Ford F-250 Fog Light Bulb Size

Additional Notes

• The Ford F-250 front fog light specifications cover model years 1994 through 1999, with three distinct bulb types appearing across that range: H3, 9006, and 9145.
• The H3 is an ECE-standard single-filament halogen bulb rated at 12V and 55W, fitted with a PK22s base. It holds ECE approval for European and worldwide markets and carries additional approval in the United States and Japan.
• The 9006 is an ANSI-standard single-filament halogen bulb rated at 12V and 55W, fitted with a P22d base. Its standardization applies to the US and Canadian markets.
• The 9145 is an ANSI-standard single-filament halogen bulb rated at 12V and 42W, fitted with a PY20d base. At 42W, it draws notably less power than both the 9006 and H3, which each operate at 55W.
• The Ford F-250 (1994-1996) uses the H3 bulb for the front fog light position.
• For 1997 and 1998, the front fog light specification shifts to the 9006 bulb.
• The 1999 model year lists two front fog light bulb sizes, the 9006 and the 9145, indicating that fitment varies within that year, likely depending on the specific trim or build configuration.
• Although the H3 and 9006 share the same 12V, 55W electrical rating, their bases differ. The H3 uses a PK22s base while the 9006 uses a P22d base, making them physically non-interchangeable despite identical wattage.
• The base type differences across all three bulbs, PK22s for H3, P22d for 9006, and PY20d for 9145, mean that no two of these bulb types are interchangeable with one another, regardless of any shared voltage or wattage values.
• The transition from the ECE-standard H3 to the ANSI-standard 9006 between the 1996 and 1997 model years reflects a change in the fog light socket design, as the two standards use incompatible base configurations.