Toyota Tundra Daytime Running Light Bulb Size

The Toyota Tundra daytime running light utilizes bulb size 4157NA or 5702AK depending on the specific configuration of the lighting assembly. Data for the lighting components covers the span from 2007 through 2020.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

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
2019-2020	4157NA (With Halogen Capsule Headlamps)	PY27/7W	Check Price
2018	5702AK	5702AK	Check Price
2013	4157NA	PY27/7W	Check Price
2012	5702AK	5702AK	Check Price
2009-2011	4157NA	PY27/7W	Check Price
2007-2008	5702AK	5702AK	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W.	4157NA	Check Price
Sylvania part number for a coated variant of the ANSI 3157 bulb. Dual-filament wedge bulb (T25), amber coating. 12V, 27W/7W.	5702AK	Check Price

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Additional Notes

The 4157NA is an ANSI-standardized dual-filament wedge bulb in the T25 form factor, rated at 12V with a 27W high-filament and 7W low-filament output. Its natural amber color comes from tinted glass rather than a surface coating.
The 5702AK shares the same T25 form factor and 12V, 27W/7W electrical ratings as the 4157NA but achieves its amber output through a coating applied over clear glass. It is a Sylvania-specific part number corresponding to the ANSI 3157 base type.
Although both bulbs occupy the same T25 wedge housing and carry identical voltage and wattage ratings, the 4157NA and 5702AK are not the same part. One uses natural amber glass and the other a coated variant, and the specifications list them for distinct model years rather than as interchangeable options.
The Toyota Tundra used the 5702AK for the daytime running light position in 2007-2008 and again in 2012 and 2018, while the 4157NA was specified for 2009-2011, 2013, and 2019-2020.
For the 2019-2020 Toyota Tundra, the 4157NA fitment applies specifically to vehicles equipped with halogen capsule headlamps, indicating that trim or package level affects which bulb is required.
The dual-filament design of both bulb types means each contains two separate tungsten filaments within a single envelope, allowing the daytime running light circuit to draw from one filament independently of the other.
The T25 wedge base is a press-fit connector type with no separate metal base pins, relying on the tapered plastic wedge to make electrical contact directly within the socket.
The natural amber glass of the 4157NA is inherently more resistant to coating wear over time than the applied amber finish of the 5702AK, as the color is part of the glass composition itself.