". Header Coating: Painted. This top-notch product by Schoenfeld...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $271.78
    • (0 reviews)
      # 231320143
      GMC G-Series with Chevy Small Block Engine 1985, Steel Sprint Car Exhaust Headers by Schoenfeld Headers®. Header Coating: Painted. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $239.03 - $666.21
    • (0 reviews)
      # 231320121
      GMC G-Series with Chevy Small Block Engine 1985, Stock Clip Steel Exhaust Headers by Schoenfeld Headers®. Header Coating: Painted. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $198.59 - $291.63
    • (0 reviews)
      # 231320169
      GMC G-Series with Chevy Small Block Engine 1985, Street Stock Steel Exhaust Headers by Schoenfeld Headers®. Header Coating: Painted. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $219.50 - $599.72
    • (0 reviews)
      # 266661453
      GMC G-Series with Chevy Small Block Engine 1985, Zoomie Exhaust Headers by Schoenfeld Headers®. Standard Zoomie Grassburner. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver appreciates....
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $133.12
    • (0 reviews)
      # mpn4530157521
      GMC G-Series 5.0L / 5.7L 1985, Hugger Style Headers by CFR Performance®. Ceramic coated "HUGGER" style headers. Heavy-duty construction with 1-5/8" tubes and 3/8" thick flange. Includes collector reducers, gaskets and bolts.
      Expertly Crafted from the highest grade materialsBuilt to provide the ultimate in reliability and strength
      $198.29
    • (0 reviews)
      # 231094498
      GMC G-Series with Chevy Small Block Engine / with LS-Based Engines 1985, MuscleMAXX Stainless Steel Header Reducer Cone Kit by Dynatech®. Material: Stainless Steel. Dynatech® reducer cone kits for MuscleMaxx headers. Reducers bolt to...
      Made of High Quality MaterialsBuilt to Last
      $139.99 - $160.99
    • (0 reviews)
      # mpn358582413
      GMC G-Series 5.0L / 5.7L 1985, 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...
      High quality at an affordable priceExpertly made from premium materials
      $115.02
    • (0 reviews)
      # 266661145
      GMC G-Series with Chevy Small Block Engine 1985, Header Flanges by Schoenfeld Headers®. Primary Tubing Diameter: 1.25". Material: Aluminum. This top-notch product by Schoenfeld Headers is made to give that extra boost that every driver...
      Engineered to enhance your vehicle's performanceMade to stringent quality standards
      $53.42
    • (0 reviews)
      # 1092395825
      GMC G-Series 1985, 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,...
      Quick accurate delivery with excellent fill-rateExcellent inventory availability
      $3.36 - $8.63
    • (0 reviews)
      # mpn1151262244
      GMC G-Series 5.0L / 5.7L 1985, 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...
      Designed to restore your vehicle's original performanceProvides superior sealing performance
      $4.12
    • (0 reviews)
      # mpn306537478
      GMC G-Series 5.0L / 5.7L For Stock Or CNC Ported Heads 1985, Premium Header Gasket Set by BBK®. These premium steel core graphite gaskets are flexible for a long lasting leak-proof seal even when cylinder head and header flange surfaces...
      Provides a long lasting, leak-proof sealFlexible graphite will conform to surface irregularities and won't stick to headers or cylinder head
      $39.99
    • (0 reviews)
      # 231319948
      GMC G-Series with Small Block Chevy Engine 1985, Exhaust Header Copper Gasket by Big End Performance®. This Big End Performance product is just the option for you in case you want to get the most out of your auto. It is made from...
      Designed to boost your vehicle's performanceMade from high-quality materials
      $34.05 - $34.76
    • (0 reviews)
      # 231094389
      GMC G-Series with Small Block Chevy Engine 1985, Spread Port Exhaust Header Gasket by Brodix®. The Brodix Exhaust Gaskets are specifically engineered to fit the precise dimensions of Brodix cylinder heads. When the competition is on the...
      Designed to boost your vehicle's performanceMade from high-quality materials
      $15.59
    • (0 reviews)
      # 466388364
      GMC G-Series 1985, 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
      $19.13 - $35.86
    • (0 reviews)
      # 564672734
      GMC G-Series 1985, Multi-Layer Steel Exhaust Manifold Gasket by Cometic Gasket®. Material: Multi-Layer Steel. This state-of-the-art exhaust product combines advanced materials with the most current manufacturing processes to provide...
      Backed by unsurpassed quality and solid workmanshipWill deliver exceptional performance you expect to get
      $36.81
    • (0 reviews)
      # 231094413
      GMC G-Series with Chevy Small Block Engine 1985, Aluminum Adapter Plate by Dynatech®. Material: Aluminum. These SBC to Stahl Aluminum Adapter Plate Kits allow you to use a larger tube size to maximize power.
      Delivers a huge boost in performance and an awesome soundRigorously dyno-tested to provide maximum horsepower and torque gains
      $164.99
    • (0 reviews)
      # 231094428
      GMC G-Series with Chevy Small Block Engine 1985, Fiber Exhaust Header Gasket by Dynatech®. Material: Fiber. Dynatech Fiber Race Gaskets are the premium gaskets demanded by many enthusiasts and racers alike. Specifically designed to fit...
      Made of High Quality MaterialsNo Leaks
      $15.99
    • (0 reviews)
      # 231094501
      GMC G-Series with Chevy Small Block Engine 1985, Spread Port Exhaust Header Gasket Kit by Dynatech®. Dynatech Fiber Race Gaskets are the premium gaskets demanded by many enthusiasts and racers alike. Specifically designed to fit a wide...
      Made of High Quality MaterialsBuilt to Last
      $18.29
    • (0 reviews)
      # 270960722
      GMC G-Series with Chevy Small Block Engine 1985, Standard Port Exhaust Header Gasket Kit by Dynatech®. Dynatech Fiber Race Gaskets are the premium gaskets demanded by many enthusiasts and racers alike. Specifically designed to fit a...
      Made of High Quality MaterialsSold in Pairs
      $15.99
    • (0 reviews)
      # mpn4564003265
      GMC G1500 / G2500 5.0L / 5.7L 1985, Super Competition™ Exhaust Header Gasket by Hooker®. Hooker's precision-matched Super Competition header gaskets provide a sure fit and unmatched exhaust sealing. This OEM quality gasket is...
      Precision fit for improved sealingSteel core provides superior adhesion
      $13.47
    • (0 reviews)
      # 622866771
      GMC G-Series 1985, Header Gasket by Howe Racing Enterprises®. Designed utilizing the latest technology, this product by Howe Racing Enterprises® features premium quality and will perform better than advertised. Perfect for your vehicle...
      High quality at an affordable priceExpertly made from premium materials
      $11.79
    • (0 reviews)
      # 1022402120
      GMC G-Series 5.0L / 5.7L 1985, Multi-Layered Steel Exhaust Header Gaskets by Mr. Gasket®. Material: Multi-Layered Steel. Whatever exhaust system you install on your engine, whether it's a set of chromed headers or simply a set of...
      Gaskets for every application, from mild to wildDesigned to restore functionality
      $17.66
    • (0 reviews)
      # 231094594
      GMC G-Series with Small Block Chevy Engine 1985, Header Flange Kit by Patriot Exhaust®. Patriot precision machined header flange kits are available for many popular engine families. Header flange kits come complete with gaskets and...
      Precision machined flangeBuilt of High quality materials
      $44.03 - $67.69
    • (0 reviews)
      # 652362784
      GMC G-Series 1985, Graph-Flex Header Flange Gaskets by Percy's High Performance®. Persy's High Performance makes exhaust manifold and collector gaskets that will withstand the temperatures generated by turbocharged motors, and exhaust...
      Modified engines have hotter exhaustBetter materials help seal poorly-mating flanges better.
      $23.97
    • (0 reviews)
      # 652740883
      GMC G-Series 1985, Graph-Flex™ Exhaust Header Gaskets by Percy's High Performance®. These extreme high-temperature gaskets are well-suited for highly-modified engines: turbocharged, supercharged, nitrous or fuel. This is a premium,...
      Malleable stainless steel metal coreWill survive 2000°F exhaust temperatures for extended periods
      $21.54 - $23.97
    • (0 reviews)
      # 652678864
      GMC G-Series 1985, HTR Collector Gaskets by Percy's High Performance®. This products is an OEM and Performance company that was built on its founding heritage supported by a tradition of Legendary Quality.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $16.86 - $18.77
    • (0 reviews)
      # 652822904
      GMC G-Series 1985, Seal-4-Good™ Aluminum Header Flange Gaskets by Percy's High Performance®. Material: Aluminum. Percy's High Performance makes exhaust manifold and collector gaskets that will withstand the temperatures generated by...
      Modified engines have hotter exhaustBetter materials help seal poorly-mating flanges better.
      $35.11
    • (0 reviews)
      # 652178790
      GMC G-Series 1985, Seal-4-Good™ Exhaust Header Gaskets by Percy's High Performance®. These extreme high-temperature gaskets are well-suited for highly-modified engines: turbocharged, supercharged, nitrous or fuel. This is a premium,...
      Multi-layered for excellent conformability and sealSeals even imperfect flanges
      $33.24 - $35.11
    • (0 reviews)
      # 652551885
      GMC G-Series 1985, Seal-4-Good™ Round Header Flange Gaskets by Percy's High Performance®. This products is an OEM and Performance company that was built on its founding heritage supported by a tradition of Legendary Quality. Designed...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $35.11
    • (0 reviews)
      # 652538906
      GMC G-Series 1985, XX Carbon™ Exhaust Header Gaskets by Percy's High Performance®. These extreme high-temperature gaskets are well-suited for highly-modified engines: turbocharged, supercharged, nitrous or fuel. This is a premium,...
      Malleable stainless steel metal coreWill survive 2000°F exhaust temperatures for extended periods
      $19.16 - $21.77
    • (0 reviews)
      # 652205871
      GMC G-Series 1985, XX Carbon™ Header Flange Gaskets by Percy's High Performance®. Persy's High Performance makes exhaust manifold and collector gaskets that will withstand the temperatures generated by turbocharged motors, and exhaust...
      Modified engines have hotter exhaustBetter materials help seal poorly-mating flanges better.
      $21.77
    • (0 reviews)
      # 231094647
      GMC G-Series 1985, Soft Conforming Aluminum Header Gasket Set by ProForm®. Material: Soft Conforming Aluminum. Made From Soft Conforming Aluminum Material, Easily Mates and Conforms To The Surface Of Exhaust Headers To Provide a Great...
      Designed to upgrade your ride's performanceProduced by highly specialized machines to last
      $24.93
    • (0 reviews)
      # 482129986
      GMC G-Series 1985, Exhaust Header Gaskets by Remflex®. Remflex's unique flexible graphite material has been proven for more than 30 years in industrial applications, where temperatures routinely exceed 2,000 degrees. Whether you have an...
      Designed to crush 50%.This allows them to fill gaps in the flange surface up to 1/16"3,000 degrees F - far exceeding that of any vehicle's exhaust system temperature
      $27.81 - $30.20




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