Upgrade your 2013-2018 Ram truck's 68RFE transmission with our premium stainless steel high-pressure transmission lines. Built to replace failure-prone factory aluminum lines, these lines offer top-notch corrosion resistance, added rigidity, and long-lasting durability. Precision-engineered for compatibility with both the thermal bypass block and factory thermostatic bypass, this upgrade provides seamless adaptability. Crafted to address the common failure point where the clip attaches to the transmission, this direct bolt-on kit boosts reliability and extends transmission life. The set also includes RedLine Transmission Thermal Bypass Block stainless steel case fittings, designed for a superior, more dependable seal than factory fittings.