Acura NSX 1991 Bulb Size
Bulb size chart
This 1991 Acura NSX bulb size guide is designed to help you verify the correct replacement bulb by lighting position, so you can match the right part before you buy. Because the NSX could vary by trim, market, and lighting package, it is smart to compare the bulb chart with the actual lamp on your car, especially for exterior bulbs and interior courtesy lights.
Use this page as a quick reference for common service points such as the headlights, tail lamps, turn signals, license plate lights, dome and map lights, and dash indicators. The 1991 Acura NSX uses a mix of halogen, incandescent, and LED applications, so checking each location separately helps avoid ordering the wrong bulb size or style.
For best fitment, confirm whether your NSX is equipped with factory halogen lighting or any aftermarket conversion, since that can change the bulb type needed at the front of the car. Trim and package differences may also affect interior and exterior lamp fitment, and some replacement bulbs may be listed as direct-fit equivalents while others are only comparable to the original. If you are upgrading to LED, make sure the bulb matches the socket and that the light output is suitable for the housing, because some aftermarket LED conversions can cause glare, warning issues, or uneven beam patterns. When possible, remove the installed bulb and compare the base, connector, and markings before purchasing a replacement.
FAQ
What bulb does the 1991 Acura NSX use for the high beam headlight?
The listed high beam headlight bulb is 9005 for the 1991 Acura NSX.
What are the brake light bulb sizes for this NSX?
The brake light bulb is listed as 2057R, and the outer tail light bulb is also listed as 2057R.
Which bulb fits the front turn signal on a 1991 Acura NSX?
The front turn signal light bulb is listed as 3497.
Which bulb fits the rear turn signal on this model year?
The rear turn signal light bulb is listed as 3497.
What bulb is used for the license plate lights?
The license plate light bulb is listed as 194 or 7441.
What is the bulb size for the front side marker lights?
The front side marker light bulb is listed as 168NA.
What is the bulb size for the rear side marker lights?
The rear side marker light bulb is listed as 168NA.
What bulb fits the back up reverse light on the 1991 Acura NSX?
The back up reverse light bulb is listed as 1156.
What bulb is used for the parking lights?
The parking light bulb is listed as 3652.
What bulb fits the front fog lights?
The front fog light bulb is listed as H3C or H3, depending on the setup.
What bulb is used for the dome and map lights?
Both the dome light and map light are listed as DE3022.
What bulb fits the glove box light?
The glove box light bulb is listed as DE3022.
What bulb is used for the trunk or cargo area light?
The trunk or cargo area light is listed as DE3021.
What bulb fits the interior door and stepwell lights?
The interior door light bulb and stepwell light bulb are both listed as DE3021.
What bulb is used for the instrument panel illumination?
The instrument panel light bulb is listed as 158.
What bulb fits the ash tray light on this NSX?
Two ash tray light options are shown: 2721 for one comparison listing and 74 for the other comparison listing. Check the installed bulb before ordering.
Does the 1991 Acura NSX use LED for the center high mount stop light?
The center high mount stop light bulb is listed as LED.
Why should I check the bulb on my car before buying replacements?
Because trim, market, body style, and lighting package can vary, the installed bulb is the best confirmation for fitment, especially on a 1991 Acura NSX with mixed interior and exterior bulb types.