{"product_id":"evil-energy-6an-to-3-8-quick-disconnect-fuel-rail-adapter-2pc-aluminum-6061-t6-1500-psi","title":"EVIL ENERGY 6AN to 3\/8\" Quick-Disconnect Fuel Rail Adapter — 2pc Aluminum 6061-T6, 1500 PSI","description":"\u003cp\u003e\u003cstrong\u003eEVIL ENERGY 6AN male to 3\/8\" quick-disconnect female EFI fuel rail fitting is an aluminum, high-pressure adapter that turns a 6AN threaded feed into a 3\/8\" quick-disconnect line for EFI rails and fuel-system components.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis pair of fittings is engineered for fuel-system work on performance and retrofit projects. Machined from 6061-T6 aluminum and sealing at a 37° flare, these adapters are built to handle high pressure while minimizing leaks. They’re commonly used where a bulkhead or fuel rail needs a convenient quick-disconnect connection to sensors, return lines, or aftermarket hoses during engine swaps and service routines.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these fittings prevent leaks in a high-pressure EFI system?\u003c\/h3\u003e\n\u003cp\u003eThe fittings use a 37° flare sealing geometry that matches industry-standard AN flare practice, producing a reliable metal-to-metal seal when torqued correctly. The precision threads and flare face reduce the chance of seepage under repeated cycling.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e37° flare angle for a tight metal-to-metal seal\u003c\/li\u003e\n\u003cli\u003e9\/16-18UNF 6AN thread sizing for proper mating\u003c\/li\u003e\n\u003cli\u003e6061-T6 aluminum resists corrosion while maintaining dimensional stability\u003c\/li\u003e\n\u003cli\u003eRated to 1500 psi to suit many EFI applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these adapters fit my existing 6AN fuel rail and 3\/8\" quick-disconnect hose?\u003c\/h3\u003e\n\u003cp\u003eYes, these adapters are sized to convert a standard 6AN male thread (9\/16-18UNF) to a 3\/8\" quick-disconnect female interface. Confirm that your hose or quick-disconnect coupling is the standard 3\/8\" type used in fuel systems to ensure compatibility.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThread: 6AN (9\/16-18UNF) male\u003c\/li\u003e\n\u003cli\u003eQuick-disconnect inner diameter: 3\/8\" female\u003c\/li\u003e\n\u003cli\u003eIntended for EFI rails, sensors, cooler lines, and return plumbing\u003c\/li\u003e\n\u003cli\u003eSold in a 2-piece set for matching both inlet and outlet needs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat operating conditions and materials are these fittings rated for?\u003c\/h3\u003e\n\u003cp\u003eManufactured from aircraft-grade 6061-T6 aluminum, the adapters combine light weight with strong mechanical properties. They are tested for automotive fuel-service ranges and can tolerate typical engine-bay temperatures and pressures when installed correctly.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: 6061-T6 aluminum alloy for strength and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eWorking pressure rating: up to 1500 psi under correct installation\u003c\/li\u003e\n\u003cli\u003eTemperature range: -40°F to 250°F suitable for most engine compartments\u003c\/li\u003e\n\u003cli\u003eFlare-sealed design avoids rubber seals that can degrade in fuel contact\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and maintain these fuel rail fittings?\u003c\/h3\u003e\n\u003cp\u003eInstall by matching the 6AN threads to the fuel rail or adapter and tighten to the manufacturer’s recommended torque for AN fittings to avoid thread or flare damage. Periodic inspection for tightness and any signs of abrasion or fuel odor is a simple preventive step.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHand-start threads, then torque to AN specifications to avoid over-tightening\u003c\/li\u003e\n\u003cli\u003eInspect the 37° flare face for nicks or debris before final assembly\u003c\/li\u003e\n\u003cli\u003eCheck fittings after initial run-in and periodically for seepage or looseness\u003c\/li\u003e\n\u003cli\u003eReplace if threads or flare faces become damaged\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? These EVIL ENERGY adapters are aimed at mechanics, DIY tuners, and performance enthusiasts performing EFI conversions, LS swaps, or custom fuel-system plumbing. If you need a compact, reusable transition from a 6AN threaded port to a 3\/8\" quick-disconnect line for sensors, return plumbing, or service access—especially in high-pressure environments—this 2-pack provides a durable, serviceable solution.\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: Are these fittings compatible with ethanol-blend fuels?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Made from 6061-T6 aluminum with a metal flare seal, they are suitable for common ethanol-blend fuels; inspect regularly for wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I reuse the fittings after disconnecting?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The aluminum AN flare and quick-disconnect are reusable if flare faces and seals remain undamaged and clean.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"EVIL ENERGY","offers":[{"title":"Default Title","offer_id":48087060250782,"sku":"B0BNN8L31M","price":29.88,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/evil-energy-front-packaging-fitments.jpg?v=1785915798","url":"https:\/\/northtrailauto.ca\/products\/evil-energy-6an-to-3-8-quick-disconnect-fuel-rail-adapter-2pc-aluminum-6061-t6-1500-psi","provider":"North Trail Auto","version":"1.0","type":"link"}