Fleece Performance Transmission Cooler Line Set 17-19 GM 6.6L Duramax L5P

Over years of reliable service, even GM Allison transmission lines can fail. Cracks or leaks can lead to overheating of the transmission and can eventually cause a failure. The Fleece Performance heavy duty, high flow, flexible transmission lines are the perfect upgrade. This replacement line set is the most complete replacement transmission line kit available for your LML Duramax! With an increased diameter over stock and heavy duty hose wrap, these lines will increase overall flow and protect against future failures.

Note: This kit bypasses the factory transmission cooler thermostat.