{"product_id":"dougs-tri-y-header-58-64-chevy-348-409-w-block-1-3-4-2-primary-2-1-2-collector-silver-ceramic-coated-d309y","title":"Doug's Headers Doug's Tri Y Header 58-64 Chevy 348-409 W Block 1 3\/4-2\" Primary 2 1\/2\" Collector Silver Ceramic Coated D309Y","description":"\u003cp\u003eDoug's is the pioneering force behind the popular TRI-Y design for cars and trucks. The unique, shortend, paired primary tubes increase mid-range torque without sacrificing top end power.  TRI-Y's are a great choice for daily drivers and heavy duty trucks looking to increase power from idle up to 4500 RPM while maintaining maximum fuel efficiency.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e3\/8\" thick machined flanges to prevent warping\u003c\/li\u003e\n\u003cli\u003eCNC mandrel bent tubes ensure accurate fit and better flow\u003c\/li\u003e\n\u003cli\u003eHeavy 16-guage tubing for longer 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\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Attachment:\u003c\/strong\u003e 3-Bolt Flange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Diameter:\u003c\/strong\u003e 2.5 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Port Diameter:\u003c\/strong\u003e 2.5 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Head Port Shape:\u003c\/strong\u003e SAP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Tri-Y\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEGT Port:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmissionFullDES:\u003c\/strong\u003e 4 - This Product is considered a Replacement Part per CARB and EPA regulations for emissions compliance and is legal for sale and use on specified vehicles in all 50 states as stated in Manufacturer’s Application Guide and Installation Instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Metallic Ceramic Coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange Thickness:\u003c\/strong\u003e 0.375 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket Or Seal Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaskets Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade Type:\u003c\/strong\u003e Performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader Material:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader Style:\u003c\/strong\u003e Tri-Y\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hardware Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxygen Sensor Port:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Shape:\u003c\/strong\u003e SAP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Tube Outside Diameter:\u003c\/strong\u003e 1.75 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Tubing Diameter:\u003c\/strong\u003e 1.75 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSheen Level:\u003c\/strong\u003e Semi-Gloss\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Wall Thickness:\u003c\/strong\u003e 16 ga.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Doug's Headers","offers":[{"title":"Default Title","offer_id":45520500293767,"sku":"DOUD309Y","price":1782.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0744\/4008\/1543\/files\/D309Y.jpg?v=1788268469","url":"https:\/\/checkout.northernperformance.ca\/products\/dougs-tri-y-header-58-64-chevy-348-409-w-block-1-3-4-2-primary-2-1-2-collector-silver-ceramic-coated-d309y","provider":"Northern Performance","version":"1.0","type":"link"}