

Please note that any Festool items that are out of stock will not be delivered to customers until January 2026. If you would like to know if an item is in stock before ordering, please contact us via email and we will get back to you ASAP during our working hours. Please note that this is a universal situation for all Festool suppliers during the holiday period.
Bostitch Piston Assembly For BT18 & DPN18 Series Nailers
This piston assembly is the driving force behind your nailer. This is the part that pushes the nails out of the nozzle and into the work surface. Over time this part can become worn down and start to become jammed when firing. If left these problems will only get worse eventually leading to having to fully down tools.
Please see below for all applicable models