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Forward Lighting
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Exterior Lighting
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Interior Lighting
2020 Chevrolet Blazer Headlight Bulb Size
The 2020 Chevrolet Blazer headlight bulb size is H11 for the low beams, 9005 for the high beams, and H11 for the fog lights, making it straightforward to upgrade the lighting on Chevy's boldest midsize crossover. For 2020, Chevrolet expanded the Blazer lineup with a new 2.0-liter turbocharged engine and an SS-like front end treatment that sharpened the already aggressive styling. Halogen headlights come standard on the L and LT, while the RS and Premier feature factory LED units with signature lighting accents. Swapping in 2020 Chevrolet Blazer LED headlights on the halogen trims delivers the same striking white output that makes the premium models stand out at night.
The 2020 Blazer sits near the top of search results for good reason — it is one of the most visually distinctive crossovers in its class, and owners want headlights that reinforce that presence. The halogen bulbs that ship on the base trims simply do not match the vehicle's design language. LED or HID conversion kits solve that problem in under 30 minutes. Every HID Nation kit includes free shipping and a lifetime warranty.
LED and HID Options for the 2020 Chevrolet Blazer
An LED conversion kit for the 2020 Blazer fits the factory H11 low beam socket with no rewiring or housing changes. The bulb locks in with the same twist mechanism as the halogen, and the LED driver is compact enough to sit behind the headlight assembly without interfering with the dust cover. Output shifts immediately to a clean 6000K white that transforms the Blazer's front end after dark. Because the fog lights also use H11, upgrading all four positions at once gives you a fully matched white appearance across the entire front lighting array.
HID xenon kits appeal to Blazer owners who want maximum beam projection for nighttime highway cruising. The xenon arc creates a wider, denser beam pattern that pushes light further down the road. Each HID bulb connects to a slim ballast that tucks into the engine bay. Installation is slightly longer than LED at around 35 to 40 minutes for both sides, but the increased throw distance is worth the extra time for drivers who regularly cover long distances after dark.
All HID Nation kits ship free with a lifetime warranty. If a bulb or component fails, we replace it at no charge for as long as you own the vehicle.
Frequently Asked Questions
What is the 2020 Chevrolet Blazer headlight bulb size?
The 2020 Chevrolet Blazer uses H11 bulbs for the low beams, 9005 bulbs for the high beams, and H11 bulbs for the fog lights. This applies to the halogen-equipped L and LT trims. The RS and Premier trims feature factory LED headlights with integrated modules that are not bulb-replaceable. Both the low beam and fog light positions share the H11 size, so one LED bulb type covers four front positions on halogen models.
Does the 2020 Blazer with the 2.0T engine use different headlight bulbs?
No. The 2020 Blazer uses the same H11 low beam, 9005 high beam, and H11 fog light bulbs regardless of whether you have the 2.5-liter four-cylinder, the 3.6-liter V6, or the new 2.0-liter turbocharged engine. The powertrain does not affect the headlight fitment. Any LED or HID kit designed for the 2020 Blazer will work across all engine configurations.
How do I know if my 2020 Blazer has halogen or factory LED headlights?
Turn on your headlights and look at the color of the output. Factory halogen bulbs produce a warm yellowish glow, while the factory LED units on the RS and Premier emit a bright white. You can also check the trim badge on the tailgate or look up the window sticker. If your Blazer is an L or LT without the optional LED headlight package, it has halogen bulbs and is a candidate for an LED or HID conversion kit.
Can I upgrade just the fog lights to LED on the 2020 Blazer?
You can, but we recommend upgrading the headlights and fog lights together since both use H11 bulbs. Installing LED fog lights alongside halogen headlights creates an obvious color mismatch — white fogs under yellow headlights looks inconsistent. Starting with the low beam headlights has the biggest visual impact, and since the fog lights use the same H11 bulb, adding them at the same time only takes a few extra minutes.
Are the 2020 and 2019 Blazer headlight bulbs interchangeable?
Yes. The 2019 and 2020 Chevrolet Blazer share identical headlight housings and the same bulb fitment across all positions: H11 low beam, 9005 high beam, and H11 fog light. The 2020 model added the 2.0T engine option and minor styling updates, but the headlight assembly carried over unchanged. An LED or HID kit purchased for either model year will fit the other perfectly.