Locking End Cap for Motivx Tools Ford Oil Funnel
Simple end cap for the Motivx Tools engine oil funnel for Ford vehicles that locks in place with a 1/4 turn.
https://www.motivxtools.com/collections/oil-funnels/products/advanced-engine-oil-funnel-for-ford-vehiclesThe end cap nestles against the funnel's built in Oring for a secure file.
An STL file is included as well as the OpenSCAD program that was used to create it. Tweak parameters if needed and create your own version.
Use your favorite print settings, though supports are required for the two nubs.
Note: I have no affiliation to MotivX Tools.