If you need to replace the rubber fuel lines, American hose is fine. If they're in good shape, I recommend reusing the original Mercedes hose clamps, otherwise use fuel injection hose clamps - they're designed to not cut the hose as they're tightened. If you must use standard American fuel line clamps (what I call 'cheese-grater' clamps) protect the hose with a couple turns of electrical tape.

Happy Motoring, Mark

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DrDKW