Factory setup not specified in fitment source

2010 Lexus IS350 Headlights & Factory LED Guide

Choose the factory headlight system below to see the correct bulb and recommendation path for this 2010 Lexus IS350.

Low beam
Integrated LED
High beam
Integrated LED
Factory setup
Factory setup not specified in fitment source

Choose the factory system installed in this vehicle. Bulb sizes and recommendations change with that selection.

2010 Lexus IS350 representative vehicle image

Factory system guidance

Integrated LED headlights are not conventional replaceable-bulb systems. The performance results above describe the selected factory configuration.

Factory setup not specified in fitment source

High Beam: Integrated LED

Keep the factory system

The main headlights use integrated factory LEDs, not conventional replaceable bulbs. Diagnose aim, wiring, modules, moisture, and the assembly before ordering service parts by VIN.

Other bulbs

Available exterior and interior lighting data for this model year.

Brake Light
Integrated LEDIntegrated / non-replaceable
Cargo / Trunk Light
168Possible fitment — verify installed bulb
Dome Light
175Possible fitment — verify installed bulb
Door Light
168Possible fitment — verify installed bulb
Daytime Running Light
Integrated LEDIntegrated / non-replaceable
Footwell Light
194Possible fitment — verify installed bulb
Front Turn Signal
7444NAPossible fitment — verify installed bulb
Glove Box Light
Integrated LEDIntegrated / non-replaceable
License Plate Light
Integrated LEDIntegrated / non-replaceable
Parking Light
7444NAPossible fitment — verify installed bulb
Rear Side Marker
Integrated LEDIntegrated / non-replaceable
Rear Turn Signal
7440NAPossible fitment — verify installed bulb
Technical details and sources

Fitment, factory-system research, and BulbFacts product tests remain separate evidence. A matching bulb size does not by itself make a conversion a vehicle-specific recommendation.

PositionBulb or systemEvidence status
High BeamFactory setup not specified in fitment sourceIntegrated LEDIntegrated / non-replaceable
Low BeamLighting: LEDIntegrated LEDIntegrated / non-replaceable

Each model year opens its own BulbFacts record. Bulb sizes and factory systems are not carried over from adjacent years.

Fitment note: Verify the installed bulb, connector, housing, and factory system before ordering. A bulb-size match is not automatically a conversion recommendation or proof of vehicle-specific testing.