The invetion relates to a haul truck body (2), comprising a front wall (5) and two opposing side walls (6). Each side wall (6) presenting an inner surface (7) and an upper edge portion (8) extending rearwardly from a rear end (9) of side wall (6) towards the front wall (5). Also, each side wall (6) presents an upper reinforcement element (10) which is integrally formed with the side wall (6) and extends along the upper edge portion (8) of the side wall (6). The invention also relates to a truck (1) and a method for manufacturing a haul truck body (2).
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