Poulan Clutch Spring part# 023381 supersedes to part# 530-023381. This spring is a metal strip of spring steel that is 1-3/4" long and 3/8" wide. Listed as "No Longer Available" by the manufacturer, it is used in the clutch of the following chainsaw models; S25AV, S25DA, and S25. There may be models that use this part that we do not have listed here. Please refer to your owners manual or a parts breakdown for your model, to assure that this is the correct part for your machine, before you order.