Ferrari 348 GTB Headlight Bulb Size

Ferrari 348 GTB high beam headlight bulbs measure 9005 in size, while low beam headlight bulbs measure 9006 in size. The replacement chart covers 1993 to 1994 model years with corresponding bulb size specifications.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

High Beam Headlight

Years	US Type	EU Type	Shop
1993-1994	9005	HB3	Check Price

Low Beam Headlight

Years	US Type	EU Type	Shop
1993-1994	9006	HB4	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament halogen bulb with P20d base. 12V, 65W.	9005	Check Price
ANSI standard (US & Canada). Single-filament halogen bulb with P22d base. 12V, 55W.	9006	Check Price

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Additional Notes

The Ferrari 348 GTB uses the 9005 bulb for high beam headlights across the 1993-1994 model years, and the 9006 bulb for low beam headlights across the same span.
Both the 9005 and 9006 are ANSI-standardized halogen bulb types, meaning their physical and electrical specifications are governed by a North American industry standard applicable in the United States and Canada.
The 9005 is a single-filament halogen bulb operating at 12 volts and 65 watts, fitted with a P20d base.
The 9006 is a single-filament halogen bulb operating at 12 volts and 55 watts, fitted with a P22d base.
Although the 9005 and 9006 share the same voltage rating and a visually similar form, their base types differ: the 9005 uses a P20d base while the 9006 uses a P22d base, making the two bulbs non-interchangeable despite their outward resemblance.
The wattage difference between the two bulbs reflects their intended roles: the higher-wattage 9005 produces greater light output suited to high beam use, while the lower-wattage 9006 is calibrated for the controlled beam pattern required in low beam applications.