The Lexus LS430 high beam headlight uses a 9005 bulb size while the low beam headlight requires either a D2S or D2R bulb size. The replacement chart covers 2001 through 2006 model years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Lexus LS430 uses the 9005 bulb across all model years (2001-2006) for the high beam headlight position. This bulb is an ANSI-standard single-filament halogen type rated at 12V and 65W, fitted with a P20d base.
The low beam headlight position on the LS430 shifted from the D2R bulb (2001-2003) to the D2S bulb (2004-2006), meaning two distinct HID bulb types are represented across the full production run of this model.
Both D2R and D2S are HID (xenon) discharge bulbs operating at 85V and 35W. Despite sharing identical electrical ratings, they are not interchangeable due to differing base configurations and housing compatibility requirements.
The D2S uses a P32d-2 base and is designed for projector-type headlight housings, while the D2R uses a P32d-3 base and is intended for reflector-type housings. Installing a D2S bulb in a reflector housing, or vice versa, produces incorrect light distribution.
Both D2S and D2R bulbs require an external ignitor to initiate the high-voltage arc necessary for operation. This ignitor is a separate component from the ballast and is not part of the bulb itself.
The 9005 halogen bulb and the D2-series HID bulbs operate on fundamentally different electrical principles. The 9005 runs on standard 12V automotive power, while the D2 variants require the elevated 85V supply generated by the HID ballast system.
The D2R and D2S designations follow the ECE (Economic Commission for Europe) standard, which is applied globally outside the United States and Canada. The 9005 follows the ANSI standard used in the US and Canada.
Because the LS430 uses HID technology for low beams and halogen for high beams, the two headlight circuits are electrically independent and draw power through separate systems within the vehicle.