Ferrari Mondial t Headlight Bulb Size

The Ferrari Mondial t uses 9005 and 9006 bulb sizes for high beam and low beam headlight applications respectively, with H6024 as an alternative size option for both functions. The replacement chart covers 1989 through 1993 production years and documents 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

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
1991-1993	9005	HB3	Check Price
1989-1990	H6024	H6024	Check Price

Low Beam Headlight

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
1991-1993	9006	HB4	Check Price
1989-1990	H6024	H6024	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). 7-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6024	Check Price
ANSI standard (US & Canada). Single-filament halogen bulb with P22d base. 12V, 55W.	9006	Check Price

Other Locations

Additional Notes

The Ferrari Mondial t used two distinct headlight technologies across its production run, with 1989-1990 models using H6024 sealed beam units for both high and low beam functions, while 1991-1993 models used separate halogen bulbs for each function.
The H6024 is a 7-inch round sealed beam unit operating at 12V. Unlike conventional bulbs, the entire unit serves as both the lens and the light source, meaning the whole assembly is replaced rather than an individual bulb.
The 9005 bulb, used for high beam on the Ferrari Mondial t from 1991-1993, is a single-filament halogen type rated at 12V and 65W, fitted with a P20d base. It conforms to ANSI standards applicable in the US and Canada.
The 9006 bulb, used for low beam on 1991-1993 models, is also a single-filament halogen type rated at 12V but at a lower 55W output. It uses a P22d base, which differs physically from the P20d base of the 9005.
The P20d and P22d base types of the 9005 and 9006 are not interchangeable. The differing base configurations prevent incorrect installation between high and low beam sockets.
The wattage difference between the 9005 (65W) and 9006 (55W) reflects their respective roles. High beam circuits are designed to handle the higher wattage draw of the 9005, and substituting a 9005 into a 9006 socket is an electrical and fitment mismatch.
All three bulb types, the 9005, 9006, and H6024, conform to ANSI standards for the US and Canadian markets, indicating they meet defined photometric and dimensional requirements for those regions.