The Mishimoto cold-side upper boot for 2008–2010 Ford 6.4L Powerstroke engines is a direct-fit replacement intended to improve durability over the factory pipe. It employs DuraCore inner material and multi-layer silicone with embedded heat-resistant fibers to resist heat, pressure, fuel and oil, and comes with constant-tension T-bolt clamps. The boot is engineered to deliver a secure seal and reliable service life.
Mishimoto 08-10 Ford 6.4L Powerstroke Factory Fit Boot - Cold Side Upper Boot