Valve Stem Seal Puller

thingiverse

Designed for Subaru EJ25D Phase 1 engines, this tool is built to tackle the valve stem seals with ease. The seals themselves measure 13mm in outer diameter by 9mm in height, making this device versatile enough to work on many other vehicles as well. To use it effectively, simply push the main body down over the seal and watch as it snaps into place, then secure it further by pushing down on the locking collar. A gentle wiggle and pull should do the trick. After putting my first print through its paces, I'm pleased to report that it handled pulling eight seals without a single issue. For added convenience, consider modifying this design with a longer, larger handle for easier handling.