{"product_id":"evil-energy-6an-male-to-dual-quick-disconnect-efi-fuel-rail-adapter-3-8-5-16-aluminum-1500-psi","title":"EVIL ENERGY 6AN Male to Dual Quick-Disconnect EFI Fuel Rail Adapter — 3\/8\" \u0026 5\/16\", Aluminum, 1500 psi","description":"\u003cp\u003e\u003cstrong\u003eEVIL ENERGY's 6AN male to dual quick-disconnect female EFI fuel rail fitting converts a 6AN 37° flare connection to 3\/8\" and 5\/16\" quick-disconnect fuel lines in a compact, aluminum alloy component.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact adapter is engineered for high-pressure fuel systems commonly found on EFI engines, LS swaps and aftermarket fuel rails. Machined from 6061-T6 aluminum with a 37° flare sealing surface, it accepts a 6AN (9\/16-18UNF) male thread and provides two female quick-disconnect ports sized for 3\/8\" and 5\/16\" inner-diameter lines. Rated to 1500 psi and built to work across a broad temperature range, it bridges AN fittings and factory-style quick-disconnect fuel hoses in retrofit and custom installations.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the 6AN thread interface with factory fuel lines?\u003c\/h3\u003e\n\u003cp\u003eThe adapter uses a 6AN (9\/16-18UNF) male flare thread to mate with standard AN-style fuel components. Internally it presents two quick-disconnect female ports that accept 3\/8\" and 5\/16\" fuel hoses typically used on EFI rails and sensors.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e6AN male thread: 9\/16-18UNF thread pitch\u003c\/li\u003e\n  \u003cli\u003eFemale quick-disconnect IDs: 3\/8\" and 5\/16\"\u003c\/li\u003e\n  \u003cli\u003e37° flare sealing angle to match AN fittings\u003c\/li\u003e\n  \u003cli\u003eDirect, tool-friendly installation for retrofit work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this fitting durable enough for high-pressure EFI systems?\u003c\/h3\u003e\n\u003cp\u003eYes — the body is CNC-machined from 6061-T6 aluminum, a material commonly used in fuel-system components for strength-to-weight balance. The design includes a metal-to-metal 37° flare seal and a plastic spring lock in the quick-disconnect mechanism for reliable retention without excessive weight.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorking pressure rating: 1500 psi\u003c\/li\u003e\n  \u003cli\u003eOperating temperature range: -40°F to 250°F\u003c\/li\u003e\n  \u003cli\u003eAluminum alloy 6061-T6 construction for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003ePlastic spring lock on quick-disconnect for positive engagement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich applications and vehicles is this adapter suited for?\u003c\/h3\u003e\n\u003cp\u003eThe adapter is designed for fuel rails, aftermarket EFI conversions, LS swaps, transmission cooler feed\/return lines and installations that require mixing AN-style fittings with quick-disconnect factory hoses or sensors. It’s ideal where space is limited and a compact conversion is needed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEFI fuel rails and aftermarket carburetion conversion lines\u003c\/li\u003e\n  \u003cli\u003eLS engine swaps and custom fuel-system plumbing\u003c\/li\u003e\n  \u003cli\u003eFuel sensors, return lines, and transmission cooler feeds\u003c\/li\u003e\n  \u003cli\u003eRetrofit projects bridging AN fittings to OE-style quick-disconnect hoses\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install and maintain this quick-disconnect fuel fitting?\u003c\/h3\u003e\n\u003cp\u003eInstallation requires standard AN wrenches and verifying proper orientation of the quick-disconnect ports. Inspect seals and the plastic spring lock periodically; replace any damaged hoses or worn quick-disconnect collars to maintain system integrity.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTighten 6AN male to mating AN flare using correct torque practices\u003c\/li\u003e\n  \u003cli\u003ePush fuel hoses into quick-disconnect ports until the spring lock engages\u003c\/li\u003e\n  \u003cli\u003eCheck for leaks at assembly and after initial run-in\u003c\/li\u003e\n  \u003cli\u003eReplace plastic spring lock or O-rings if damaged or worn\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This EVIL ENERGY adapter is for mechanics, fabricators, and enthusiasts building or modifying EFI fuel systems who need a compact conversion from a 6AN flare connection to factory-style 3\/8\" and 5\/16\" quick-disconnect lines. It suits anyone working on LS swaps, aftermarket fuel rails, or custom plumbing where a reliable, pressure-rated aluminum fitting is required.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What thread size is the 6AN connection?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The 6AN male thread is 9\/16-18UNF, compatible with standard AN fittings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What pressure and temperature can this fitting handle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Rated to 1500 psi and operates between -40°F and 250°F.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"EVIL ENERGY","offers":[{"title":"Default Title","offer_id":48086862397598,"sku":"B0C4SHM6QL","price":30.63,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/evil-energy-front-fitting.jpg?v=1785908419","url":"https:\/\/northtrailauto.ca\/products\/evil-energy-6an-male-to-dual-quick-disconnect-efi-fuel-rail-adapter-3-8-5-16-aluminum-1500-psi","provider":"North Trail Auto","version":"1.0","type":"link"}