6 Years Available
Oldsmobile Alero Light Bulb Sizes
Complete bulb size reference for the Oldsmobile Alero from 1999 to 2004. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.
Every Oldsmobile alero from 1999 to 2004 uses the same 9006 low beam bulb — once you confirm your year is within this range, you only need one part number.
Year Range
1999 – 2004
6 model yearsBulb Sizes Across Years
| Position | Bulb Type(s) | Years | Status |
|---|---|---|---|
| Low Beam | 9006(1999–2004) | 6 years | Consistent |
| High Beam | 9005(1999–2004) | 6 years | Consistent |
| Turn Signal Front | 3157CK(1999–2004) 3157NA(2002–2002) | 6 years | Changed |
| Side Marker | 194(1999–2004) | 6 years | Consistent |
| Fog Light | 894(1999–2004) | 6 years | Consistent |
| License Plate | 194(1999–2004) | 6 years | Consistent |
| Brake Light | 3157CK(2001–2004) 921(1999–2002) | 6 years | Changed |
| Parking Light | 3157CK(2000–2004) 3157NA(1999–2002) | 6 years | Changed |
| Turn Signal Rear | 3157CK(2002–2004) 3057(1999–2001) | 6 years | Changed |
| Tail Light | 3057(1999–2002) 3157CK(2003–2004) | 6 years | Changed |
| Reverse Light | 921(1999–2004) | 6 years | Consistent |
Common Alero Replacement Parts
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Frequently Asked Questions
We have bulb size data for the Oldsmobile Alero from 1999 to 2004, covering 6 model years. Select your year below for a complete position-by-position bulb chart.
No, the Oldsmobile Alero has used the 9006 low beam bulb consistently across all 6 model years in our database. Any year in the 1999–2004 range uses the same bulb.
The Oldsmobile Alero uses a 9006 bulb for the low beam and a 9005 for the high beam, and a 894 for the fog lights. Select your year below for the exact fitment chart.
Yes. The Oldsmobile Alero uses a 9006 low beam, and direct-fit LED conversion kits for that size are widely available. LED upgrades typically produce 2–3× more light output than stock halogen and last 25,000+ hours. Look for a DOT-compliant kit with a proper beam cutoff pattern.
Select your model year from the list below. Each year page shows every bulb position — low beam, high beam, fog light, turn signal, and brake light — with the correct size and a link to buy it on Amazon.