14 Years Available
Pontiac Firefly Light Bulb Sizes
Complete bulb size reference for the Pontiac Firefly from 1985 to 2000. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.
The Pontiac firefly changed low beam specifications across model years — 1987–1997: H4666; 1998–2000: 9007; 1985–1986: H6054; 1996: H4. Make sure to select your exact year below to get the right bulb size.
Year Range
1985 – 2000
14 model yearsBulb Sizes Across Years
| Position | Bulb Type(s) | Years | Status |
|---|---|---|---|
| Turn Signal Front | 1156(1987–1997) 1157A(1998–2000) 1157(1985–1986) | 14 years | Changed |
| Side Marker | 168(1988–2000) 194(1985–1990) | 14 years | Changed |
| Low Beam | H4666(1987–1997) 9007(1998–2000) H6054(1985–1986) H4(1996–1996) | 14 years | Changed |
| Tail Light | 1157(1985–2000) | 14 years | Consistent |
| Brake Light | 1157(1985–1999) 1156(1987–1989) 921(2000–2000) | 14 years | Changed |
| Reverse Light | 1156(1985–2000) 921(1994–1997) | 14 years | Changed |
| Turn Signal Rear | 1156(1985–2000) 1157(1987–1991) | 14 years | Changed |
| Parking Light | 168(1988–1997) 1157A(1998–2000) 1157(1985–1986) 1156(1990–1990) 194(1987–1987) | 13 years | Changed |
| License Plate | 168(1994–2000) | 7 years | Consistent |
| Trunk Light | 194(1998–2000) | 3 years | Consistent |
| Dome Light | DE3022(1985–2000) | 14 years | Consistent |
Common Firefly Replacement Parts
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Frequently Asked Questions
We have bulb size data for the Pontiac Firefly from 1985 to 2000, covering 14 model years. Select your year below for a complete position-by-position bulb chart.
Yes, the Pontiac Firefly changed low beam bulb specifications across generations: 1987–1997: H4666; 1998–2000: 9007; 1985–1986: H6054; 1996–1996: H4. Make sure to check your exact year using the list below.
The Pontiac Firefly uses a H4666 bulb for the low beam. Select your year below for the exact fitment chart.
Yes. The Pontiac Firefly uses a H4666 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.