Used for: Back Up Reverse Light Bulb
Used for: License Plate Light Bulb
Used for: License Plate Light Bulb
Used for: Parking Light Bulb(without adaptive lighting), Side Marker Light Bulb Front(without adaptive lighting)
Used for: Turn Signal Light Bulb Front(without adaptive lighting), Turn Signal Light Bulb Rear
Used for: Dome Light Bulb, Map Light Bulb, Trunk or Cargo Area Light
This 2019 Mazda CX-9 bulb size guide helps you verify the correct bulbs by lighting position, so you can replace only the lamp you need with confidence. Whether you are checking the headlights, tail lights, interior lamps, or license plate lights, this page organizes the fitment information by location to make bulb matching easier.
The 2019 Mazda CX-9 uses a mix of LED lighting and replaceable bulb types depending on the position and equipment level. That means the right bulb can vary by trim, market, and whether your CX-9 has adaptive lighting, so it is important to match the bulb to the exact light housing on your vehicle.
For the best fit, always compare your CX-9’s trim and lighting package before ordering. Some exterior lights are LED assemblies, while other positions use standard replaceable bulbs, and aftermarket conversions may change the bulb type or connector style. If your vehicle has adaptive lighting, do not assume the non-adaptive bulb listing will fit the same way. When possible, inspect the installed bulb before purchase and confirm the base, shape, and wattage or part number to avoid returns and installation issues.
The headlight high beam and low beam positions are listed as LED on this page. In many cases, that means the lighting is part of an LED assembly rather than a simple replaceable halogen bulb.
Yes. The front turn signal bulb is listed as LED for models with adaptive lighting, while non-adaptive versions use 7440A. Make sure you match the correct lighting package before buying.
For CX-9 models without adaptive lighting, the front parking light bulb is listed as 2827. This is one of the key fitment differences between adaptive and non-adaptive setups.
The rear turn signal bulb is listed as 7440A. This is a useful reference if you are replacing a rear signal lamp on this model year.
The back up reverse light bulb is listed as 921. If your reverse lamp is dim or out, this is the bulb size to check first.
The license plate light bulbs are listed as 2825 or 98. However, trim and market differences can still affect fitment, so it is smart to confirm the installed bulb before ordering.
The dome light, map light, and trunk or cargo area light are all listed as DE3175. That makes interior bulb replacement easier if you are servicing more than one lamp at once.
Yes. The brake light bulb and tail light bulb are both listed as LED on this page. In many cases, these are integrated LED lighting units rather than standard replaceable bulbs.
For models without adaptive lighting, the front side marker light bulb is listed as 2827. The same bulb type is also shown for the parking light in non-adaptive setups.
Yes. The rear side marker light bulb is listed as LED. This is another position where the CX-9 may use an LED assembly instead of a conventional bulb.
Sometimes, but not always with a direct fit. Aftermarket LED conversions may require extra parts, may not match beam pattern, and may not be legal in every market. Check the housing type and local regulations before converting.
Use the exact light position, then confirm whether your CX-9 has adaptive lighting, and finally compare the installed bulb or connector before purchase. That is the safest way to avoid buying the wrong part.
