The Arabs certainly think so, otherwise they would not have come up with “Arab nationalism” or “pan-Arabism” (both derived from Nazi ideas, for the record).
Arabs are an ethnic group - not a race. Just as with the Chinese and the Japanese. If Arabs want to be considered part of a race, then the most applicable grouping would be that of the Semitic peoples. But of course, if Arabs were to consider themselves to be part of the Semitic race, that would make them blood brothers to the Jews.