Cadillac Eldorado Headlight Bulb Size
Find the correct headlight bulb size for your Cadillac Eldorado. Covers low beam, high beam, fog lights, and turn signals for all years.
Last updated: 2026-05-07 • Reading time: 8 min • By AllOEMManuals Editorial Team
Quick Answer
The Cadillac Eldorado headlight bulb size depends on the model year and trim. Common sizes include H11 (low beam), 9005/HB3 (high beam), and H16 (fog lights) — see the full breakdown below.
| Generation | Years | Top spec |
|---|---|---|
| 1997-2002 | 1997-2002 | 9006/HB4 or H4 |
| 1991-1996 | 1991-1996 | 9006/HB4 or H4 |
| 1985-1990 | 1985-1990 | 9006/HB4 or H4 |
Know the exact headlight bulb size job for your Cadillac Eldorado
The Cadillac Eldorado headlight bulb size depends on the model year and trim. Common sizes include H11 (low beam), 9005/HB3 (high beam), and H16 (fog lights) — see the full breakdown below.
Bulb size can change between reflector, projector, HID, LED, and market-specific housings. Once the spec is confirmed, use the supplies and purchase links below to build the full one-trip shopping list before you start the repair.
Exact Vehicle Check
Use the archive navigator when you need the exact engine, trim, or production-branch manual instead of a broad year-range summary. That keeps the buying list and repair steps aligned with the real vehicle.
1997-2002
1997-2002- →Never touch halogen bulbs with bare fingers — skin oil causes hot spots and premature failure
- →Replace bulbs in pairs — if one side burned out, the other is likely near end of life
1991-1996
1991-1996- →Never touch halogen bulbs with bare fingers — skin oil causes hot spots and premature failure
- →Replace bulbs in pairs — if one side burned out, the other is likely near end of life
1985-1990
1985-1990- →Never touch halogen bulbs with bare fingers — skin oil causes hot spots and premature failure
- →Replace bulbs in pairs — if one side burned out, the other is likely near end of life
1979-1984
1979-1984- →Never touch halogen bulbs with bare fingers — skin oil causes hot spots and premature failure
- →Replace bulbs in pairs — if one side burned out, the other is likely near end of life
1973-1978
1973-1978- →Never touch halogen bulbs with bare fingers — skin oil causes hot spots and premature failure
- →Replace bulbs in pairs — if one side burned out, the other is likely near end of life
1967-1972
1967-1972- →Never touch halogen bulbs with bare fingers — skin oil causes hot spots and premature failure
- →Replace bulbs in pairs — if one side burned out, the other is likely near end of life
1961-1966
1961-1966- →Never touch halogen bulbs with bare fingers — skin oil causes hot spots and premature failure
- →Replace bulbs in pairs — if one side burned out, the other is likely near end of life
1955-1960
1955-1960- →Never touch halogen bulbs with bare fingers — skin oil causes hot spots and premature failure
- →Replace bulbs in pairs — if one side burned out, the other is likely near end of life
1953-1954
1953-1954- →Never touch halogen bulbs with bare fingers — skin oil causes hot spots and premature failure
- →Replace bulbs in pairs — if one side burned out, the other is likely near end of life
One-Trip Shopping List
Recommended supplies and tools for this job, grouped so you can buy everything before the repair starts.
LED Upgrade Bulbs
Brighter, whiter light for better nighttime visibility.
Replacement Halogens
Standard OEM-spec bulbs for reliable replacement.
Dielectric Grease
Protects electrical connectors from moisture.
Latex-Free Gloves
Avoid fingerprints on the bulb and keep glass clean.
Project Essentials
Basic tool sets, gloves, and cleaning supplies for your Cadillac Eldorado so the job is ready when the parts arrive.
Frequently Asked Questions
- What size headlight bulb does a Cadillac Eldorado use?
- The Cadillac Eldorado headlight bulb size varies by year. Newer models often use factory LED units, while older models use H11, H7, or 9006 halogen bulbs. Check the year-specific specs below for your exact fitment.
- Can I put LED bulbs in my Cadillac Eldorado?
- If your Cadillac Eldorado has halogen headlights, you can install LED replacement bulbs. Look for bulbs with a proper beam pattern (projector-compatible) to avoid blinding other drivers. Some models may need anti-flicker adapters.
- How do I replace the headlight bulb on a Cadillac Eldorado?
- On most Cadillac Eldorado models, you can access the headlight bulb from behind the headlight assembly in the engine bay. Twist the bulb socket counterclockwise, pull out the old bulb, insert the new one (don't touch the glass), and twist back in.
- Why does my Cadillac Eldorado headlight keep burning out?
- Frequent bulb burnout on the Cadillac Eldorado is usually caused by a loose connection, moisture in the housing, touching the bulb glass during installation, or a voltage regulator issue. Check the connector and housing seal.
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Author & Review
Written by AllOEMManuals Editorial Team. Reviewed by ASE-certified technicians and updated with factory-reference checks for fitment-sensitive steps.
This guide was drafted with AI assistance and reviewed for accuracy by a human editor.
Last updated: 2026-05-07