A fuel supply unit (40) for vehicles includes a flange assembly (28) and a reservoir assembly (38). The flange assembly includes a flange (36), at least a pair of metal struts (26) extending from the flange, and electrically conductive spring structure (20). The spring structure includes a first and second spring members (24, 26) having coils. Each coil receives at least a portion of an associated strut. A central leg member (30) joins the first and second spring members. The reservoir assembly includes a reservoir (42), a fuel pump (44) in the reservoir, a fuel filter (46) in the reservoir and associated with the fuel pump for filtering fuel. The fuel filter has an electrically conductive portion (48). The struts are coupled with the reservoir with the spring members being disposed between the flange and the reservoir. The central leg member contacts the electrically conductive portion of the fuel filter.