{"product_id":"evil-energy-6an-male-to-3-8in-efi-quick-disconnect-adapter-2-pack-6061-t6-aluminum-1500-psi","title":"EVIL ENERGY 6AN Male to 3\/8in EFI Quick-Disconnect Adapter (2-Pack) — 6061-T6 Aluminum, 1500 psi","description":"\u003cp\u003e\u003cstrong\u003eEVIL ENERGY's 6AN male to 3\/8\" quick-disconnect EFI fuel fitting (2-pack) is a high-pressure aluminum adapter that links 6AN lines to 3\/8\" EFI quick-disconnect ports with a 37° sealed flare for leak-resistant performance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis precision-machined adapter converts a 6AN (9\/16-18UNF) male flare to a 3\/8\" quick-disconnect female inlet commonly found on EFI systems, fuel rails, return lines and sensors. Built from 6061-T6 aluminum and rated for demanding conditions, the fitting is designed for performance engines, custom swaps and professional repairs. The package includes two identical fittings so you can replace or install multiple connections at once.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this adapter stop fuel leaks?\u003c\/h3\u003e\n\n\u003cp\u003eThe fitting uses a 37° flare sealing surface — a standard angle in AN\/EFI connections — to create a metal-to-metal seal that resists seepage under high pressure. Thread engagement and precise machining ensure consistent contact between mating surfaces, while the quick-disconnect female side provides a secure snap-fit for compatible EFI lines.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e37° sealed flare design minimizes leakage at the connection point.\u003c\/li\u003e\n  \u003cli\u003e9\/16-18UNF 6AN male threading ensures proper fit with AN lines.\u003c\/li\u003e\n  \u003cli\u003ePrecision threads and tolerances reduce cross-threading and gaps.\u003c\/li\u003e\n  \u003cli\u003eQuick-disconnect female interface for fast, repeatable connections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this hold up under high pressure and temperature?\u003c\/h3\u003e\n\n\u003cp\u003eYes — the adapter is rated to 1500 psi and is specified for -40°F to 250°F operation, covering most automotive fuel system environments. The 6061-T6 aluminum construction provides an excellent strength-to-weight ratio and good thermal stability for repeated use in hot engine bays.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e1500 psi working pressure suitable for EFI and return-line applications.\u003c\/li\u003e\n  \u003cli\u003eTemperature range from -40°F to 250°F for wide environmental compatibility.\u003c\/li\u003e\n  \u003cli\u003e6061-T6 aluminum resists corrosion while staying lightweight.\u003c\/li\u003e\n  \u003cli\u003eDurable finish withstands vibration and mechanical stresses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat applications and vehicles use this fitting?\u003c\/h3\u003e\n\n\u003cp\u003eThis adapter is designed for any situation where a 6AN male line must connect to a 3\/8\" quick-disconnect female EFI port. Typical uses include fuel rails, LS swaps, transmission cooler lines, return lines and inline fuel sensors. Its compact profile makes it useful in tight engine bays and custom plumbing layouts.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFuel rails and EFI return fittings on performance engines.\u003c\/li\u003e\n  \u003cli\u003eLS engine swaps that require adapting AN hoses to factory quick-disconnects.\u003c\/li\u003e\n  \u003cli\u003eTransmission cooler and inline fuel sensor connections.\u003c\/li\u003e\n  \u003cli\u003eAftermarket fuel systems and custom plumbing projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and maintenance?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is straightforward for anyone familiar with AN fittings and EFI quick-disconnects: thread the 6AN male end into the hose or adapter, then snap the 3\/8\" female onto the mating EFI port. Occasional inspection for tightness and cleanliness is all that’s required; replace seals if you detect wear. This product ships as a two-piece set so you can service multiple ports or keep a spare on hand.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThread the 6AN male into your hose end or adapter until hand-tight, then torque per spec.\u003c\/li\u003e\n  \u003cli\u003eSnap the 3\/8\" quick-disconnect onto the EFI port until it clicks into place.\u003c\/li\u003e\n  \u003cli\u003eInspect periodically for contamination, corrosion, or thread damage.\u003c\/li\u003e\n  \u003cli\u003eReplace if sealing surfaces show nicks or deformation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: mechanics, engine builders and DIY enthusiasts who need a robust, leak-resistant way to connect 6AN lines to 3\/8\" EFI quick-disconnect ports. It’s especially useful for LS swap projects, aftermarket fuel systems, transmission cooler plumbing and any application requiring compact, high-pressure aluminum adapters. The two-piece pack provides value for installers replacing multiple fittings or keeping a spare for troubleshooting and quick repairs.\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 and ID sizes does this fitting use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It uses 6AN male threads (9\/16-18UNF) with a 3\/8\" internal diameter female quick-disconnect.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this fitting compatible with high-pressure EFI systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes; it’s rated to 1500 psi and temperature-rated from -40°F to 250°F for typical EFI applications.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"EVIL ENERGY","offers":[{"title":"Default Title","offer_id":67592688631993,"sku":"B0BNN8L31M","price":56.69,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/evil-energy-6an-to-3-8-quick-disconnect-front-view.jpg?v=1790567002","url":"https:\/\/redleafauto.ca\/products\/evil-energy-6an-male-to-3-8in-efi-quick-disconnect-adapter-2-pack-6061-t6-aluminum-1500-psi","provider":"Redleaf Auto","version":"1.0","type":"link"}