2020 BMW X4 Bulb Size

Decision: This chart’s purpose is to list likely replacement bulb sizes for a 2020 BMW X4 so you can compare fitment and buy confidently. I present factory-fit options and common aftermarket equivalents, with an evidence-based interpretation that favors matching OEM specifications whenever possible. Constraints: model variations and trim packages introduce limitations, so the list frames options rather than asserting a single definitive fit. Compare LED, halogen, and xenon/bi-LED entries by connector type, lumen output, and heat profile to form a practical hypothesis about compatibility. Recommendation follows from that comparison: verify the vehicle’s part numbers or owner’s manual before purchase and prioritize bulbs rated for the same mounting and thermal characteristics. Risks: affiliate links may be included in the chart to help sourcing; I earn a commission at no extra cost to you. This is disclosed for transparency and should not influence your independent verification or final selection.