Aspaton 6AN 70in Stainless-Braided Transmission Cooler Line Kit with PTFE Liner & Adapter Pack

Aspaton's 70" 6AN stainless braided transmission cooler line kit is a complete replacement set engineered to route fluid, resist abrasion, and improve heat transfer for AOD, TR6060, 4L60E/4L80E, TH350 and similar transmissions.

This kit supplies two pre-cut 70-inch stainless-braided hoses with a selection of AN and NPT adapter fittings so you can connect an external cooler or reroute factory lines with durable, high-temperature components. The hoses blend a PTFE inner liner and braided stainless steel outer cover to resist wear, chemical exposure, and temperature extremes. The package includes multiple adapters to fit popular transmission ports and aftermarket chillers, letting hobbyists and professionals adapt to different vehicle hardlines and coolers without hunting for separate fittings.

Will this kit fit my vehicle with a 4L80E, 700R4, or TR6060 transmission?

Compatibility is broad thanks to the included adapters and the universal 6AN hose ends. The kit lists common transmissions such as C5/C6 AOD, 4L60E, 4L80E, 700R4, 200-4R, TR6060, TH350 and TH400 as compatible targets when using the proper fittings. Confirm thread types on your cooler and transmission ports before installation.

• Includes two 70" hoses with 3/8" inside diameter for flexible routing.
• Four 90° 6AN female-to-male adapters for tight connection angles.
• Multiple 6AN-to-NPT/NPS adapters to match common port threads.
• Works with many aftermarket and OEM coolers when matched with correct adapter.

How does the braided construction help under heavy use?

The combination of PTFE inner liner and braided stainless outer jacket improves resistance to abrasion, heat and chemical exposure versus rubber hose. That means the lines retain pressure integrity under load, tolerate higher operating temperatures, and last longer around exhaust, chassis edges, or sharp bends. The braid also helps dissipate heat more effectively than single-layer hoses.

• PTFE core for fluid compatibility and smooth flow.
• Stainless braid for cut, crush and abrasion resistance.
• Temperature range rated from -40°C to 150°C for varied conditions.
• Braid helps stabilize hose shape under pressure for consistent flow.

What adapters and hardware are included, and why are they useful?

The kit ships with a set of AN and pipe-thread adapters so you can convert 6AN hose ends to many transmission cooler port standards without buying extras. Adapters let you attach the hoses to angled ports, existing hardlines, or aftermarket coolers that use 1/4 NPT, 3/8 NPT, or 1/4 NPS threads. That flexibility reduces installation time and compatibility guessing.

• 4 × 90° 6AN female-to-male adapter fittings for angled connections.
• 4 × 6AN-to-1/4 NPT adapters and 2 × 6AN-to-3/8 NPT adapters included.
• 2 × 6AN-to-1/4 NPS adapters for additional thread compatibility.
• Hoses pre-cut to 70" length for most swap and routing scenarios.

How do I install these lines without professional tools?

Basic mechanical skills and common hand tools are usually enough: measure routing, choose the proper adapters, and tighten fittings with AN wrenches or flare nut tools. Avoid overtightening and support hoses with clamps away from heat and moving parts. If you lack confidence with fluid lines, a professional install is sensible to prevent leaks.

• Check thread type and sealant requirements for NPT/NPS adapters prior to assembly.
• Use hose clamps or P-clamps at mounting points to prevent chafing.
• Pressure-test or run the drivetrain and inspect for leaks before road use.
• Trim hose ends only if necessary and use proper cutting tools for clean PTFE cuts.

Who is this for: This Aspaton 6AN 70" transmission cooler line kit suits DIY mechanics, performance builders, and shops upgrading or replacing factory cooler lines. It is ideal when you need corrosion-resistant, high-temperature hoses with flexible adapter options to mate vintage or modern transmissions to external coolers. Choose this kit when you want a ready-made length, braided durability, and multiple fittings to adapt to common transmission ports without sourcing parts individually.