B8.4d car LED lamp

B8.4d LED dashboard bulb: blue light behind your gauges

The B8.4d bulb is a small dashboard bulb with a plastic base. It is located behind gauges, meters, and illuminated switches in the dashboard. If a bulb is broken or you want a different color, replace it with an LED version. Here you will find B8.4d LED bulbs in blue, for 12V, per set of 2 pieces.

What to pay attention to when choosing

• Correct size: B8.4d, B8.3d and B8.5d look alike, but the base differs. Choose exactly the size of your old bulb.
• Color: if there is a colored filter in front of the bulb, the blue light will mix with it. Without a filter, you will get bright blue light.
• Voltage: these bulbs are for 12V, as in most passenger cars.
• Quantity: per set of 2 pieces, handy if there are multiple bulbs in the dashboard.

Does it fit in your car?

Compare the base of the old bulb with the size in the product name; the number represents the diameter of the base in millimeters. Does the LED bulb not light up after installation? Then turn it half a turn; many LED bulbs only work in one direction. If your car shows an error message after replacement, a suitable resistor can help; for this, check our LED resistors.

Need a different size or color? Also check the B8.5d LED dashboard bulbs, the B8.3d LED dashboard bulbs or the T5 LED bulbs.

The tips on this page are non-binding advice; installation and use are at your own risk and responsibility.