Lexus GS350 Headlight Bulb Size

The Lexus GS350 high beam headlight uses a D4S bulb size, while the low beam headlight requires a D4S bulb size as an alternative specification. The replacement chart covers vehicle production years spanning 2007 to 2015 with corresponding bulb size data.

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
2013-2015	D4S	D4S	Check Price
2007-2011	9005	HB3	Check Price

Low Beam Headlight

Years	Bulb Type	Shop
2013-2015	D4S	Check Price
2007-2011	D4S	Check Price

Bulb Specifications

Description	Type	Shop
ECE standard (Europe & worldwide). Mercury-free HID (xenon) discharge bulb with P32d-5 base, for projector-type housings. 42V, 35W.	D4S	Check Price
ANSI standard (US & Canada). Single-filament halogen bulb with P20d base. 12V, 65W.	9005	Check Price

Other Locations

Additional Notes

The D4S is a mercury-free HID (xenon) discharge bulb rated at 42V and 35W, built to the ECE standard used in Europe and worldwide markets. It uses a P32d-5 base and is designed specifically for projector-type headlight housings.
The 9005 is a single-filament halogen bulb rated at 12V and 65W, conforming to the ANSI standard used in the US and Canada. It uses a P20d base, which is physically incompatible with the P32d-5 base of the D4S.
The Lexus GS350 uses the D4S for the low beam headlight across all listed model years, spanning 2007-2015.
For the high beam headlight, the GS350 uses two different bulb types depending on the model year. The 9005 halogen bulb is specified for 2007-2011, while the D4S HID bulb is specified for 2013-2015.
The 2013-2015 GS350 uses the D4S for both high beam and low beam headlights, meaning both positions operate on HID technology with identical bulb fitment.
The 2007-2011 GS350 uses a mixed headlight configuration, pairing a 9005 halogen high beam with a D4S HID low beam. These two bulb types are not interchangeable due to differences in base design, voltage, and wattage.
The voltage difference between the D4S (42V) and the 9005 (12V) reflects a fundamental electrical incompatibility. HID systems require a ballast to generate the high voltage needed to strike and sustain the xenon arc, while halogen systems operate directly on standard automotive 12V circuits.