Mishimoto MMHOSE-FRD-5U Ford Mustang (351ci) Silicone Upper Radiator Hose, 1969-1970, Black Direct fit for the 19691970 Ford Mustang with a 351 5.8L INNER DIAMETER: 1.46" OUTER DIAMETER: 1.85" Maximum Temperature: 330F Constructed with high grade silicone and heat-resistant embedded fibers Mishimoto Lifetime Warranty