2020 Toyota Tundra Headlight Bulb Size
Low beam
9003
High beam
9003
Order
2 × 9003
Your 9003 uses one bulb per side that handles both low and high beam — a dual-filament 9003. Two bulbs covers the whole front end.
The 2014–2021 Tundra uses these same bulbs — your 2020 sits in the middle of that run. See all Tundra years.
2020 Toyota Tundra bulb chart
| Position | Bulb | Notes |
|---|---|---|
| Low beam | 9003 |
Shared with high beam — one bulb does both. |
| High beam | 9003 |
Same bulb as low beam. |
Trim warning
TRD Pro, 1794, and Platinum trims came with factory LED headlamps - no replaceable bulb.
Verified against factory service data and OEM bulb references.
Parts that fit the 2020 Toyota Tundra
Other vehicles that use the 9003
These take the same low beam bulb, so the same bulb fits — only the housing differs.