2 Years Available
BMW 645ci Light Bulb Sizes
Complete bulb size reference for the BMW 645ci from 2004 to 2005. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.
Year Range
2004 – 2005
2 model yearsBulb Sizes Across Years
| Position | Bulb Type(s) | Years | Status |
|---|---|---|---|
| Low Beam | HID-D2S LED(2004–2005) | 2 years | Consistent |
| High Beam | H7 LED(2004–2005) | 2 years | Consistent |
| Fog Light | 9006 LED(2004–2005) | 2 years | Consistent |
| Brake Light | LED Bulb(2004–2005) | 2 years | Consistent |
| Side Marker | LED Bulb(2004–2005) | 2 years | Consistent |
| Turn Signal Front | 2827 LED(2004–2005) | 2 years | Consistent |
| Turn Signal Rear | 12496 LED(2004–2005) | 2 years | Consistent |
| Dome Light | 6418(2004–2005) | 2 years | Consistent |
| License Plate | 2825(2004–2005) | 2 years | Consistent |
| Map Light | 6486X(2004–2005) | 2 years | Consistent |
| Reverse Light | 7506(2004–2005) | 2 years | Consistent |
| Trunk Light | 6418(2004–2005) | 2 years | Consistent |
Select Your Year
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Frequently Asked Questions
We have bulb size data for the BMW 645ci from 2004 to 2005, covering 2 model years.
The BMW 645ci has used consistent bulb sizes across all available years. The low beam uses a HID-D2S LED bulb.
The most commonly used low beam headlight bulb for the BMW 645ci is the HID-D2S LED. Select your specific year below for the exact fitment.
Yes, you can upgrade your BMW 645ci headlights to LED. Look for an LED conversion kit in the HID-D2S LED size for the low beams. LED bulbs offer better visibility and longer lifespan.
Select your BMW 645ci year from the list below. Each year page shows every bulb position with the correct size and links to purchase on Amazon.