{"product_id":"evil-energy-an6-to-1-4-inch-npsm-adapter-black-2pc-6061-t6-aluminum-for-transmission-cooler-lines","title":"EVIL ENERGY AN6 to 1\/4-inch NPSM Adapter — Black 2pc, 6061-T6 Aluminium for Transmission Cooler Lines","description":"\u003cp\u003e\u003cstrong\u003eEVIL ENERGY AN6 male to 1\/4\" NPSM adapter is a CNC-machined aluminum fitting that converts AN6 (9\/16-18 UNF) male flare connections to 1\/4\"-18 NPSM thread for transmission cooler and fluid line installations.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you need a compact, corrosion-resistant adapter to bridge AN-style hose assemblies and the 1\/4\" NPSM ports commonly found on older transmissions and coolers, this 2-piece kit gives a simple, durable solution. Machined from 6061-T6 billet aluminum and finished in black, the adapters are made to withstand fuel, oil, and coolant exposure while minimizing weight and making routine line changes straightforward.\u003c\/p\u003e\n\n\u003ch3\u003eWhat vehicles and transmissions will these adapters fit?\u003c\/h3\u003e\n\u003cp\u003eThese adapters were engineered to match a wide range of pre-2007 GM and select manual\/automatic transmissions. Check your transmission’s cooler port thread spec before ordering; they are meant specifically for 1\/4\"-18 NPSM female ports pairing to AN6 male hose ends.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommonly compatible: TH350, TH400, 4L60E, 700R4, 200-4R.\u003c\/li\u003e\n  \u003cli\u003eAlso reported to fit: TR6060, AOD, 4R100, 4R70W and Corvette C5 applications.\u003c\/li\u003e\n  \u003cli\u003eDesigned for transmissions and aftermarket coolers with 1\/4\"-18 NPSM inlet\/outlet.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and leak-resistant are these aluminum adapters?\u003c\/h3\u003e\n\u003cp\u003eMachined from 6061-T6 billet aluminum, the fittings resist rust and corrosion while keeping weight low. The hex head design allows accurate torque control during installation, helping create a reliable seal when mated correctly to AN hose ends and NPSM ports.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaterial: high-strength 6061-T6 aluminum for corrosion resistance and lightness.\u003c\/li\u003e\n  \u003cli\u003eFinish: black anodized or coated surface to reduce wear and oxidation.\u003c\/li\u003e\n  \u003cli\u003eShape: precision hex head for secure wrench engagement and proper torqueing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use these with my fuel, oil, or coolant lines?\u003c\/h3\u003e\n\u003cp\u003eYes—these adapters are compatible with a variety of fluids commonly routed through transmission cooler lines, including hydraulic fluid, oil, fuel-compatible systems, and coolant when appropriate. Always confirm chemical compatibility and pressure ratings for your specific application before installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuitable media: transmission fluid, ATF, engine oil, certain fuel systems, and coolant where the fitting geometry matches.\u003c\/li\u003e\n  \u003cli\u003eInstallation: ensure thread sealant or correct sealing method per system requirements.\u003c\/li\u003e\n  \u003cli\u003ePressure: intended for typical transmission\/cooler line pressures—verify against system specs for high-pressure aftermarket setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what tools do I need?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable working on fluid lines. The CNC-machined hex head lets you tighten the adapter with a standard wrench; pairing with the correct AN hose end completes the connection with minimal fuss.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTools: standard wrench sized for the hex head, thread sealant if required by the port type.\u003c\/li\u003e\n  \u003cli\u003eProcess: hand-start threads, then wrench-tighten to factory or aftermarket torque spec.\u003c\/li\u003e\n  \u003cli\u003ePack included: two adapters per order to service both cooler lines or provide a spare.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: mechanics, hot-rodders, restorers, and DIY vehicle owners who need a compact adapter to marry AN6 lines with 1\/4\"-18 NPSM transmission or cooler ports. Choose this 2-piece EVIL ENERGY kit when you want lightweight, corrosion-resistant fittings that are easy to install and compatible with common transmission models and cooling systems. If your project requires different thread sizes or higher-pressure fittings, verify specs or consult a technician before purchase.\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 adapters reusable after removal?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 6061-T6 aluminum fittings can be reused if threads and sealing surfaces remain undamaged.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need thread sealant when installing into a transmission port?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use sealant only if the port manufacturer recommends it; many NPSM connections rely on metal-to-metal sealing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"EVIL ENERGY","offers":[{"title":"Default Title","offer_id":55165569532247,"sku":"B0CSPVJDFP","price":32.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/evil-energy-front-view-adapter-pair_c4515eec-61f7-4c97-b017-f2828d8383f8.jpg?v=1790355802","url":"https:\/\/britishgarage.co.uk\/products\/evil-energy-an6-to-1-4-inch-npsm-adapter-black-2pc-6061-t6-aluminum-for-transmission-cooler-lines","provider":"British Garage","version":"1.0","type":"link"}