A stalked crop harvesting header include multiple harvesting units each including a set of deck plates defining a channel, a set of snapping rollers mounted below the deck plates and adapted to grasp and pull stalks downwardly through the channel, and a pair of gathering chains adapted for conveying stalks along the channel. Each harvesting unit further includes a stalk guider at either side of a front end of the channel. Each stalk guider includes an upper stalk guiding wheel and a lower stalk guiding wheel carried by a frame. The frame includes a protrusion between the upper and the lower stalk guiding wheels, which protrusion includes a support for carrying a respective front end of the snapping rollers.