6L80E and 10L90E Transmission Cooler Line Kit for LS Engine Swaps
When installing a 6L80E or 10L90E transmission in an LS chassis, stock cooler lines often suffer from tight bends and exposure to heat sources that drive fluid temperatures skyward and can starve the circuit. The Transmission Cooler Line Kit - 6L80E-10L90E addresses this by placing a billet aluminum manifold at the tail housing and routing high pressure stainless steel braided hoses along a clear low risk path. It features precision fittings and hose lengths matched to GM 6L80E, 6L90E, 8L90E and 10L90E port locations without any case modifications. By moving hoses clear of exhaust headers and sharp frame rails, the kit prevents abrasion and maintains steady flow so fluid stays cooler even during spirited shifts on track or street.
Precision CNC Machined Billet Manifold Design
The billet aluminum manifold bolts directly to the transmission tail housing without any need for case modifications, preserving the factory housing integrity. Its internal flow passages are shaped by precision CNC machining to minimize turbulence and promote uniform fluid distribution as transmission fluid enters and exits the cooler circuit. By matching GM 6L80E and 10L90E port positions exactly, the design eliminates guesswork during installation and prevents misalignment that can lead to leaks. This careful contouring also maintains consistent line pressure throughout the cooling loop, reducing hotspots that degrade fluid over time. The result is a streamlined flow path that supports stable temperatures under sustained load and extends component life.
Heat and Abrasion Resistant Braided Hose Construction
Each high pressure hose features a smooth PTFE inner lining wrapped in a densely woven stainless steel braid that withstands repeated thermal cycling and system pressures. A rugged black cover shields the core against contact with exhaust headers and sharp frame rails, preventing abrasion and premature wear. The stainless braid also provides excellent resistance to chemicals and radiant heat, so hoses retain their shape and flow rating even in close proximity to engine hot spots. By routing these lines along a defined, low risk path, this kit maintains steady transmission temperatures during spirited shifts and demanding conditions.
Leak Proof Performance with Precision Fittings
All included fittings are CNC machined to exact thread form and sealing surface tolerances, ensuring a tight, reliable connection that holds full circuit pressure. This precision eliminates minor gaps that can lead to seepage under load and protects internal clutch packs and bearings from fluid starvation. With proper sealing in place, routine maintenance stops become less frequent, allowing drivers to focus on performance rather than leak checks. The durable connections also resist vibration and thermal expansion, so the cooling loop remains fully sealed and efficient across every driving scenario.
Built for a precise fit and consistent cooling performance in your LS swap project.