It's been a decade since the 2013-2018 RAM 6.7L Cummins began to roll off the assembly line. While robust and reliable, the 2013-2018 RAM 6.7L Cummins is only partially immune to the test of time. Stock components, like the plastic degas tank, become brittle and cloudy over time, making it prone to leaks and impossible to see the coolant level.----The Mishimoto 2013-2018 RAM 6.7L Cummins aluminum degas tank is the most effective way to ensure your degas tank lasts as long as your RAM! The full-aluminum, TIG-welded construction of Mishimoto's degas tank means it won't crack and leak coolant after thousands of heat cycles like the stock plastic tank. The integrated cold-fill indicator also makes filling easy; no more trying to shine a flashlight through a muddy tank. To ensure this Mishimoto degas tank maintains all your stock tank's functionality, we've also included an OEM-quality coolant level sensor for the low coolant level light on the dash. This tank also incorporates internal baffling to ensure coolant stays where it needs to be, even when the road gets rough. Those with big single-turbo trucks also know that the stock expansion tank sits dangerously close to the turbo, or blocks it altogether. The Mishimoto degas tank is specifically designed to give you clearance for big single turbo setups, without any additional trimming----The Mishimoto 2013-2018 RAM 6.7L Cummins aluminum degas tank is available in a stealthy micro-wrinkle black powder coat or natural finish to match any custom theme. Of course, this all-aluminum degas tank is also backed by our Mishimoto's Lifetime Warranty.