Acura RLX 2018 Bulb Size
Bulb size chart
This page covers bulb sizes for the 2018 Acura RLX and organizes the information by lighting position so you can quickly find the right replacement. Whether you are checking a headlight, interior lamp, or rear signal, the goal is to help you verify the bulb size before you buy.
The 2018 Acura RLX uses a mix of LED lighting and traditional bulb types depending on the location and configuration. Because trim level, market, and lighting package can change the fitment, it is best to match the bulb chart to the exact light on your vehicle rather than relying on a single universal part number.
For the best fitment results, compare your RLX’s installed bulb to the chart before ordering, especially if your car has different equipment by trim or region. Some positions are LED assemblies, while others may use halogen-style or incandescent bulbs, and aftermarket LED conversions can change the socket, polarity, or beam pattern. If you are replacing a bulb that looks similar to another one, confirm the base and function carefully, since front and rear signals, parking lights, and backup lights may have different options depending on the original setup. When in doubt, remove the old bulb and verify the marking on the glass or base before purchase.
FAQ
What bulb size does the 2018 Acura RLX use for the low beam headlight?
The chart for the 2018 Acura RLX lists the low beam headlight as LED. Because the headlight system is integrated, you should verify the exact lamp assembly on your vehicle before ordering any replacement parts.
What bulb size does the 2018 Acura RLX use for the high beam headlight?
The chart lists the high beam headlight as LED. On this model, the headlight setup may vary by lighting package, so it is important to match the bulb position on the vehicle to the chart entry.
Does the 2018 Acura RLX have LED fog lights?
Yes. The front fog light bulb is listed as LED for the 2018 Acura RLX.
What is the license plate light bulb size for the 2018 Acura RLX?
The license plate light bulb is listed as LED on the 2018 Acura RLX.
What bulb does the 2018 Acura RLX use for the trunk or cargo area light?
The trunk or cargo area light uses bulb types 168 or 917 on the 2018 Acura RLX, according to the chart.
What bulb size is used for the vanity mirror light on the 2018 Acura RLX?
The vanity mirror light bulb is listed as 24 for the 2018 Acura RLX.
What bulb does the rear turn signal use on the 2018 Acura RLX?
The chart shows two rear turn signal options for the 2018 Acura RLX: LED for one configuration, and 7440 for the original-style option. Check the installed bulb and the vehicle’s lighting package before buying.
What bulb does the front turn signal use on the 2018 Acura RLX?
The front turn signal is listed as LED for one configuration, and 1157A for the original-style option. The correct fit depends on the exact lighting setup on your RLX.
What bulb size is used for the backup light on the 2018 Acura RLX?
The backup light is listed as LED for one configuration, and 921 for the original-style option. Confirm which version is installed on your car before replacement.
Are the dome light and map light bulbs LED on the 2018 Acura RLX?
Yes. The dome light bulb and map light bulb are both listed as LED for the 2018 Acura RLX.
What bulb does the glove box light use on the 2018 Acura RLX?
The glove box light bulb is listed as LED on the 2018 Acura RLX.
Can trim level or market change the bulb fitment on a 2018 Acura RLX?
Yes. Trim, lighting package, market, and body style can affect bulb fitment on the 2018 Acura RLX, especially for exterior lighting and LED-equipped assemblies.