This chain link is a connecting element for the draper or gathering-chain assembly on a grain harvester header. It joins two ends of the chain to form a continuous loop that drives the crop-conveying motion across the header width. The link is designed to match the original chain’s pitch and pin diameter so that it seats correctly in the chain sprockets without inducing slack or binding. A worn or incorrect link causes uneven chain travel, leading to header vibration or skipped flights. On installation, verify that the link’s pin is fully seated and that the retaining clip or cotter is secured to prevent separation during operation.