Chevrolet Blazer 2004 Bulb Size
Bulb size chart
This 2004 Chevrolet Blazer bulb size page helps you verify the correct bulb by lighting position, so you can match the right part before you buy. Whether you are replacing a headlight, brake light, dome light, or a small interior lamp, checking the location-specific bulb listing is the easiest way to avoid a mismatch.
Use this guide as a quick reference for common exterior and interior bulbs on the 2004 Chevrolet Blazer. The chart includes sizes for key locations such as the high beam headlight, front and rear turn signals, tail and brake lights, license plate lights, map lights, and cargo area lighting.
Fitment can vary by trim, lighting package, market, and body style, so it is smart to confirm the bulb already installed in your Blazer before ordering. Some positions may use halogen bulbs from the factory, while others can be upgraded to LED if the bulb type and housing allow it. If you are considering an aftermarket conversion, make sure the bulb base, polarity, and heat output are compatible with the vehicle and the lamp assembly. For the most reliable result, compare the old bulb to the replacement and check the socket shape, connector style, and any markings on the original bulb before purchase.
FAQ
What bulb does the 2004 Chevrolet Blazer use for the high beam headlight?
The listed high beam headlight bulb is 9005. This page is organized by lighting position, so you can confirm the correct bulb for the high beam before replacing it.
What is the brake light bulb size for a 2004 Chevrolet Blazer?
The brake light bulb is listed as 3057R. If you are replacing the rear brake lamps, match that bulb size to the correct socket on the vehicle.
What bulb fits the tail light on this model year?
The tail light bulb is 3057R. On this Blazer, the tail light and brake light listings are separate, so it is worth checking both positions before ordering.
What is the rear turn signal bulb size?
The rear turn signal bulb is 3057. This differs from the brake and tail light bulb listing, so be sure to verify the rear lamp position specifically.
What bulb is used for the front turn signal and parking light?
Both the front turn signal light and the front parking light are listed as 3157. That makes it easier to replace either front lamp with the same bulb type when applicable.
What is the back up reverse light bulb for a 2004 Chevrolet Blazer?
The back up reverse light bulb is 3156. This is the bulb to check if the reverse lamps are dim or burned out.
What bulb does the front side marker use?
The front side marker light bulb is 194NA. This is a specific amber-style fitment for the front marker position.
What are the fog light bulb options for the LS trim?
The front fog light bulb is listed as 881 for LS, and there is also an 880 option shown for Xtreme. Because trim and package differences can affect fitment, confirm which fog lamp setup your Blazer has before buying.
What bulb size is used for the license plate lights?
The license plate light bulb is listed as 194 or 7441. Either size may appear in the chart for this position, so check the installed bulb and socket style for the best match.
What bulb fits the dome light on this vehicle?
The dome light is listed with two original-style options: 562 and 564. Since interior lighting can vary, verify the bulb currently in your dome lamp before replacing it.
What bulb is used for the map light?
The map light has multiple listed options, including 194 or 7441, and also 212-2. The correct choice depends on the specific overhead console or lamp configuration in your Blazer.
What bulb fits the instrument panel lights?
The instrument panel light listings include 161, 37, PC74, and PC168 depending on the exact location. Because several dash illumination points can use different bulbs, match the bulb to the specific panel position.
Can I switch the interior bulbs to LED on a 2004 Chevrolet Blazer?
Yes, some owners replace interior bulbs with LED equivalents, but the fit depends on the socket and the lamp housing. Check the bulb base and the installed bulb first, and make sure the LED will work correctly in that location.
Why does the bulb size page separate lighting by position?
Different lamps on the 2004 Chevrolet Blazer use different bulb sizes, even when they are close together on the vehicle. Organizing the page by position helps you verify the exact bulb for each light without guessing.
Should I check the old bulb before ordering a replacement?
Yes. Checking the installed bulb is the safest way to confirm fitment, especially on a vehicle like the 2004 Chevrolet Blazer where trim, package, and body-style differences can change certain bulb applications.