The Mishimoto Mitsubishi Evolution 456 Upper Silicone Hose is made from a combination of high - grade silicone and heat - resistant embedded fibers for a high - quality replacement to your OEM rubber hose.Available in black, blue or red, Mishimoto silicone hoses retain OEM fitment while providing increased pressure tolerance for the ultimate upgrade in performance and style.The Evolution 456 upper hose can be used on the Evolution 789.By using in conjunction with PN MMRAD - EVO - 456, the Evolution 456 upper hose routes safely around the manifold, avoiding fitment issues caused by the manifold interfering with the standard upper hose.