those look like small "ear clamps" similar to what is used on CV boots, however I'm sure fuel line clamps will work, just make sure you tighten them down good, lot of pressure in those fuel lines!

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards