Toyota 86 Map Light Bulb Size

The Toyota 86 map light requires a DE3175 bulb size for the interior lighting system. Data for the specific component covers the range from 2017 through 2019.

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

Years	Bulb Size
2019	DE3175
2018	DE3175 (Center)
2017	DE3175

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175

Other Locations

Additional Notes

The DE3175 is a festoon-type bulb, meaning it is cylindrical in shape with flat metal contacts at each end rather than a traditional base. It operates at 12 volts and follows a 31mm length standard as defined by ANSI specifications applicable in the US and Canada.
The Toyota 86 uses the DE3175 bulb for the map light across the 2017-2019 model years.
The 2018 specification notes the DE3175 as the Center position fitment, indicating the map light assembly in that year contains a designated center lamp position for this bulb.
The 31mm length of the DE3175 is a critical fitment factor for festoon bulbs, as the end-cap contacts must bridge the socket holders at a fixed span. A bulb of a different length will not make proper contact or will not seat securely.