An engine compartment support arrangement for an agricultural machine includes first and second support rails disposed within an engine compartment, a horizontal platform disposed between the first and second support rails and coupled thereto, and a plurality of engine accessory mounts welded to at least one of the first support rail and the second support rail. The first support rail includes a horizontal portion and an angled portion, wherein a second end of the horizontal portion is aligned with a first end of the angled portion. The second support rail includes a horizontal portion and an angled portion, wherein a second end of the horizontal portion is aligned with a first end of the angled portion.