Honda Oil Fill Funnel

An oil fill funnel with an M28x3.5 thread. Confirmed to fit on the Honda L15CA engine (2022+ Civic Si, 2023+ Integra) but likely compatible with other models that use the same filler cap. 3mf and f3d files included- thread diameter, thread pitch, and hex hole size are parametric. I used ASA-CF for the print because of its fair chemical resistance and good outdoor performance (temperature and UV) and I had it on hand. I would suggest PETG as a more common alternative (fair chemical resistance, fair outdoor performance) and PA6-GF as a more ideal alternative (good chemical resistance, good outdoor performance) for this type of part. The funnel exit hole is hexagonal to provide a way to remove the threaded portion (using a 17mm male hex) should the part fail at the top of the threads due to over-tightening.