Transmission Cooler Line Adapter Plate With 551121-6AN Fitting - For 6L80E, 6L90E, 8L90E Transmissions

Upgrading your transmission cooler lines? This adapter plate is exactly what you need for GM 6L80E, 6L90E, and 8L90E transmissions. It replaces the stock cooler line fittings with -6AN ports (similar to 3/8\ hose size), allowing you to connect aftermarket AN braided stainless steel hoses for better flow and durability. Made from high-quality billet aluminum alloy, it's lightweight, anti-rust, and built to handle high temperatures and pressure. The kit includes the adapter plate with fittings and seals, ready for installation. Perfect for performance builds, towing applications, or just upgrading old, leaky lines. Always use thread sealant compatible with transmission fluid. Professional installation is recommended if you're not experienced with transmission work. Comes with a 1-year quality warranty. Improve your transmission cooling and reliability with this simple yet effective upgrade.