This multi-ribbed belt transmits drive from the gearbox output to the metering and distribution components of the seed drill. It is a 16PK profile belt, meaning it has sixteen longitudinal ribs that engage with matching pulleys to prevent slip under varying load. The belt’s effective length is set to match the center distance of the original pulley arrangement. A worn or stretched belt causes the metering system to run at an incorrect speed, leading to uneven seed rate across the drill. As an original-manufacturer component, the belt is molded to the same rib profile and length tolerance as the assembly it replaces, so no adjustment of the tensioner beyond the standard range is required. On installation, ensure the belt is fully seated in each pulley groove and that the tensioner is set to the specified deflection.