SJDYYMX 6AN 70" Stainless Braided PTFE Transmission Cooler Hose Kit — Universal GM & Ford, Includes Billet Adapters

SJDYYMX 6AN 70" stainless braided PTFE hose kit delivers a durable, universal transmission fluid cooler line solution for GM and Ford vehicles that require AN6 fittings.

This kit pairs stainless-steel braid with a PTFE inner liner and includes multiple billet adaptors so you can add or replace transmission cooler lines for towing, everyday driving, or performance use. It’s built to resist corrosion, reduce leaks, and route easily around tight engine bays. The package covers a wide range of transmissions including TH350, TH400, 4L60E, 4L80E, 700R4, 200-4R, TR6060, AOD, 4R100, 4R70W and C5, and comes with convenient adapter fittings to simplify installation.

Will this hose kit fit my GM or Ford transmission?

The SJDYYMX kit is designed as a universal AN6 solution for many popular transmissions. Included adaptors let you connect AN6 flared lines to 1/4" NPT, 3/8" NPT, and several factory-style ports so it adapts to common OEM plumbing without custom fabrication.

• Compatible with TH350, TH400, 4L60E, 4L80E, 700R4, 200-4R, TR6060, AOD, 4R100, 4R70W and C5.
• Two 70" stainless braided PTFE hoses (3/8" I.D.) for flexible routing.
• Billet adaptors: 6AN to 1/4" NPT (x4), 6AN to 3/8" NPT (x2), inverted 90° 6AN fittings (x4), plus two 4L80E-specific adapters.

How does the build quality protect my transmission?

The hose combines a smooth PTFE liner with a stainless-steel outer braid for chemical resistance and abrasion protection. That layering reduces permeation and holds up to heat and road debris better than plain rubber lines.

• PTFE inner liner resists fluid breakdown and prevents swelling.
• Stainless braid resists corrosion and adds crush/abrasion protection.
• Billet fittings create a stronger, leak-resistant threaded connection.

How easy is the kit to install and route in tight engine bays?

The 70" hose length gives ample reach for many engine bay layouts, and the included 90° inverted flare adaptors help with clearance and clean routing. You can attach the AN fittings to the supplied adaptors without special hose assembly tools, keeping installation accessible for a competent DIYer or a professional shop.

• Long 70" hoses simplify routing around accessories and frames.
• 90° fittings reduce stress at tight bends and avoid kinks.
• Adapter assortment eliminates the need to source multiple fittings separately.

What performance or maintenance benefits should I expect?

Using dedicated stainless/PTFE cooler lines improves fluid containment and longevity of cooling components. While not a replacement for a properly sized external cooler, this kit helps maintain fluid integrity and reduces the chance of leak-related failures.

• Enhances cooling circuit durability and leak resistance.
• Useful for towing, heavy use, and higher-temperature conditions.
• Saves time by providing a complete hose-and-adaptor solution in one kit.

Who this is for: This SJDYYMX kit is aimed at vehicle owners upgrading transmission cooling for towing, heavy loads, or improved reliability—DIY mechanics, restoration shops, and performance builders who need a versatile AN6 braided hose solution that fits a broad range of GM and Ford transmissions. If you want longer-lasting cooler lines, corrosion-resistant materials, and a ready set of adaptors for common transmission ports, this kit offers a practical, install-ready option.