4 Years Available
Mercury Zephyr Light Bulb Sizes
Complete bulb size reference for the Mercury Zephyr from 1978 to 1983. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.
Every Mercury zephyr from 1978 to 1983 uses the same H4656 low beam bulb — once you confirm your year is within this range, you only need one part number.
Year Range
1978 – 1983
4 model yearsBulb Sizes Across Years
| Position | Bulb Type(s) | Years | Status |
|---|---|---|---|
| Side Marker | 194(1978–1983) | 4 years | Consistent |
| High Beam | H4651(1978–1983) | 4 years | Consistent |
| Low Beam | H4656(1978–1983) | 4 years | Consistent |
| Turn Signal Front | 1157(1980–1983) 1157A(1978–1979) | 4 years | Changed |
| Reverse Light | 1156(1978–1983) | 4 years | Consistent |
| License Plate | 168(1978–1983) | 4 years | Consistent |
| Brake Light | 1157(1978–1983) | 4 years | Consistent |
| Parking Light | 1157(1980–1983) 1157A(1978–1979) | 4 years | Changed |
| Turn Signal Rear | 1157(1978–1983) | 4 years | Consistent |
| Tail Light | 1157(1978–1983) 168(1979–1979) | 4 years | Changed |
| Dome Light | 906(1978–1980) 912(1983–1983) | 4 years | Changed |
| Map Light | 906(1978–1980) | 2 years | Consistent |
Common Zephyr Replacement Parts
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Frequently Asked Questions
We have bulb size data for the Mercury Zephyr from 1978 to 1983, covering 4 model years. Select your year below for a complete position-by-position bulb chart.
No, the Mercury Zephyr has used the H4656 low beam bulb consistently across all 4 model years in our database. Any year in the 1978–1983 range uses the same bulb.
The Mercury Zephyr uses a H4656 bulb for the low beam and a H4651 for the high beam. Select your year below for the exact fitment chart.
Yes. The Mercury Zephyr uses a H4656 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.