Chevrolet Blazer Headlight Bulb Size
Find low beam, high beam, and fog light bulb sizes for the Chevrolet Blazer by year and trim. OEM fitment data from the factory service manual with replacement tips and warnings.
Last updated: 2026-11-07 • Reading time: 8 min • By AllOEMManuals Editorial Team
Quick Answer
The Chevrolet Blazer headlight bulb size varies by year and trim. Check your owner's manual or existing bulb for the exact part number.
| Generation | Years | Top spec |
|---|---|---|
| 2020-2025 | 2020-2025 | Varies by year — check existing bulb |
| 2014-2019 | 2014-2019 | Varies by year — check existing bulb |
| 2008-2013 | 2008-2013 | Varies by year — check existing bulb |
This vehicle's factory manual
Chevrolet Blazer: choose your year, then confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Chevrolet Blazer maintenance schedule
Know the exact headlight bulb size job for your Chevrolet Blazer
The Chevrolet Blazer headlight bulb size varies by year and trim. Check your owner's manual or existing bulb for the exact part number.
Bulb size can change between reflector, projector, HID, LED, and market-specific housings. Once the spec is confirmed, use the supplies and purchase links below to build the full one-trip shopping list before you start the repair.
Exact Vehicle Check
The button opens the factory book for this vehicle. Use the engine picker only when your trim is not the one this page already matched.
2008-2013
Representative 2008 manual branch for 2008-2013
External Pages
TrailBlazer 4.2 S, 4WD
External Pages — 2008 Chevrolet TrailBlazer 4.2 S, 4WD Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagined Home >> Chevrolet >> 2008 >> TrailBlazer 4.2 S, 4WD >>...
Open factory section →External Pages
TrailBlazer 4.2 S, RWD
External Pages — 2008 Chevrolet TrailBlazer 4.2 S, RWD Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagined Home >> Chevrolet >> 2008 >> TrailBlazer 4.2 S, RWD >>...
Open factory section →2020-2025
- →Never touch halogen bulb glass with bare hands — oils cause hot spots and early failure
2014-2019
- →Never touch halogen bulb glass with bare hands — oils cause hot spots and early failure
2008-2013
- →Never touch halogen bulb glass with bare hands — oils cause hot spots and early failure
2002-2007
- →Never touch halogen bulb glass with bare hands — oils cause hot spots and early failure
1996-2001
- →Never touch halogen bulb glass with bare hands — oils cause hot spots and early failure
1990-1995
- →Never touch halogen bulb glass with bare hands — oils cause hot spots and early failure
1984-1989
- →Never touch halogen bulb glass with bare hands — oils cause hot spots and early failure
1982-1983
- →Never touch halogen bulb glass with bare hands — oils cause hot spots and early failure
Parts and supplies
These links search for related products. Check your year, engine, specification, and fitment with the seller before ordering.
Chevrolet Blazer Headlight Bulbs
Confirm the specification and fitment for your exact vehicle before ordering.
We earn a small commission if you buy through these links — at zero extra cost to you. These are search results, not verified vehicle-specific recommendations.
Headlight Bulbs — Manual's Parts List
The right bulbs, handled clean.
- 1Headlight BulbsShop →
Varies by year — check existin — low beam and high beam if needed
- 2Nitrile GlovesShop →
Skin oils create hot spots on halogen glass
- 3Dielectric GreaseShop →
On the connector — prevents corrosion and flickering
Get everything at once
Search results vary; confirm each item and its fitment before buying.
Links go to Amazon via our affiliate store (aiautorepair-20). We earn a small commission at no extra cost to you — it keeps the site running and the data free.
One-Trip Shopping List
Recommended supplies and tools for this job, grouped so you can buy everything before the repair starts.
LED Upgrade Bulbs
Brighter, whiter light for better nighttime visibility.
Replacement Halogens
Standard OEM-spec bulbs for reliable replacement.
Dielectric Grease
Protects electrical connectors from moisture.
Latex-Free Gloves
Avoid fingerprints on the bulb and keep glass clean.
Project Essentials
Basic tool sets, gloves, and cleaning supplies for your Chevrolet Blazer so the job is ready when the parts arrive.
Frequently Asked Questions
- What headlight bulb does a Chevrolet Blazer use?
- Bulb sizes vary by year and trim. Check your owner's manual or remove the existing bulb to verify the part number.
- What headlight bulb size does a Chevrolet Blazer use?
- The Chevrolet Blazer headlight bulb size varies by year and trim. Check your owner's manual or existing bulb for the exact part number.
- Low beam vs high beam bulb for Chevrolet Blazer?
- Many vehicles use separate bulbs for low and high beams, while others use a single dual-filament bulb. Check the generation breakdown above for the exact bulb type assigned to each function.
Find your service manual
Select your vehicle and check the available manual sections for your exact configuration.
Author & Review
Published by AllOEMManuals, founded by Lyndon Bedford, an automotive technician with 20 years of experience. He owned and operated a mechanic shop in Hurst, Texas from 2014 to 2022 and continues hands-on repair work.
Content may combine manual references, general repair templates, and AI-assisted drafting. Confirm the source, vehicle configuration, and applicability before working. Report corrections through our contact page.
Last updated: 2026-11-07