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ACDelco Specialty Premium Fuel Injection Hoses (MPI) are low-permeation, premium hoses for use on all fuel systems, including multi-port fuel injection (MPI). They are approved for use with gasoline, diesel, bio-diesel including soybean methyl ester (SME), rapeseed methyl ester (RME), palm methyl ester (PME) per ASTM D6751, E-85, methanol, ethanol, ethanol extended gasoline, and gasohol fuels. They are equipped with a patented five layer technology that keeps fuel out of the environment while delivering peak fuel efficiency. ACDelco Specialty Premium Fuel Injection Hoses (MPI) are temperature rated from -40 degrees Fahrenheit to 275 degrees Fahrenheit (-40 degrees Celsius to 135 degrees Celsius) continuous, and up to 302 degrees Fahrenheit (150 degrees Celsius) intermittent.