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Mishimoto’s full‑flow thermal bypass valve kit replaces the factory in‑line thermostat on 2019+ RAM 6.7L Cummins trucks to provide uninterrupted flow to the transmission cooler. CNC‑machined billet aluminum passages and cooling fins improve fluid flow and heat dissipation, helping prevent overheating during heavy towing or hot climates. The kit is serviceable and backed by Mishimoto’s Lifetime Warranty.
Mishimoto 2019+ RAM 6.7L Cummins Thermal Bypass Full Flow
