Lexus RX300 Headlight Bulb Size

The Lexus RX300 headlight bulb size specifications include 9005 and 9006 options for high beam applications, with 9006 and D2R sizes available for low beam functions. The replacement chart covers 1999 to 2003 model years and documents bulb size data across the vehicle production range.

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
2001-2003	9005	HB3	Check Price
2000	9005	HB3	Check Price
2000	9006 (Halogen)	HB4	Check Price
1999	9005	HB3	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
2001-2003	D2R (With HID Headlamps)	D2R	Check Price
2001-2003	9006 (With Halogen Capsule Headlamps)	HB4	Check Price
1999-2000	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
ECE standard (Europe & worldwide). HID (xenon) discharge bulb with P32d-3 base, for reflector-type housings. Requires external ignitor. 85V, 35W.	D2R	Check Price

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Additional Notes

The 9005 bulb is an ANSI-standard single-filament halogen type rated at 12V and 65W, fitted with a P20d base. It serves as the high beam headlight across all Lexus RX300 model years covered in these specifications, spanning 1999-2003.
The 9006 bulb is also an ANSI-standard single-filament halogen type, rated at 12V and 55W with a P22d base. It draws 10 watts less than the 9005 and is the predominant low beam bulb across the RX300 range.
The D2R is an ECE-standard HID (xenon) discharge bulb operating at 85V and 35W, fitted with a P32d-3 base. Unlike the halogen types, it requires an external ignitor to initiate the electrical arc that produces light.
The D2R designation includes an "R" suffix, indicating it is specifically designed for reflector-type headlamp housings rather than projector-type units. Using a projector-specific bulb in a reflector housing, or vice versa, produces incorrect beam patterns.
For the 2001-2003 Lexus RX300, the low beam position accepts either a 9006 or a D2R depending on whether the vehicle was equipped with halogen capsule headlamps or HID headlamps. These two systems are not interchangeable, as HID operation requires high-voltage ignition hardware absent in halogen-equipped vehicles.
The year 2000 Lexus RX300 carries two separate entries for the high beam position: a 9005 and a 9006 (Halogen). The 9005 and 9006 use different base types, P20d and P22d respectively, meaning they are not physically interchangeable despite both being single-filament halogen bulbs.