{"product_id":"dougs-headers-d331-2-1-8-4-tube-full-length-header-chevelle-big-block-chevrolet-68-72-metallic-ceramic-coating","title":"Doug's Headers D331 - 2 1\/8\" 4-Tube Full Length Header Chevelle Big Block Chevrolet 68-72 Metallic Ceramic Coating","description":"\u003cp\u003eDoug's Headers D331 - 2 1\/8\" 4-Tube Full Length Header Chevelle Big Block Chevrolet 68-72 Metallic Ceramic Coating\u003c\/p\u003e\u003cp\u003eHeaders - Full - 2.125 in Primary - 3.5 in Collector - Gaskets \/ Hardware \/ Reducers Included - Steel - Silver Ceramic - Big Block Chevy - GM A-Body 1968-72 - Kit\u003c\/p\u003e\u003cp\u003eDoug's Long Tube Header 68-77 GM A Body 396-502 BBC Non Cat, no EGR or A.I.R. 2 1\/8\" Primary 3 1\/2\" Collector Silver Ceramic Coated D331\u003c\/p\u003e\u003cp\u003eLong tube headers provide the greatest increases in horsepower and torque across the entire RPM spectrum. The choice of racers worldwide, Doug's long tube headers are designed for the car owner who wants maximum power and the highest quality header on the market.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3\/8\" Thick machined flanges to prevent warping\u003c\/li\u003e\n\u003cli\u003ePrecision formed long transition collectors and long tube design reduces backpressure and increases higher RPM horsepower\u003c\/li\u003e\n\u003cli\u003eHeavy duty 16-gauge tubing for long life\u003c\/li\u003e\n\u003cli\u003eTubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCollector Attachment\u003c\/strong\u003e: \u003cspan\u003e3-Bolt Flange\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCollector Diameter\u003c\/strong\u003e: \u003cspan\u003e3.5\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCollector Port Diameter\u003c\/strong\u003e: \u003cspan\u003e3.5\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCylinder Head Port Shape\u003c\/strong\u003e: \u003cspan\u003eRound\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDesign\u003c\/strong\u003e: \u003cspan\u003eFull-length\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEGT Port\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEmissionFullDES\u003c\/strong\u003e: \u003cspan\u003e3 - This Product is LEGAL for Closed Course Competition use or Pre-Emissions Controlled Vehicles ONLY. It is Not Legal for use on any Emissions Controlled Vehicle for Street or Off Highway use.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: \u003cspan\u003eMetallic Ceramic Coated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFlange Thickness\u003c\/strong\u003e: \u003cspan\u003e0.375\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eGasket Or Seal Included\u003c\/strong\u003e: \u003cspan\u003eYes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eGaskets Included\u003c\/strong\u003e: \u003cspan\u003eYes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eGrade Type\u003c\/strong\u003e: \u003cspan\u003ePerformance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eHeader Material\u003c\/strong\u003e: \u003cspan\u003eSteel\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eHeader Style\u003c\/strong\u003e: \u003cspan\u003eFull-length\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: \u003cspan\u003eSteel\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMounting Hardware Included\u003c\/strong\u003e: \u003cspan\u003eYes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eOxygen Sensor Port\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePort Shape\u003c\/strong\u003e: \u003cspan\u003eRound\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePrimary Tube Outside Diameter\u003c\/strong\u003e: \u003cspan\u003e2.125\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePrimary Tubing Diameter\u003c\/strong\u003e: \u003cspan\u003e2.125\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSheen Level\u003c\/strong\u003e: \u003cspan\u003eSemi-Gloss\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTube Wall Thickness\u003c\/strong\u003e: \u003cspan\u003e16\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Doug's Headers","offers":[{"title":"Default Title","offer_id":51026231984406,"sku":"BKLK-D331","price":1217.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/0878\/9782\/files\/0_d331_normalized.jpg?v=1776759768","url":"https:\/\/www.cspracing.com\/products\/dougs-headers-d331-2-1-8-4-tube-full-length-header-chevelle-big-block-chevrolet-68-72-metallic-ceramic-coating","provider":"Complete Street Performance","version":"1.0","type":"link"}