A battery pack support assembly includes a plurality of isolators disposed between an outer support frame of a battery pack and longitudinal rails of a vehicle frame. Each isolator includes a housing, an elastic body and a fastener. The housing defines a central opening and opposed flanges. The opposed flanges are secured to a respective longitudinal rail. The elastic body is disposed within the central opening of the housing. The fastener extends laterally through the central opening of the housing and secures the elastic body to the outer support frame of the battery pack.