Tesla Roadster Headlight Bulb Size

Tesla Roadster high beam headlight bulbs use 9005XS or H9 size, while low beam headlight bulbs use 9005XS size. The replacement chart covers 2008 through 2011 production years 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
2011	9005XS	HB3A	Check Price
2008-2010	H9	H9	Check Price

Low Beam Headlight

Years	US Type	EU Type	Shop
2008-2011	9005XS	HB3A	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament halogen bulb, straight 180-degree base variant. 12V, 65W.	9005XS	Check Price
ECE standard (Europe & worldwide). Single-filament halogen bulb with PGJ19-5 base. Also approved in the US. 12V, 65W.	H9	Check Price

Other Locations

Additional Notes

The H9 bulb follows the ECE standard used in Europe and worldwide, while the 9005XS follows the ANSI standard used in the US and Canada. Both operate at 12V and 65W, placing them in the same power class despite originating from different regulatory frameworks.
The H9 uses a PGJ19-5 base, a pin-style connector specific to ECE-regulated bulbs. The 9005XS uses a straight 180-degree base, which is characteristic of the ANSI single-filament halogen family. These base types are not interchangeable.
Both the H9 and 9005XS are single-filament halogen bulbs, meaning each serves only one lighting function, either high beam or low beam, rather than combining both in a single unit.
The Tesla Roadster high beam position used the H9 bulb across the 2008-2010 model years, then transitioned to the 9005XS for the 2011 model year.
The low beam position of the Tesla Roadster used the 9005XS across all four model years covered in the specifications, from 2008-2011.
In the 2011 model year, both the high beam and low beam positions share the 9005XS bulb type, making that year the only one in the specifications where a single bulb type covers both headlight functions.
The H9 bulb carries US approval despite its ECE origins, which reflects its regulatory acceptance across multiple markets rather than being restricted to European applications.