An agricultural harvester (10) includes a chassis (12) and a foldable header (18) for cutting and gathering crop material, the foldable header (18) being carried by the chassis (12). The foldable header (18) includes a center header frame (102) and at least one wing header frame (104, 106). The at least one wing header frame (104, 106) is connected to the center header frame (102) by at least one parallel folding mechanism (108), which includes a lower parallel beam (112) and an upper parallel hydraulic piston (120) substantially parallel to the lower parallel beam (112). The foldable header (18) may further include a detachable hinge (110) releasably and pivotally connecting the at least one wing header frame (104, 106) to the center header frame (102).
