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Mazda CX-9 2012 Bulb Size
Bulb size chart
Headlight Bulb High Beam - 9005
Headlight Bulb Low Beam(with halogen headlights) - H11
Headlight Bulb Low Beam(with HID headlights) - D2S
Back Up Reverse Light Bulb - 7440
Brake Light Bulb - LED
Center High Mount Stop Light Bulb - LED
License Plate Light Bulb - 2825, 98
Parking Light Bulb - 2825, 98
Side Marker Light Bulb Front - 2827
Side Marker Light Bulb Rear - 2825, 98
Tail Light Bulb - LED
Turn Signal Light Bulb Front - 7440A
Turn Signal Light Bulb Rear - 7440A
Courtesy Light Bulb - 2825, 98
Dome Light Bulb - DE3175
Map Light Bulb - DE3175
Trunk or Cargo Area Light - DE3175
9005 Bulbs
Used for: Headlight Bulb High Beam
H11 Bulbs
Used for: Headlight Bulb Low Beam(with halogen headlights)
D2S Bulbs
Used for: Headlight Bulb Low Beam(with HID headlights)
7440 Bulbs
Used for: Back Up Reverse Light Bulb
2825 Bulbs
Used for: License Plate Light Bulb, Parking Light Bulb, Side Marker Light Bulb Rear, Courtesy Light Bulb
98 Bulbs
Used for: License Plate Light Bulb, Parking Light Bulb, Side Marker Light Bulb Rear, Courtesy Light Bulb
2827 Bulbs
Used for: Side Marker Light Bulb Front
7440A Bulbs
Used for: Turn Signal Light Bulb Front, Turn Signal Light Bulb Rear
DE3175 Bulbs
Used for: Dome Light Bulb, Map Light Bulb, Trunk or Cargo Area Light
This page for the 2012 Mazda CX-9 helps you verify bulb sizes by lighting position, so you can match the correct replacement to each lamp on the vehicle. Whether you are replacing a headlight, interior bulb, or exterior marker light, using the right socket and bulb type saves time and avoids fitment problems.
The 2012 Mazda CX-9 uses a mix of halogen, HID, and LED lighting depending on trim and equipment. That means the correct bulb can vary by location and by the vehicle’s original lighting package, so it is important to check the bulb chart by position before ordering parts.
Fitment can vary by market, trim, and body style, especially on this CX-9 year where some models use halogen low beams and others use HID low beams. If your vehicle has been modified with aftermarket LED or HID conversions, the installed bulb may not match the original factory listing, so always confirm what is actually in the housing before you buy replacements. For the most reliable result, compare the bulb in your vehicle with the chart, inspect the connector and base style, and verify whether the lamp is a direct replacement or part of a conversion kit. This is especially useful for exterior lights such as the low beam, high beam, turn signal, parking light, and reverse light positions.
FAQ
What bulb size does the 2012 Mazda CX-9 use for the low beam headlight with halogen headlights?
For CX-9 models equipped with halogen headlights, the low beam bulb is H11.
What bulb size does the 2012 Mazda CX-9 use for the low beam headlight with HID headlights?
For CX-9 models equipped with HID headlights, the low beam bulb is D2S.
What is the high beam bulb size on the 2012 Mazda CX-9?
The high beam headlight bulb is 9005.
What bulb does the front turn signal use on the 2012 Mazda CX-9?
The front turn signal light bulb is 7440A.
What bulb does the rear turn signal use on the 2012 Mazda CX-9?
The rear turn signal light bulb is 7440A.
What bulb size is used for the back up reverse light on the 2012 Mazda CX-9?
The back up reverse light bulb is 7440.
What bulb fits the front side marker light on the 2012 Mazda CX-9?
The front side marker light bulb is 2827.
What bulb fits the rear side marker light on the 2012 Mazda CX-9?
The rear side marker light bulb is 2825, 98.
What bulb size is used for the license plate lights on the 2012 Mazda CX-9?
The license plate light bulb is 2825, 98.
What bulb is used for the parking lights on the 2012 Mazda CX-9?
The parking light bulb is 2825, 98.
What bulb is used for the courtesy lights on the 2012 Mazda CX-9?
The courtesy light bulb is 2825, 98.
What bulb size is used for the dome, map, and cargo area lights?
The dome light bulb, map light bulb, and trunk or cargo area light bulb are all DE3175.
Are the brake light, tail light, and center high mount stop light bulbs listed as standard bulb numbers on this page?
On this page, those positions are listed as LED rather than a separate standard bulb number, so you should match the lighting setup on the vehicle before ordering.
Why should I check the installed bulb before buying a replacement for my 2012 Mazda CX-9?
Because trim and lighting package differences can change the correct bulb, and aftermarket conversions may not match the factory setup. Checking the installed bulb helps confirm the exact fit before purchase.