4L80E Transmission Cooler Line Kit for LS Engine Swaps
Starting your LS engine swap with a 4L80E transmission often runs into the challenge of maintaining consistent coolant flow through a crowded chassis while also avoiding abrasion or heat soak in critical cooler hoses. This Transmission Cooler Line Kit delivers braided stainless steel hoses that stand up to engine heat and road debris, paired with precision CNC fittings that form a secure seal at transmission and radiator ports. Minimized routing bends and direct fit connections to both 4L80E and 4L85E ports reduce installation time and keep hoses clear of headers or suspension components. The continuous fluid circuit created by this kit helps stabilize transmission temperature under heavy towing or track conditions, giving builders confidence that torque converters stay cool and performance remains predictable.
Stainless Steel Braided Hose Construction
The braided stainless steel outer layer serves as a robust shield against engine heat and road debris, preserving the inner hose core under extreme conditions. By resisting abrasion from contact with chassis components or sharp edges, it maintains consistent wall integrity and prevents bulging when system pressure rises. Its inherent flexibility allows installers to route lines through tight engine-bay spaces without crimping, while still providing firm protection against constant vibration. Over repeated heat cycles, the braid retains its shape and strength, ensuring an unobstructed flow path and extended service life even in towing or track environments.
Precision CNC Machined Fittings and Sealing Reliability
Each fitting is CNC machined to exact tolerances, creating metal-to-metal mating surfaces that align perfectly with 4L80E and 4L85E transmission and radiator ports. When fastened to specification, the fittings compress sealing gaskets evenly, eliminating gaps that can lead to fluid loss or air ingestion during thermal cycling. The precise thread pitch matches factory standards, preventing cross threading and allowing a consistent seal on the first attempt. This meticulous connector geometry also limits movement under vibration and heavy loads, giving builders confidence in leak-free operation through highway driving or track sessions.
Optimized Fluid Routing for Enhanced Cooling Efficiency
The cooler line layout is engineered to minimize sharp bends and flow disruption, promoting a smooth fluid path between transmission and radiator. By reducing turbulence and eliminating localized hotspots, the system achieves more uniform heat transfer and maintains optimal transmission temperatures under load. This steady flow is crucial when towing heavy trailers or driving on a race circuit, since heat spikes can accelerate wear on torque converter components. The streamlined routing also keeps hoses clear of exhaust headers and suspension linkages, reducing the risk of chafing and accidental contact while presenting a tidy under-hood appearance.
Integrated Kit Design for Efficient Installation
This complete kit includes braided hoses, precision fittings, sealing gaskets and all necessary installation hardware in one package, eliminating time-consuming trips to source mismatched parts. Direct-fit connections align precisely with factory ports on both 4L80E and 4L85E transmissions, simplifying workflow and reducing the chance of assembly errors. Technicians can install, torque and leak-test the entire system in minimal time, freeing up valuable shop hours for engine tuning and performance calibration. With the plumbing verified, builders gain confidence that transmission temperatures will remain stable under demanding driving conditions.
This Transmission Cooler Line Kit delivers a precise fit and dependable cooling performance for your LS swap.