2009 Cadillac STS-V Bulb Sizes
Quick answer: the 2009 Cadillac STS-V uses H11 or D1S low beams, 9005 high beams and H3 fog lights. Where two sizes are listed, it depends on your trim or headlight type, so check the chart below.
2009 Cadillac STS-V bulb size chart
| Position | Bulb size (tap to shop) |
|---|---|
| Fog Light Bulb Front | H3 |
| Headlight Bulb High Beam | 9005 |
| Headlight Bulb Low Beam(Base, with halogen headlights) | H11 |
| Headlight Bulb Low Beam(Base, with HID headlights) | D1S |
| License Plate Light Bulb | 2825 |
| Side Marker Light Bulb Rear | 2825 |
Tap any bulb size to see it on Amazon. Trims and mid-year changes can differ, so pull the old bulb and match the number on its base before you order.
Which bulb should I buy?
- Just need it working again? Buy the standard halogen in the same size. It's cheap, it's legal everywhere, and it takes five minutes.
- Want to see better at night without messing with anything? Step up to a brighter halogen. Same plug, more light, no wiring.
- Want the white, modern look? Go LED. Great for fog, reverse, plate and interior lights. For headlights, LED bulbs in a housing built for halogen can throw glare, so aim them after you install and check your state's rules before running them on the street.
Our picks by bulb size
H3 (fog light front)
- Top pick: SEALIGHT H3 LED fog light bulbs
9005 (headlight high beam)
H11 (headlight low beam)
D1S (headlight low beam)
- Top pick: Torchbeam D1S HID bulbs
2825 (license plate light, side marker light rear)
- Halogen: Sylvania 194 SilverStar (2 bulbs)
- LED: LASFIT 194 LED (2 pcs)
For brake lights and turn signals, match the LED color to the lens: red behind a red lens, amber for turn signals.
While you're in there
- Cloudy headlights? New bulbs won't fix a yellowed lens. A replacement housing makes a bigger difference than any bulb: see Cadillac STS-V headlights at NTXGlow.
- Tail lights faded or cracked? Cadillac STS-V tail lights at NTXGlow.
Common questions
What size is the low beam headlight bulb on a 2009 Cadillac STS-V?
Headlight Low Beam(Base, with halogen headlights): H11. Headlight Low Beam(Base, with HID headlights): D1S.
What size is the high beam headlight bulb on a 2009 Cadillac STS-V?
9005.
What size is the fog light bulb on a 2009 Cadillac STS-V?
H3.
Can I put LED bulbs in a 2009 Cadillac STS-V?
Most sizes on this vehicle have a plug-in LED version. Fog, license plate and interior lights are the easy wins. For headlights, aim them after you install and check your local laws first. Some trims of this vehicle use HID (D-series) headlight bulbs. Replace those with the same HID size, not an LED.
How do I make sure I'm buying the right size?
Pull the old bulb and read the number stamped on its base, or check the bulb chart in your owner's manual. Trims and mid-year changes can differ from any chart, including this one.
Other Cadillac STS-V years
2006 Cadillac STS-V bulb sizes · 2007 Cadillac STS-V bulb sizes · 2008 Cadillac STS-V bulb sizes
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