A side channel machine arrangement comprises a side channel machine (1) and a fluid connection device (2). The side channel machine (1) has a housing (5), side channels arranged in the housing (5) and fluid inlet openings (11) provided in said housing, which have a flow connection to the side channels to introduce a fluid to be conveyed into the side channels, at least one fluid outlet, which is provided on the housing (5) and has a flow connection to the side channels to discharge the fluid from the side channels, and an impeller that is mounted so that it can be rotatably driven in the housing (5). The fluid connection device (2) is used to connect the side channel machine (1) to a fluid supply line. It comprises a first fluid connection mechanism (3), which is provided on the housing (5) and has a flow connection to the fluid inlet openings (11), and a second fluid connection mechanism (4), which has a fluid inlet piece (29) for connection to the fluid supply line.