{"product_id":"fenderwell-headers-for-55-57-chevy-265-400-sbc-1-3-4in-primary-d355-b","title":"Fenderwell Headers for 55-57 Chevy 265-400 SBC 1-3\/4in Primary D355-B","description":"\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e55-57 Chevy SBC Fenderwell Black Ctd\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3\/8\" thick 304 stainless machine flanges to prevent warping\u003c\/li\u003e\n\u003cli\u003eCNC 304 stainless mandrel bent tubes for an accurate fit and improved flow\u003c\/li\u003e\n\u003cli\u003ePrecision formed long transition collectors and long tube design reduce backpressure and increase higher RPM horsepower\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand: \u003c\/strong\u003eDoug's Headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Attachment: \u003c\/strong\u003e3-Bolt Flange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Diameter: \u003c\/strong\u003e3.0 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Port Diameter: \u003c\/strong\u003e3.0 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor: \u003c\/strong\u003eBlack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Head Port Shape: \u003c\/strong\u003eSAP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign: \u003c\/strong\u003eFenderwell\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEGT Port: \u003c\/strong\u003eNo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish: \u003c\/strong\u003eHi-Temp Black Coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange Thickness: \u003c\/strong\u003e0.375 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket Or Seal Included: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaskets Included: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade Type: \u003c\/strong\u003ePerformance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader Material: \u003c\/strong\u003eSteel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader Style: \u003c\/strong\u003eFenderwell\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial: \u003c\/strong\u003eSteel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hardware Included: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxygen Sensor Port: \u003c\/strong\u003eNo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Shape: \u003c\/strong\u003eSAP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Tube Outside Diameter: \u003c\/strong\u003e1.75 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Tubing Diameter: \u003c\/strong\u003e1.75 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProp 65 (C, R or CR): \u003c\/strong\u003eCR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProp 65 Yes\/No: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSheen Level: \u003c\/strong\u003eMatte\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTitle: \u003c\/strong\u003eDoug's Fenderwell Header 55-57 Chevy 265-400 SBC 1 3\/4\" Primary 3\" Collector Black Hi Temp Coated D355-B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Wall Thickness: \u003c\/strong\u003e16 GU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number: \u003c\/strong\u003eD355-B\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1955-1957 Chevrolet One-Fifty Series 265 CID\u003c\/li\u003e\n\u003cli\u003e1955-1957 Chevrolet Two-Ten Series 265 CID\u003c\/li\u003e\n\u003cli\u003e1955-1957 Chevrolet Sedan Delivery 265 CID\u003c\/li\u003e\n\u003cli\u003e1955-1957 Chevrolet Bel Air 265 CID\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eEmissions:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eThis product is Legal for use on Pre-Pollution Controlled Vehicles. It is legal for use on all vehicles produced Before Emissions Control Regulations were imposed. These are considered Uncontrolled Vehicles and are defined as follows\u003cul\u003e\n\u003cli\u003e1965 and Older US Manufactured California Certified Vehicles\u003c\/li\u003e\n\u003cli\u003e1967 and Older US Manufactured Federally Certified Vehicles\u003c\/li\u003e\n\u003cli\u003e1967 and Older Foreign Manufactured Vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eInstructions:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/prod-da.s3.us-east-2.amazonaws.com\/BHKJ\/c88faa6429445719ff8503c5049ce955.pdf\" target=\"_blank\"\u003eClick here for installation instructions!\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment Notes: \u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFenderwell\u003c\/li\u003e\n\u003cli\u003eMay require smaller front tires to avoid contact.\u003c\/li\u003e\n\u003cli\u003eFits most angle plug heads.\u003c\/li\u003e\n\u003cli\u003eWill fit with 605 power steering box.\u003c\/li\u003e\n\u003cli\u003eFits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 and ZZ6 engines.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Doug's Headers","offers":[{"title":"Default Title","offer_id":54508692766933,"sku":"D355-B-BKLK","price":940.55,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2493\/0960\/files\/4f38ffb68264f9ed7538218efe59b49a.jpg?v=1786704837","url":"https:\/\/moderndaymuffler.com\/products\/fenderwell-headers-for-55-57-chevy-265-400-sbc-1-3-4in-primary-d355-b","provider":"Modern Day Muffler","version":"1.0","type":"link"}