Mishimoto's secondary aluminum degas tank for 2011+ Ford 6.7L Powerstroke replaces the factory plastic unit with aircraft-grade aluminum construction, internal baffles, and a sight glass for easy coolant level checks. It increases secondary system capacity by roughly 15.65% over stock and is offered in natural or micro-wrinkle black finishes. The part is built for long-term durability and backed by a lifetime warranty.
Mishimoto 11+ Ford 6.7L Powerstroke Secondary Expansion Tank - Micro-Wrinkle Black