BMW E30 Window Regulator Roller Wheel — 3D Print STL

Replacement roller wheel for BMW E30 (1984–1991) window regulators — BMW does not sell this separately (no part number); the dealer fix is a whole $100+ regulator. 26.0mm OD x 8.0mm bore x 6.0mm thick, press-fits the 8mm steel pin (bore modeled at 8.0; FDM holes print ~0.2mm small for a correct press fit). TEST-FIT: 26/8/6 held exactly from published caliper measurements; the 12x4mm shoulder is estimated — verify against your regulator track. Print: PETG or ASA, 100% infill. High-load part — an…

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