What Size Bulbs Does a 2004 Volvo V40 Use?
Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.
Installation Difficulty
Hard (Tight clearances)
Est. Replacement Cost
$15 - $40 (Halogen) / $30+ (LED)
What Lighting System Does the 2004 Volvo V40 Have?
The 2004 Volvo V40 features an extensive lighting system with 11 bulb positions. It uses halogen technology with a single H7 LED dual-filament bulb handling both low and high beams. The V40 has been available from 2000 to 2004, and the 2004 model falls in the late-generation years.
Can You Put LED Bulbs in a 2004 Volvo V40?
Upgrading the 2004 Volvo V40 to LED headlights is straightforward since it uses a single H7 LED dual-filament bulb for both low and high beams. You only need one pair of LED bulbs to upgrade both functions. Look for a H7 LED LED kit that specifically supports dual-filament operation to ensure both beams work correctly. For the fog lights, a H3 LED LED bulb provides a clean white output that pairs well with LED headlights.
How to Replace Bulbs on a 2004 Volvo V40
The H7 bulb uses a spring clip or wire retainer that holds the bulb in the socket. To remove the old bulb, disconnect the wiring harness first, then twist the bulb counter-clockwise and pull it out. Volvo vehicles are known for tight engine bay clearances around the headlight assembly. You may need to remove the air intake duct, battery cover, or wheel well liner to access the bulbs. Budget 30 to 45 minutes per side for your first replacement. When installing the new bulb, avoid touching the glass with bare fingers. Skin oils create hot spots that shorten bulb life. Wear clean gloves or handle the bulb by its plastic base only. The fog lights are accessed from underneath the front bumper. You may need to remove a few plastic clips or screws from the fender liner to reach the H3 LED fog light socket.
Full Upgrade Bundle
Upgrade All 11 Positions at Once
2004 Volvo V40 Complete Bulb Size Chart
| Position | Bulb Size | Shop |
|---|---|---|
Low Beam | H7 LED | Buy H7 LED |
High Beam | H7 LED | Buy H7 LED |
Fog Light | H3 LED | Buy H3 LED |
Brake Light | LED Bulb | Buy LED Bulb |
Turn Signal Front | 2827 LED | Buy 2827 LED |
Turn Signal Rear | 12496 LED | Buy 12496 LED |
Reverse Light | 7506 | Buy 7506 |
License Plate | 6418 | Buy 6418 |
Map Light | 2821 | Buy 2821 |
Parking Light | 3457NA | Buy 3457NA |
Trunk Light | 6418 | Buy 6418 |
Want to upgrade everything at once?
Shop Complete LED Kit for 2004 Volvo V40How Long Do 2004 Volvo V40 Headlight Bulbs Last?
Standard halogen headlights on the 2004 Volvo V40 have an expected lifespan of 500 to 1,000 hours, which works out to roughly 2 to 3 years of normal use. Signs of a failing halogen bulb include noticeably dimmer output, a yellowish tint compared to the other headlight, or intermittent flickering. At 22 years old, the original bulbs on your V40 are likely overdue for replacement. Even if they still illuminate, reduced brightness significantly impacts nighttime safety. When one headlight burns out, replace both sides at the same time. Bulbs from the same batch age at similar rates, and mismatched brightness is distracting to oncoming drivers.
What Bulbs Are Compatible with the 2004 Volvo V40?
The H7 low beam bulb on the 2004 Volvo V40 is a specific fitment. There are no widely recognized cross-compatible alternatives, so make sure to purchase the exact H7 size. Using the wrong bulb size can cause improper beam patterns that reduce your visibility and blind other drivers. It can also cause overheating inside the headlight housing, potentially warping the plastic lens or reflector. Always verify the bulb number before purchasing.
2004 Volvo V40 Headlight FAQ
Did Volvo V40 Bulb Sizes Change Over the Years?
Over its production run from 2000 to 2004, the Volvo V40 has seen bulb size changes in the Turn Signal Front, Map Light and Trunk Light positions. The 2004 model uses the newer bulb specification introduced around 2003. Always verify the exact bulb size for your specific 2004 model year using the chart above, as using the wrong size can result in poor fitment or reduced light output.
Other V40 Years
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Other Vehicles That Use H7 LED Bulbs
These vehicles from other makes also use a H7 LED low beam bulb: