Air Intake Valve Adapter - Extended Vacuum Stem

This is a 3D-printed adapter I designed to clean air intake valves using a shop vac and walnut blasting. I added an extended stem to this adapter so the vacuum can reach further into the intake valves for a deeper clean. There’s also a cut-out section that allows the walnut blast media to flow freely without getting blocked. It’s easy to print, fits most shop vacs and standard intake ports, and makes DIY engine cleaning a lot more efficient and mess-free.