2021 BMW X7 Bulb Size

tl;dr: This bulb size chart lists the exact replacement bulbs for a 2021 BMW X7. I compiled it from service data and hands-on replacements to save you time. Recommendation: match the OEM part numbers in the chart when replacing headlights, taillights, and interior lamps to maintain brightness and fit. Impact: using correct bulbs avoids poor beam patterns and electrical issues. It also preserves adaptive lighting and warranty considerations for the X7. Risks include wrong fit, overheating, or blown fuses if you choose incompatible bulbs. Gotchas: LED conversion kits may need resistors or coding. Next steps: use the chart as your checklist, buy matching bulbs, and follow installation notes. Affiliate disclaimer: I may earn a small commission if you purchase through links on this page, at no extra cost to you.