{"product_id":"6an-ptfe-transmission-line-kit-7ft-gm-4l60-700r4-th350-th400","title":"EVIL ENERGY 6AN PTFE Transmission Line Kit 7FT for 4L60 700R4 TH350 TH400 | PTFE Inner Tube with 304 Stainless Steel Braid and Nylon Cover, 3Design for High Heat, Chemical Resistance \u0026 Durability","description":"\u003cp\u003e---!@!start!@!---Specifications---!@!end!@!---\u003c\/p\u003e\n\u003ch2\u003e6AN PTFE Transmission Oil Cooler Line Kit Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 568.42px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"text-align: left; height: 19.6007px;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: left; height: 19.6007px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"height: 19.6007px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6007px;\"\u003eEVIL ENERGY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e\u003cstrong\u003eTransmission Oil Cooler Kit Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e2 × 7FT 6AN PTFE hose + swivel hose ends + adapter fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e\u003cstrong\u003eTransmission Oil Cooler Hose Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e6AN (ID: 0.31 inch \/ 8mm, OD: 0.45 inch \/ 11.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e\u003cstrong\u003eTransmission Oil Cooler Hose Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e7FT (2.13m) per hose, 14FT total — cut to length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e\u003cstrong\u003eAssembly\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003eCut-to-length; reusable swivel hose ends, no crimping press required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e\u003cstrong\u003eTransmission Line Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003ePTFE inner tube + 304 stainless steel braid + braided nylon outer cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e\u003cstrong\u003eTransmission Line Construction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e3-layer reinforced design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e\u003cstrong\u003eTransmission Line Working Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e1500 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e\u003cstrong\u003eTransmission Line Burst Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e4500 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e\u003cstrong\u003eTransmission Line Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e-76 °F to 446 °F (-60 °C to 230 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e\u003cstrong\u003eTransmission Line Min Bend Radius\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e3.5 inch (88.9mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.4028px;\"\u003e\n\u003ctd style=\"height: 78.4028px;\"\u003e\u003cstrong\u003eTransmission Line Compatible Fluid\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 78.4028px;\"\u003ePrimary: Transmission fluid, engine oil, hydraulic steering fluid\u003cbr\u003eAdditional compatible fluids: E85, racing fuel, diesel (hose material only, not for fuel system assembly)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"height: 19.6007px;\"\u003e\u003cstrong\u003eCompatible Transmissions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 19.6007px;\"\u003eGM 4L60, 700R4, TH350, TH400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e\u003cstrong\u003eTransmission Port Thread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 39.2014px;\"\u003e1\/4\"-18 NPSM straight thread (not tapered NPT) — confirm before ordering adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e---!@!start!@!---Description---!@!end!@!---\u003c\/p\u003e\n\u003ch2\u003eAbout this item\u003c\/h2\u003e\n\u003cp\u003eWorried about heat and chemical breakdown in your transmission lines? This EVIL ENERGY 6AN PTFE \u003cstrong\u003etransmission oil cooler line\u003c\/strong\u003e kit delivers a 1500 PSI-rated, PTFE-lined hose with 304 stainless braid and nylon cover for GM 4L60, 700R4, TH350 and TH400 builds. Two 7FT lengths let you plumb both the feed and return runs from one \u003cstrong\u003etransmission oil cooler kit\u003c\/strong\u003e, cut to fit your own chassis and cooler position.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_01_a9881b46-6b77-4fad-bf43-6d0276d8e86c.jpg?v=1786011489\" alt=\"EVIL ENERGY 6AN PTFE transmission oil cooler line kit with swivel hose ends and adapter fittings\"\u003e\u003c\/p\u003e\n\u003ch3\u003eWhere is this 6AN transmission oil cooler hose applied?\u003c\/h3\u003e\n\u003cp\u003eUse this \u003cstrong\u003etransmission oil cooler hose\u003c\/strong\u003e on GM 4L60, 700R4, TH350 and TH400 transmissions wherever a chemical-resistant, high-heat connection between the transmission and an external cooler is required — hot rod and muscle car builds, engine swaps, track cars, and tow rigs adding an auxiliary core. The factory hard line on these transmissions is 3\/8\" OD, which corresponds directly to -6AN, so this hose matches the flow the \u003cstrong\u003eautomatic transmission oil cooler\u003c\/strong\u003e circuit was designed around rather than over- or under-sizing it. At 7FT per length there is enough hose for a front-mounted cooler with routing slack to spare.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_03_09e14855-1dc0-4f3c-9b84-695a2a44e782.jpg?v=1786011488\" alt=\"6AN PTFE transmission oil cooler hose cutaway showing PTFE liner, 304 stainless braid and nylon outer cover\"\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy PTFE + 304 stainless + nylon?\u003c\/h3\u003e\n\u003cp\u003eRubber and push-lock hose absorb ATF over time, then swell, harden and eventually weep at the barb — the same aging that ruins factory lines. The PTFE inner tube here is chemically inert: it resists nearly all automotive fluids including E85 and race fuel, does not swell, and does not go brittle from years of heat cycling. The 304 stainless steel braid holds 1500 PSI working and 4500 PSI burst pressure and keeps the line from ballooning when hot. The braided nylon outer cover handles abrasion where the line passes near headers, the crossmember or the frame. Together they perform from -76 °F to 446 °F, well beyond the point where a 250 °F-rated \u003cstrong\u003etransmission oil cooler hose\u003c\/strong\u003e starts to fail.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_02_16751cf4-d177-4990-9247-521d07c8689f.jpg?v=1786011489\" alt=\"Swivel hose ends and transmission oil cooler fittings included in the 6AN PTFE line kit\"\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat thread do TH350, TH400, 700R4 and 4L60 cooler ports use?\u003c\/h3\u003e\n\u003cp\u003eThe case ports are 1\/4\"-18 NPSM — a straight thread that seals against a washer, not tapered NPT. This catches out a lot of builders, because NPT looks similar and will start to thread in, then wedge as it tightens and risk cracking the case. NPSM torques to roughly 25 ft-lb against its sealing washer. Start every fitting by hand and stop as soon as it feels tight. Some pre-1976 TH400s have a 5\/16\" inverted flare adapter already installed; remove it and the NPSM port is underneath.\u003c\/p\u003e\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2 × 7FT 6AN PTFE transmission oil cooler hose\u003c\/li\u003e\n\u003cli\u003eSwivel hose ends\u003c\/li\u003e\n\u003cli\u003eAdapter fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_05_6de421a4-1d7d-4339-992a-07bb60411798.jpg?v=1786011488\" alt=\"What is in the box: two 7FT 6AN PTFE transmission cooler hoses with swivel ends and adapters\"\u003e\u003c\/p\u003e\n\u003carticle\u003e\n\u003ch2\u003eHow to Install a Transmission Oil Cooler and Cooler Lines\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/A_04_ce3a7687-4916-47b8-a441-4d91bc28f647.jpg?v=1786011488\" alt=\"Correct installation location diagram showing transmission oil cooler lines routed between the transmission and the transmission cooler\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe hose runs between the transmission and the transmission cooler — that single connection is the whole job. Before you \u003cstrong\u003einstall transmission oil cooler\u003c\/strong\u003e plumbing, identify the two cooler ports on the case. The forward port is the outlet carrying hot fluid toward the cooler; the rear port is the return. Getting these backwards is the most common mistake in a first-time \u003cstrong\u003etransmission oil cooler installation\u003c\/strong\u003e, so mark them before anything comes apart.\u003c\/p\u003e\n\u003ch3\u003eTransmission oil cooler installation instructions\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount the cooler.\u003c\/strong\u003e Position it ahead of the radiator or condenser where it gets clean airflow, and secure it to solid structure rather than to the radiator core itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit the case adapters.\u003c\/strong\u003e Thread the 6AN to 1\/4\"-18 NPSM adapters into both ports with their sealing washers, by hand first, then to roughly 25 ft-lb.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure the routing.\u003c\/strong\u003e Run a length of string along the exact path each hose will follow. Add about 10% for slack, and remember the 3.5\" minimum bend radius — every direction change consumes length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssemble and cut the hoses.\u003c\/strong\u003e Tape the cut point so the braid cannot flare, cut square, blow the liner clean, then fit the sockets and olives. This is the core of \u003cstrong\u003ehow to install transmission oil cooler lines\u003c\/strong\u003e correctly — a clean square cut is what makes the seal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoute and secure.\u003c\/strong\u003e Keep the lines clear of headers, exhaust, steering components and moving suspension. Add cushioned separator clamps every 12-18 inches so nothing chafes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFill and check.\u003c\/strong\u003e Top off with fresh ATF, run the engine through the gears, then check every fitting for weeps after the first full heat cycle and again after the first drive.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eMost questions about \u003cstrong\u003ehow to install automatic transmission oil cooler\u003c\/strong\u003e plumbing come down to two things: confirming the thread type at the case, and deciding whether to keep the radiator cooler in the loop. Keep it in most builds — it warms fluid on cold starts and does more cooling work than people expect. The standard path is transmission out, through the radiator cooler, then through the auxiliary cooler, then back to the transmission.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose the EVIL ENERGY 6AN 7FT PTFE Transmission Oil Cooler Kit?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGM 4L60 \/ 700R4 \/ TH350 \/ TH400 Fitment:\u003c\/strong\u003e Sized to -6AN, matching the 3\/8\" OD factory line these transmissions were designed around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePTFE + Stainless + Nylon Build:\u003c\/strong\u003e PTFE liner for chemical resistance, 304 stainless braid for 1500 PSI strength, nylon cover for abrasion and heat protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo 7FT Lengths:\u003c\/strong\u003e Enough hose for both the feed and return runs, cut to fit your chassis instead of working around fixed-length lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable Swivel Ends:\u003c\/strong\u003e Assemble by hand with ordinary tools — this \u003cstrong\u003etransmission oil cooler installation kit\u003c\/strong\u003e needs no crimping press, and the ends can be re-clocked if routing changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt to Outlast Rubber:\u003c\/strong\u003e No swelling, no hardening, no weeping barbs — the failure modes that make \u003cstrong\u003etransmission oil cooler repair\u003c\/strong\u003e a recurring job on rubber hose.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/article\u003e","brand":"EVILENERGY","offers":[{"title":"Default Title","offer_id":46278950256776,"sku":"EVBWG0001002","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/EVIL-ENERGY-6AN-PTFE-Transmission-Line-Kit-7FT-for-4L60-700R4-TH350-TH400-_-PTFE-Inner-Tube-with-304-Stainless-Steel-Braid-and-Nylon-Cover_-3Design-for-High-Heat_-Chemical-Resistance-_-Dura-170034395.jpg?v=1786010394","url":"https:\/\/www.ievilenergy.com\/products\/6an-ptfe-transmission-line-kit-7ft-gm-4l60-700r4-th350-th400","provider":"EVILENERGY","version":"1.0","type":"link"}