Used for: Back Up Reverse Light Bulb
Used for: Parking Light Bulb, Turn Signal Light Bulb Front
Used for: Side Marker Light Bulb Front
Used for: Turn Signal Light Bulb Rear
Used for: Interior Door Light Bulb
Used for: Trunk or Cargo Area Light
Used for: Trunk or Cargo Area Light
Used for: Vanity Mirror Light Bulb
This 2016 Acura RLX bulb size guide is designed to help you verify the correct bulb by lighting position before you buy replacements. Use it to match the bulb type to the exact lamp on your RLX, whether you are changing a headlight, interior light, parking lamp, or rear signal bulb.
The 2016 Acura RLX uses a mix of LED and replaceable bulb applications, and the correct fit can depend on the specific light location. Checking the bulb chart by position is the easiest way to avoid ordering the wrong part and to keep your lighting system working as intended.
Fitment can vary by trim, lighting package, market, and body style, so it is smart to compare the bulb in your car with the listing on this page before purchasing. Some exterior lights on the 2016 Acura RLX are LED assemblies, while others use serviceable bulbs such as 921, 168, 917, 168NA, 7440, 158, 1157A, and 24 depending on location. If you are considering an aftermarket LED conversion, make sure the bulb base, polarity, and physical clearance are correct, and remember that some conversions may require resistors or may not perform the same as factory lighting. When possible, inspect the installed bulb first so you can confirm the exact fitment and avoid unnecessary returns.
On this page, both the high beam and low beam headlight entries are listed as LED for the 2016 Acura RLX. That means the headlight setup is not shown here as a standard replaceable halogen bulb size.
The daytime running light bulb is listed as LED. In many cases that means the light is part of an LED assembly rather than a simple plug-in bulb, so verify the exact lamp before ordering parts.
The back up reverse light bulb is listed as 921 for the 2016 Acura RLX.
The rear turn signal light bulb is listed as 7440.
The front turn signal light bulb is listed as 1157A for the 2016 Acura RLX.
The parking light bulb is listed as 1157A.
The front side marker light bulb is listed as 168NA.
The rear side marker light bulb is listed as LED on this page, so it may be an integrated LED lamp rather than a standard replaceable bulb.
The license plate light bulb is listed as LED for the 2016 Acura RLX.
The trunk or cargo area light is listed with 168 and 917 bulb types.
The glove box light bulb is listed as LED.
The dome light bulb is listed as LED.
Yes. Trim level, lighting package, market, and body style can affect bulb fitment, especially on LED-equipped exterior lamps. Always confirm the exact lamp on your vehicle before buying.
Some locations may allow aftermarket LED conversions, but fitment, beam pattern, polarity, and error-free operation can vary. It is best to match the original bulb type and check whether resistors or adapters are needed.
Check the installed bulb, compare the socket base, and confirm the lighting position on the car. This is especially important on the 2016 Acura RLX because several exterior lights are LED assemblies and not all lamps use the same service part.
