This chain is part of the inclined feeder assembly that carries crop material from the header into the threshing mechanism. It transmits drive from the lower sprocket to the upper sprocket, moving the slats that sweep the crop mat up the feeder housing. As the chain stretches over time, it can cause slat timing drift and increased wear on the sprocket teeth. The manufacturer machines the chain to match the original pitch and roller dimensions, so it seats correctly on the existing sprockets without requiring a sprocket replacement. On installation, verify the chain tension per the service manual and check that the slats are aligned square to the chain axis.