{"product_id":"evil-energy-an6-to-1-4-npsm-transmission-cooler-adapter-black-2pc-6061-t6-cnc-aluminum","title":"EVIL ENERGY AN6 to 1\/4\" NPSM Transmission Cooler Adapter Black 2PC — 6061-T6 CNC Aluminum","description":"\u003cp\u003e\u003cstrong\u003eAn AN6 male (9\/16-18 UNF) to 1\/4\"-18 NPSM transmission cooler adapter — a CNC-machined 6061-T6 aluminum two-piece set designed to convert modern AN6 lines to older 1\/4\" NPSM transmission ports.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you need to connect AN-style braided lines or aftermarket hose assemblies to factory or legacy transmission cooler ports, this EVIL ENERGY adapter pair provides a compact, corrosion-resistant solution. Machined from lightweight billet aluminum and finished in black, the fittings let you adapt AN6 male flare connections to older 1\/4\" NPSM female threads commonly found on transmissions such as TH350, TH400 and many automatic transmissions before 2007.\u003c\/p\u003e\n\n\u003ch3\u003eWill these adapters fit my transmission’s cooler ports?\u003c\/h3\u003e\n\u003cp\u003eThey’re specifically sized to mate AN6 (9\/16-18 UNF) male flare connections with 1\/4\"-18 NPSM female ports. The adapters were designed for the front and rear transmission lines used on numerous earlier automatic transmissions and are a direct fit where 1\/4\" NPSM ports are present.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThread conversion: AN6 male to 1\/4\"-18 NPSM female.\u003c\/li\u003e\n  \u003cli\u003eFits legacy transmissions like TH350, TH400, 700R4, 4L60E, AOD and related models.\u003c\/li\u003e\n  \u003cli\u003eSold as a 2-piece set for inlet and outlet lines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and leak-resistant are these fittings?\u003c\/h3\u003e\n\u003cp\u003eManufactured from 6061-T6 billet aluminum and CNC-machined for consistent tolerances, the adapters resist rust and corrosion while remaining lightweight. Proper installation with compatible seals or thread tape will produce a reliable connection for fuel, oil, water and transmission fluid applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaterial: heat-treated 6061-T6 aluminum for strength and corrosion resistance.\u003c\/li\u003e\n  \u003cli\u003ePrecision CNC machining reduces thread mismatch and improves sealing surfaces.\u003c\/li\u003e\n  \u003cli\u003eCompatible with transmission fluid, oil, fuel and coolant media when installed correctly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install an AN6 to 1\/4\" NPSM adapter in my cooling line?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: thread the 1\/4\" NPSM end into the transmission port and attach your AN6 hose or fitting to the male flare. Use a suitable sealing method for NPSM threads—such as PTFE tape or an appropriate sealant—and tighten to the manufacturer’s torque recommendations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStep 1: Clean threads and port seating area before assembly.\u003c\/li\u003e\n  \u003cli\u003eStep 2: Apply PTFE tape or thread sealant compatible with transmission fluid.\u003c\/li\u003e\n  \u003cli\u003eStep 3: Hand-start threads, then tighten with a wrench to proper torque; avoid over-tightening.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and systems commonly accept this adapter?\u003c\/h3\u003e\n\u003cp\u003eThe adapter is intended for automatic transmissions and their cooling lines found on many American and aftermarket setups prior to 2007. It’s a common choice for restomods, performance swaps and repairs where AN fittings are preferred but the transmission still uses older NPSM ports.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect compatibility: TH350, TH400, 700R4, 4L60E, 200-4R, AOD, TR-6060, 4R100, 4R70W.\u003c\/li\u003e\n  \u003cli\u003eAlso used in C5 applications and custom cooler loop builds.\u003c\/li\u003e\n  \u003cli\u003eUseful in conversions where braided AN hoses are installed on stock transmissions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This EVIL ENERGY adapter pair is suited to mechanics, restorers and performance enthusiasts who need a reliable, lightweight solution to join AN6 lines to older 1\/4\" NPSM transmission ports. If you’re upgrading cooling lines, doing a transmission service, or converting to AN hose for durability and appearance, the two-piece aluminum adapters give a tidy, corrosion-resistant interface for a wide range of transmissions and aftermarket setups.\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: Do these adapters work with transmission fluid?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. They are compatible with transmission fluid when properly sealed and tightened to spec.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these fittings reusable after removal?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 6061-T6 aluminum construction allows reuse if threads and sealing surfaces remain undamaged.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"EVIL ENERGY","offers":[{"title":"Default Title","offer_id":48086886219934,"sku":"B0CSPVJDFP","price":31.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/evil-energy-adapter-front-view.jpg?v=1785909118","url":"https:\/\/northtrailauto.ca\/products\/evil-energy-an6-to-1-4-npsm-transmission-cooler-adapter-black-2pc-6061-t6-cnc-aluminum","provider":"North Trail Auto","version":"1.0","type":"link"}