SYLVANIA - DE3175 31mm Festoon LED White
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Mazda Mazda6 2021 Bulb Size
Bulb size chart
Headlight Bulb High Beam and Low Beam - LED
Back Up Reverse Light Bulb - LED
Brake Light Bulb - LED
Center High Mount Stop Light Bulb - LED
Daytime Running Light Bulb - LED
License Plate Light Bulb - LED
Parking Light Bulb - LED
Side Marker Light Bulb Front - LED
Side Marker Light Bulb Rear - LED
Tail Light Bulb - LED
Turn Signal Light Bulb Front - LED
Turn Signal Light Bulb Rear - LED
Dome Light Bulb - DE3175
Map Light Bulb - DE3175
Trunk or Cargo Area Light - 194, 7441
DE3175 Bulbs
Used for: Dome Light Bulb, Map Light Bulb
194 Bulbs
Used for: Trunk or Cargo Area Light
7441 Bulbs
Used for: Trunk or Cargo Area Light
The 2021 Mazda Mazda6 uses a mostly LED lighting setup, but bulb fitment can still vary by position, trim, market, and body style. This page helps you verify bulb sizes by lighting position so you can match the correct replacement for the front, rear, interior, and cargo-area lights.
Use the bulb chart on this page as a quick reference when checking the 2021 Mazda Mazda6. Even when many exterior lamps are LED, some interior and utility lights may still use replaceable bulb types, so confirming the exact location is the safest way to order the right part.
Fitment can differ between trims and lighting packages, especially if your Mazda6 was built for a different market or has factory LED equipment versus a halogen-style setup in certain positions. Before buying, compare the installed bulb, connector, and housing style with the chart, and remember that aftermarket LED conversions may not match the original beam pattern, brightness, or error-free operation. If your car has already been modified, the bulb listed for the factory configuration may not be the one currently installed, so it is smart to inspect the bulb before purchase.
FAQ
Does the 2021 Mazda Mazda6 use LED headlights?
Yes. The bulb chart for this model year lists the high beam and low beam headlight bulbs as LED.
Are the brake lights on the 2021 Mazda Mazda6 replaceable bulbs?
The chart shows the brake light bulb as LED. Depending on the lamp design, replacement may involve the LED module or the complete lamp assembly rather than a simple loose bulb.
What bulb type is used for the license plate light on the 2021 Mazda Mazda6?
The license plate light bulb is listed as LED for this year and model.
Which interior bulbs are still serviceable on the 2021 Mazda Mazda6?
The trunk or cargo area light uses 194 or 7441, and the dome light and map light use DE3175. Those are the main replaceable interior bulb types shown on this page.
Do all 2021 Mazda Mazda6 trims use the same bulb sizes?
Not always. Trim level, lighting package, body style, and market can change the exact lamp setup, so it is best to verify the bulb position on your specific car.
What should I check before replacing a bulb on my Mazda6?
Check the bulb location, the base style, whether the lamp is LED or replaceable, and the physical shape of the installed bulb. Matching the old bulb is the safest way to avoid ordering the wrong part.
Can I swap a factory LED exterior light for a standard bulb?
Usually no. If the 2021 Mazda Mazda6 uses an LED lamp for that position, the housing is typically designed around the LED assembly and may not accept a standard bulb without modification.
Are the front and rear turn signal bulbs the same on this model?
Both front and rear turn signal lights are listed as LED, but that does not automatically mean the same part or module is used in both locations. Check each position separately.
What bulb is used for the dome light in the 2021 Mazda Mazda6?
The dome light bulb is listed as DE3175.
What bulb is used for the map lights in the 2021 Mazda Mazda6?
The map light bulb is listed as DE3175, and it is noted as optional in the bulb chart.
Is the back-up reverse light on the 2021 Mazda Mazda6 an LED bulb?
Yes. The back-up reverse light bulb is listed as LED.
Why should I verify bulb size by lighting position instead of buying a full kit?
Because the 2021 Mazda Mazda6 can use different bulb types in different locations. Verifying by position helps you replace only the correct bulb and avoid mismatches between exterior, interior, and cargo-area lighting.