Honda Prelude Headlight Bulb Size

Honda Prelude headlight bulbs utilize H1, 9005, and 9006 bulb sizes depending on beam configuration and model year, with high beam applications requiring H1 or 9005 sizes and low beam applications using H1 or 9006 sizes. The replacement chart covers 1979 through 2001 production years with corresponding bulb size specifications for each generation.

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
1997-2001	H1	H1	Check Price
1992-1996	9005	HB3	Check Price
1979-1991	H6054	H6054	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
1997-2001	H1	H1	Check Price
1992-1996	9006	HB4	Check Price
1979-1991	H6054	H6054	Check Price

Bulb Specifications

Description	Type	Shop
ECE standard (Europe & worldwide). Single-filament halogen bulb with P14.5s base. Also approved in the US and Japan. 12V, 55W.	H1	Check Price
ANSI standard (US & Canada). Single-filament halogen bulb with P20d base. 12V, 65W.	9005	Check Price
ANSI standard (US & Canada). 5x7-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6054	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 H6054 is a 5x7-inch rectangular sealed beam unit governed by the ANSI standard used in the US and Canada. Unlike a conventional replaceable bulb, the entire unit is replaced when it fails. The Honda Prelude used this format for both high and low beam positions across the 1979-1991 model years.
The 9005 and 9006 bulbs are both ANSI-standard single-filament halogen types operating at 12V, but they differ in wattage and base type. The 9005 draws 65W and uses a P20d base for the high beam position, while the 9006 draws 55W and uses a P22d base for the low beam position. These two bulb types are not interchangeable despite their similar appearance.
The Honda Prelude (1992-1996) used separate bulb types for high and low beams, with the 9005 handling high beam output and the 9006 handling low beam output. Because the P20d and P22d bases are physically distinct, a 9006 cannot be seated in a 9005 socket without modification, and vice versa.
The H1 is an ECE-standard single-filament halogen bulb rated at 12V and 55W, fitted with a P14.5s base. It holds approval across European, US, and Japanese markets. For the 1997-2001 Prelude, the H1 served both the high beam and low beam positions, meaning a single bulb type covered both functions.
Because the H1 uses a P14.5s base while the 9005 uses a P20d base and the 9006 uses a P22d base, none of these three bulb types are physically interchangeable with one another. Each corresponds to a distinct socket design tied to a specific generation of the Prelude.
The H6054 sealed beam unit operates at 12V but has no published wattage rating in the specifications, as wattage is a characteristic of the internal filament rather than the sealed unit standard itself. Replacement involves sourcing a unit that matches the 5x7-inch rectangular form factor.
Across the full production span covered by the specifications, the Honda Prelude used three distinct headlight technologies: sealed beam units, ANSI-standard halogen bulbs, and ECE-standard halogen bulbs. Each technology is associated with a non-overlapping set of model years and is governed by a different regulatory standard.