This chain is the pulling chain for the header draper or reel drive on a harvesting machine. It transmits tensile force from the hydraulic or mechanical actuator to move the header assembly forward or retract it. A worn or stretched chain causes inconsistent header positioning, leading to uneven crop intake and increased load on the tensioner. The chain is constructed with standard roller-link geometry to match the original sprocket pitch, ensuring proper engagement without skipping. On installation, verify the chain tension is within the specified range and that the master link clip is oriented with the closed end facing the direction of travel.