Poulan Gasket part# 019123 supersedes to part# 530-019123. This part is listed as "No Longer Available" by the manufacturer. This is a sticky back gasket that adheres to one of the mounting surfaces. This gasket was used on the air filter assembly of the following Poulan chainsaw models; 3400, 3700, 3800, 4000, 375, 385, 395, PP375, PP385, and PP395. 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.