Page 3 - silicone

Interested in picking up our 6.4L Powerstroke coolant hose kit? Check out our product page linked below!

Mishimoto Ford 6.4L Powerstroke Silicone Coolant Hose Kit

6.4L Engine bay with Mishimoto aluminum radiator

The Project Begins

Looking to pair your 6.4L aluminum radiator with a nice set of silicone hoses? We thought so! After developing a variety of components for the 6.4L Powerstroke, we decided to take a closer look at the radiator hoses on this truck.

After Ford released this truck in 2008, there were numerous complaints about leaking hoses. Ford issued a technical service bulletin (TSB) that offered a fix: a set of replacement hoses with an additional O-ring for better sealing power. This modification was made to the engine-side fitting of the hose, while the radiator-side still retained the single o-ring design. The replacement hoses seemed to solve the problem.

Stock 6.4L Powerstroke radiator hose

That said, the stock hoses still feature plastic quick-connect ends that lock into