2017 LR Discovery 5 (full-size, not sport) has a top-mount oil filter. I didn't want to purchase the astronomically expensive "special" tool to remove the oil filter cover, so I designed this. It fits TIGHT (the oil filter cover is sealed tightly and requires a lot of pressure to remove). 15-faces/flutes: ~90mm from vertex to face 18mm faces

I used HS PLA, but regular PLA or PETG would probably be fine. I printed it with the "X" down with regular supports (I changed the distance of supports to 2mm so that it was only supporting the centers of the "X" section and it did great).

Print with >40% infill (I like rectilinear for this but there are other strong infills). 0.22-0.24mm layer height (just has to be functional, not pretty) 0.42-0.44mm layer width 4+ perimeters (not too many or you'll sacrifice strength). 3+ top/bottom shells Random seam for strength no brim or raft.