Lexus IS350 Headlight Bulb Size

The Lexus IS350 high beam headlight uses a D4S or 9005 bulb size, while the low beam headlight requires a D4S or H11 bulb size. The replacement chart covers vehicle production years spanning 2006 to 2016 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

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
2016	D4S (With HID Headlamps)	D4S	Check Price
2006-2009	9005	HB3	Check Price

Low Beam Headlight

Years	Bulb Type	Shop
2016	D4S (With HID Headlamps)	Check Price
2006-2009	D4S (With HID Headlamps)	Check Price
2006-2009	H11 (With Halogen Capsule Headlamps)	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
ECE standard (Europe & worldwide). Single-filament halogen bulb with PGJ19-2 base. Also approved in the US. 12V, 55W.	H11	Check Price

Other Locations

Additional Notes

The D4S bulb is the most frequently specified type across these Lexus IS350 headlight positions, appearing in both high beam and low beam roles for the 2016 model year and as one of two low beam options for 2006-2009.
The D4S operates at 42V and 35W, functioning as a mercury-free high-intensity discharge xenon bulb with a P32d-5 base. It conforms to ECE standards and is designed exclusively for projector-type housings.
For the 2006-2009 Lexus IS350, low beam fitment depends on headlamp system type. Vehicles equipped with HID headlamps use the D4S, while those with halogen capsule headlamps use the H11. These two bulbs are not interchangeable.
The H11 is a single-filament halogen bulb rated at 12V and 55W, using a PGJ19-2 base. It carries ECE certification and holds additional approval for use in the United States.
The 9005 bulb is specified only for the high beam position on the 2006-2009 IS350 models that do not carry HID headlamps. It is an ANSI-standard single-filament halogen type with a P20d base, rated at 12V and 65W.
The 9005 and H11 share the same 12V operating voltage but differ in wattage, base type, and governing standard. The 9005 follows ANSI specifications, while the H11 follows ECE specifications, and the two bases are physically incompatible.
The 2016 IS350 with HID headlamps uses the D4S for both high beam and low beam positions, meaning a single bulb type serves the entire headlamp system on that configuration.
The high beam position on the 2006-2009 IS350 carries no HID option in these specifications. The 9005 halogen bulb is the sole high beam fitment listed for those years, regardless of whether the low beam uses HID or halogen.