4L80E Transmission Adapt er Fitting Front & Rear

The 4L80E transmission adapter fitting front & rear from ICT Billet is a precision-engineered hydraulic line connector designed for builders integrating the legendary 4L80E four-speed automatic into custom engine swaps and transmission conversions. Whether you're retrofitting a modern powerplant into a classic muscle car or upgrading a platform's driveline, these straight fittings provide the critical connection points between your transmission cooler lines and the adapter mounting block. This pair handles both the supply and return circuit paths, making it an essential component for any 4L80E swap project where OEM routing doesn't align with your custom frame or chassis configuration.

Machined from aluminum billet stock, these fittings feature 6 AN male threads on both ends with integrated O-ring grooves for leak-free sealing under full transmission pressure. The straight configuration eliminates flow restrictions and simplifies hose routing in tight engine bay layouts where 90-degree or 45-degree elbows create packaging conflicts. ICT Billet's natural aluminum finish resists corrosion in high-heat transmission environments while the precise threading ensures positive engagement with standard 6 AN hoses and adapters. The minimal 0.07 lb weight per unit means negligible impact on vehicle dynamics, yet the robust billet construction delivers the durability required in high-performance and endurance applications where hydraulic integrity is non-negotiable.

Engine swap enthusiasts, drag racers, and classic car restorers benefit most from this adapter fitting pair when converting to 4L80E architecture in non-OEM platforms. The combination front and rear design means you'll have both pressure and return pathways ready for manifold or remote cooler setups, supporting everything from street hot rods to full-tube-frame race vehicles. Installation requires standard 6 AN hose crimps or barbed adaptors (sold separately) and careful routing to avoid abrasion and thermal contact with exhaust components. Proper plumbing of these fittings ensures consistent transmission fluid temperature control and extends component life under sustained load—critical factors that distinguish a bulletproof swap from a shop headache.