<\/p>\n
Product Description<\/h2>\n<\/p>\n![\"](\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\")
<\/div>\nAbout this item<\/h2>\n
6AN Male Flare to 1\/4″ NPSM Transmission Cooler Line Fitting Adapters \u2014 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.<\/p>\n
Key Features<\/h2>\n\n- \nPrecision Conversion:<\/strong> 6AN Male Flare (9\/16-18 UNF) to 1\/4-18 NPSM Male \u2014 the most common size for TH350, TH400, 4L60E, and 700R4 transmission cooler line ports (pre-2007). Enables seamless AN braided hose plumbing.<\/li>\n
- \n6061-T6 Aircraft Aluminum:<\/strong> Machined from solid billet, not cast or stamped. Silver anodized finish resists oil, rust, and corrosion for long-term under-chassis durability.<\/li>\n
- \n37\u00b0 Flare Seal:<\/strong> AN male side achieves a reliable, leak-free seal at the 37-degree flare cone angle \u2014 the industry standard for high-pressure fluid systems.<\/li>\n
- \nHex-Shaped Body:<\/strong> CNC-machined hex design allows easy tightening with a standard wrench. No special tools required for installation.<\/li>\n
- \nMulti-Fluid Compatible:<\/strong> Safe for transmission fluid, engine oil, fuel, water, and other automotive fluids. Not limited to transmission cooling applications.<\/li>\n<\/ul>\n
Fitment Guide \u2014 Read Before Ordering<\/h3>\n
\n\n\nTransmission<\/th>\n Port Thread<\/th>\n Year Range<\/th>\n Compatible<\/th>\n<\/tr>\n<\/thead>\n \n\nTH350<\/td>\n 1\/4-18 NPSM<\/td>\n 1969\u20131986<\/td>\n \u2705<\/td>\n<\/tr>\n \nTH400<\/td>\n 1\/4-18 NPSM<\/td>\n 1964\u20131990<\/td>\n \u2705<\/td>\n<\/tr>\n \n4L60E \/ 700R4<\/td>\n 1\/4-18 NPSM<\/td>\n 1982\u20132006<\/td>\n \u2705<\/td>\n<\/tr>\n \n4L80E<\/td>\n 1\/4-18 NPSM (different port design)<\/td>\n 1991\u20132006<\/td>\n \u274c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u26a0\ufe0f 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 \u2014 it seals via a 37\u00b0 cone, not an inverted flare seat.<\/p>\n
Package Contents<\/h3>\n\n- 6AN Male Flare to 1\/4″ NPSM adapter fitting \u00d7 2<\/strong>\n<\/li>\n
- NBR Sealing O-Rings \u00d7 2<\/li>\n<\/ul>\n<\/div>\n
37\u00b0 AN Flare Seal Design for Leak-Resistant Connections<\/h2>\n
The 6AN male flare side<\/strong> uses a standard 37\u00b0 AN flare sealing surface<\/strong> to create a reliable metal-to-metal connection with compatible AN hose ends. The opposite 1\/4-18 NPSM male thread<\/strong> is designed for compatible transmission cooler ports, providing a direct conversion from factory cooler fittings to AN plumbing systems.<\/p>\n<\/div>\nDesigned for Automotive Fluid System Applications<\/h2>\n
Designed primarily for transmission cooler line applications<\/strong>, 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.<\/p>\n<\/div>\n\nHow Should the Transmission Cooler Adapter Be Installed?<\/h2>\n
![\"](\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_1-_2.jpg?v=1784268387\")
<\/div>\nAbout this item<\/h2>\n
6AN Male Flare to 1\/4″ NPSM Transmission Cooler Line Fitting Adapters \u2014 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.<\/p>\n
Key Features<\/h2>\n\n- \nPrecision Conversion:<\/strong> 6AN Male Flare (9\/16-18 UNF) to 1\/4-18 NPSM Male \u2014 the most common size for TH350, TH400, 4L60E, and 700R4 transmission cooler line ports (pre-2007). Enables seamless AN braided hose plumbing.<\/li>\n
- \n6061-T6 Aircraft Aluminum:<\/strong> Machined from solid billet, not cast or stamped. Silver anodized finish resists oil, rust, and corrosion for long-term under-chassis durability.<\/li>\n
- \n37\u00b0 Flare Seal:<\/strong> AN male side achieves a reliable, leak-free seal at the 37-degree flare cone angle \u2014 the industry standard for high-pressure fluid systems.<\/li>\n
- \nHex-Shaped Body:<\/strong> CNC-machined hex design allows easy tightening with a standard wrench. No special tools required for installation.<\/li>\n
- \nMulti-Fluid Compatible:<\/strong> Safe for transmission fluid, engine oil, fuel, water, and other automotive fluids. Not limited to transmission cooling applications.<\/li>\n<\/ul>\n
Fitment Guide \u2014 Read Before Ordering<\/h3>\n
\n\n\nTransmission<\/th>\n Port Thread<\/th>\n Year Range<\/th>\n Compatible<\/th>\n<\/tr>\n<\/thead>\n \n\nTH350<\/td>\n 1\/4-18 NPSM<\/td>\n 1969\u20131986<\/td>\n \u2705<\/td>\n<\/tr>\n \nTH400<\/td>\n 1\/4-18 NPSM<\/td>\n 1964\u20131990<\/td>\n \u2705<\/td>\n<\/tr>\n \n4L60E \/ 700R4<\/td>\n 1\/4-18 NPSM<\/td>\n 1982\u20132006<\/td>\n \u2705<\/td>\n<\/tr>\n \n4L80E<\/td>\n 1\/4-18 NPSM (different port design)<\/td>\n 1991\u20132006<\/td>\n \u274c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\u26a0\ufe0f 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 \u2014 it seals via a 37\u00b0 cone, not an inverted flare seat.<\/p>\n
Package Contents<\/h3>\n\n- 6AN Male Flare to 1\/4″ NPSM adapter fitting \u00d7 2<\/strong>\n<\/li>\n
- NBR Sealing O-Rings \u00d7 2<\/li>\n<\/ul>\n<\/div>\n
37\u00b0 AN Flare Seal Design for Leak-Resistant Connections<\/h2>\n
The 6AN male flare side<\/strong> uses a standard 37\u00b0 AN flare sealing surface<\/strong> to create a reliable metal-to-metal connection with compatible AN hose ends. The opposite 1\/4-18 NPSM male thread<\/strong> is designed for compatible transmission cooler ports, providing a direct conversion from factory cooler fittings to AN plumbing systems.<\/p>\n<\/div>\nDesigned for Automotive Fluid System Applications<\/h2>\n
Designed primarily for transmission cooler line applications<\/strong>, 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.<\/p>\n<\/div>\n\nHow Should the Transmission Cooler Adapter Be Installed?<\/h2>\n
Fitment Guide \u2014 Read Before Ordering<\/h3>\n
| Transmission<\/th>\n | Port Thread<\/th>\n | Year Range<\/th>\n | Compatible<\/th>\n<\/tr>\n<\/thead>\n |
|---|---|---|---|
| TH350<\/td>\n | 1\/4-18 NPSM<\/td>\n | 1969\u20131986<\/td>\n | \u2705<\/td>\n<\/tr>\n |
| TH400<\/td>\n | 1\/4-18 NPSM<\/td>\n | 1964\u20131990<\/td>\n | \u2705<\/td>\n<\/tr>\n |
| 4L60E \/ 700R4<\/td>\n | 1\/4-18 NPSM<\/td>\n | 1982\u20132006<\/td>\n | \u2705<\/td>\n<\/tr>\n |
| 4L80E<\/td>\n | 1\/4-18 NPSM (different port design)<\/td>\n | 1991\u20132006<\/td>\n | \u274c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u26a0\ufe0f 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 \u2014 it seals via a 37\u00b0 cone, not an inverted flare seat.<\/p>\n Package Contents<\/h3>\n![\"6061-T6](\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_3_f8137038-416b-4304-b680-23d2dcbf1e80.jpg?v=1784268387\") <\/div>\n37\u00b0 AN Flare Seal Design for Leak-Resistant Connections<\/h2>\nThe 6AN male flare side<\/strong> uses a standard 37\u00b0 AN flare sealing surface<\/strong> to create a reliable metal-to-metal connection with compatible AN hose ends. The opposite 1\/4-18 NPSM male thread<\/strong> is designed for compatible transmission cooler ports, providing a direct conversion from factory cooler fittings to AN plumbing systems.<\/p>\n Designed primarily for transmission cooler line applications<\/strong>, 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.<\/p>\n |
![\"6AN](\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_5_7988075f-7445-4608-8ced-fc233ccc6412.jpg?v=1784268387\")
<\/div>\n![\"6AN](\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_2_32cbbc83-e29b-481a-8c81-896e2b5dd66e.jpg?v=1784268387\")
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