{"product_id":"evil-energy-6an-to-1-4-npsm-transmission-cooler-adapter","title":"EVIL ENERGY 6AN Male Flare to 1\/4 inch NPSM Transmission Cooler Line Fittings Adapters Aluminum, Fits TH350 TH400 4L60E 700R4, Silver, 2PCS","description":"\u003cp\u003e---!@!start!@!---Specifications---!@!end!@!---\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003ctable class=\"specs-table\" style=\"width: 99.9523%; height: 274.394px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5996px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 19.5996px;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 19.5996px;\"\u003eEVIL ENERGY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5996px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 19.5996px;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 19.5996px;\"\u003e6061-T6 Aluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5996px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 19.5996px;\"\u003eFinish\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 19.5996px;\"\u003eAnodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5996px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 19.5996px;\"\u003eColor\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 19.5996px;\"\u003eSilver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5996px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 19.5996px;\"\u003eConnector Type\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 19.5996px;\"\u003eAN Flare Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5996px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 19.5996px;\"\u003eAN Side\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 19.5996px;\"\u003e6AN Male Flare (9\/16-18 UNF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5996px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 19.5996px;\"\u003eNPSM Side\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 19.5996px;\"\u003e1\/4-18 NPSM Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5996px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 19.5996px;\"\u003eSealing Method\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 19.5996px;\"\u003e37° flare seal on the 6AN side and NBR O-ring seal on the 1\/4-18 NPSM side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5996px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 19.5996px;\"\u003eDesign\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 19.5996px;\"\u003eCNC-machined, hex-shaped body for easy wrench installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5996px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 19.5996px;\"\u003eFluid Compatibility\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 19.5996px;\"\u003eFuel, oil, water, and other media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1992px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 39.1992px;\"\u003eTransmission Fitment\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 39.1992px;\"\u003ePre-2007 front \u0026amp; rear line ports — TH350, TH400, 4L60E, 700R4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5996px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 19.5996px;\"\u003ePackage Quantity\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 19.5996px;\"\u003e2 Adapter Fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5996px;\"\u003e\n\u003ctd style=\"width: 24.3702%; height: 19.5996px;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"width: 73.279%; height: 19.5996px;\"\u003eSpeedwow Tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e---!@!start!@!---Product Description---!@!end!@!---\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_1-_2.jpg?v=1784268387\" alt=\"EVIL ENERGY 6AN male flare to 1\/4-18 NPSM transmission cooler adapter fittings, silver, 2 pieces\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch2\u003eAbout this item\u003c\/h2\u003e\n\u003cp\u003eEVIL ENERGY 6AN Male Flare to 1\/4\" NPSM Transmission Cooler Line Fitting Adapters — CNC-machined from 6061-T6 aluminum with anodized finish. Designed to convert pre-2007 transmission cooler ports to 6AN flare connections for braided hose and AN plumbing upgrades. Includes 2 fittings.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"feature-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Conversion:\u003c\/strong\u003e 6AN Male Flare (9\/16-18 UNF) to 1\/4-18 NPSM Male — the most common size for TH350, TH400, 4L60E, and 700R4 transmission cooler line ports (pre-2007). Enables seamless AN braided hose plumbing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6061-T6 Aircraft Aluminum:\u003c\/strong\u003e Machined from solid billet, not cast or stamped. Silver anodized finish resists oil, rust, and corrosion for long-term under-chassis durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e37° Flare Seal:\u003c\/strong\u003e AN male side achieves a reliable, leak-free seal at the 37-degree flare cone angle — the industry standard for high-pressure fluid systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHex-Shaped Body:\u003c\/strong\u003e CNC-machined hex design allows easy tightening with a standard wrench. No special tools required for installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Fluid Compatible:\u003c\/strong\u003e Safe for transmission fluid, engine oil, fuel, water, and other automotive fluids. Not limited to transmission cooling applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment Guide — Read Before Ordering\u003c\/h3\u003e\n\u003ctable style=\"width: 99.9523%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 19.7467%;\"\u003eTransmission\u003c\/th\u003e\n\u003cth style=\"width: 47.1021%;\"\u003ePort Thread\u003c\/th\u003e\n\u003cth style=\"width: 15.9423%;\"\u003eYear Range\u003c\/th\u003e\n\u003cth style=\"width: 16.3046%;\"\u003eCompatible\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.7467%;\"\u003eTH350\u003c\/td\u003e\n\u003ctd style=\"width: 47.1021%;\"\u003e1\/4-18 NPSM\u003c\/td\u003e\n\u003ctd style=\"width: 15.9423%;\"\u003e1969–1986\u003c\/td\u003e\n\u003ctd style=\"width: 16.3046%;\"\u003e✅\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.7467%;\"\u003eTH400\u003c\/td\u003e\n\u003ctd style=\"width: 47.1021%;\"\u003e1\/4-18 NPSM\u003c\/td\u003e\n\u003ctd style=\"width: 15.9423%;\"\u003e1964–1990\u003c\/td\u003e\n\u003ctd style=\"width: 16.3046%;\"\u003e✅\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.7467%;\"\u003e4L60E \/ 700R4\u003c\/td\u003e\n\u003ctd style=\"width: 47.1021%;\"\u003e1\/4-18 NPSM\u003c\/td\u003e\n\u003ctd style=\"width: 15.9423%;\"\u003e1982–2006\u003c\/td\u003e\n\u003ctd style=\"width: 16.3046%;\"\u003e✅\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 19.7467%;\"\u003e4L80E\u003c\/td\u003e\n\u003ctd style=\"width: 47.1021%;\"\u003e1\/4-18 NPSM (different port design)\u003c\/td\u003e\n\u003ctd style=\"width: 15.9423%;\"\u003e1991–2006\u003c\/td\u003e\n\u003ctd style=\"width: 16.3046%;\"\u003e❌\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"price-reference\"\u003e⚠️ Always verify your transmission's port thread size before ordering. Measure with a thread pitch gauge if unsure. This fitting is NOT compatible with inverted flare (IF) ports — it seals via a 37° cone, not an inverted flare seat.\u003c\/p\u003e\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6AN Male Flare to 1\/4\" NPSM adapter fitting × \u003cstrong\u003e2\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eNBR Sealing O-Rings × 2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_3_f8137038-416b-4304-b680-23d2dcbf1e80.jpg?v=1784268387\" alt=\"6061-T6 aluminum 6AN transmission cooler adapters with NBR O-rings and anodized finish\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch2\u003e37° AN Flare Seal Design for Leak-Resistant Connections\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e6AN male flare side\u003c\/strong\u003e uses a standard \u003cstrong\u003e37° AN flare sealing surface\u003c\/strong\u003e to create a reliable metal-to-metal connection with compatible AN hose ends. The opposite \u003cstrong\u003e1\/4-18 NPSM male thread\u003c\/strong\u003e is designed for compatible transmission cooler ports, providing a direct conversion from factory cooler fittings to AN plumbing systems.\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_5_7988075f-7445-4608-8ced-fc233ccc6412.jpg?v=1784268387\" alt=\"6AN to 1\/4-18 NPSM adapter for transmission fluid, oil and compatible automotive fluids\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch2\u003eDesigned for Automotive Fluid System Applications\u003c\/h2\u003e\n\u003cp\u003eDesigned primarily for \u003cstrong\u003etransmission cooler line applications\u003c\/strong\u003e, this adapter provides a secure connection solution for compatible automotive fluid systems. The corrosion-resistant aluminum construction is suitable for applications involving transmission fluid, oil, and other automotive fluids when the fitting specifications match the system requirements.\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_2_32cbbc83-e29b-481a-8c81-896e2b5dd66e.jpg?v=1784268387\" alt=\"6AN 9\/16-18 UNF 37-degree flare to 1\/4-18 NPSM O-ring sealing diagram\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003carticle\u003e\n\u003ch2\u003eHow Should the Transmission Cooler Adapter Be Installed?\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify the port first:\u003c\/strong\u003e Confirm that the transmission cooler port uses a compatible 1\/4-18 NPSM thread and accepts the adapter's O-ring sealing style.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect the O-ring:\u003c\/strong\u003e Make sure the O-ring is correctly seated and free from cuts, flattening, dirt, or twisting before installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStart the fitting by hand:\u003c\/strong\u003e Thread the adapter into the port by hand to reduce the risk of cross-threading the transmission case.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTighten from the hex body:\u003c\/strong\u003e Use the machined hex section and follow the transmission or product-specific torque requirement. Do not apply an unverified universal torque value.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect a matching hose end:\u003c\/strong\u003e Attach a 6AN female 37° flare hose end. Do not apply thread tape to the AN flare sealing surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect after operation:\u003c\/strong\u003e Restore the correct transmission fluid level, run the system, and inspect both cooler ports and hose connections for seepage.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eRoute cooler hoses away from exhaust components, sharp edges, and moving parts. For a complete system, compare compatible \u003cspan style=\"text-decoration: underline;\"\u003e\u003ca href=\"\/collections\/transmission-oil-coolers\"\u003e\u003cstrong style=\"color: rgb(255, 42, 0); text-decoration: underline;\"\u003etransmission oil cooler kits\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e before selecting the remaining hose and cooler-side fittings.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose EVIL ENERGY Transmission Fittings?\u003c\/h2\u003e\n\u003cp\u003eEVIL ENERGY is a direct manufacturer of performance fluid system components — no middlemen, no markup chains. Our transmission cooler fittings are CNC-machined from 6061-T6 billet aluminum in our own facility, anodized in-house for consistent color and corrosion protection. Every fitting thread is cut to SAE specification for a drip-free seal at the 37° flare cone. Backed by US-based FBA inventory with fast Prime shipping and a dedicated support team. Whether you're converting a street car to AN braided lines or building a full race transmission cooler setup, EVIL ENERGY delivers pro-grade reliability at direct-factory pricing.\u003c\/p\u003e\n\u003c\/article\u003e","brand":"EVILENERGY","offers":[{"title":"Default Title","offer_id":46211661398152,"sku":"EVKT10197S1SR-2-AMZ1","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/1_6.jpg?v=1784268504","url":"https:\/\/www.ievilenergy.com\/products\/evil-energy-6an-to-1-4-npsm-transmission-cooler-adapter","provider":"EVILENERGY","version":"1.0","type":"link"}