2004 Volvo V40 Bulb Size

Misconception: one bulb size fits every socket on a 2004 Volvo V40. It seems true because many lights look similar from the outside and replacements at a shop get swapped quickly. Think of it as a visual trick rather than a rule. What is true: each lamp position — low beam, high beam, indicator, fog, brake, and interior — can use different sizes and fittings. A useful mental model is to match function to socket, not appearance. The chart lists the correct bulb types for each location so you can order confidently. Implications and quick tests: use the chart as a rule of thumb, cross-check with your owner’s manual, or remove a bulb to read its marking. Quick recap: check the chart, verify physically, then buy. Note: some links on the page are affiliate links; they cost you nothing extra and help support the site.