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Forward Lighting
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Exterior Lighting
- Back Up Light Bulb » 921
- Brake Light Bulb » 7443
- Center High Mount Stop Light Bulb » 921
- License Plate Light Bulb » 2825
- Parking Light Bulb » 7444NA
- Side Marker Light Bulb Front » 2825
- Side Marker Light Bulb Rear » 7443
- Tail Light Bulb » 7443
- Turn Signal Light Bulb Front » 7444NA
- Turn Signal Light Bulb Rear » 7443
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Interior Lighting
2018 Chevrolet Colorado Headlight Bulb Size
As the second-generation Colorado's most capable year yet — headlined by the ZR2 with its DSSV dampers, front and rear lockers, and Baja 1000 pedigree — the 2018 Chevrolet Colorado earned a reputation for going places most midsize trucks cannot. The 2018 Chevrolet Colorado headlight bulb size is H11 for the low beam and 9005 for the high beam, with H11 fog light bulbs on equipped trims. Those bulb sizes are shared across every 2018 Colorado trim, from the base Work Truck to the trail-hungry ZR2 and the diesel-equipped models running the 2.8L Duramax.
Whether you chose the Colorado as a Tacoma alternative or specifically for ZR2 off-road capability, upgrading to 2018 Chevrolet Colorado LED headlights delivers a dramatic improvement over the factory halogen output. Dim yellowish beams are a liability when you are threading through desert washes at dusk or towing a trailer down an unlit two-lane highway. Brighter, whiter light with more forward reach changes the entire driving experience after dark.
Best LED Headlight Upgrade for the 2018 Colorado
The 2018 Colorado's halogen projector housings respond extremely well to LED conversion bulbs. An H11 LED kit drops into the low beam position with a quarter-turn, and the compact driver unit fits behind the housing without any modification. From the moment you switch on the headlights, you get full 6000K white output — no warm-up delay, no flicker. Plan about 15 minutes per side for the low beams.
For ZR2 and off-road owners, upgrading both the low beam (H11) and high beam (9005) positions delivers the layered lighting coverage that rough terrain demands. HID conversion kits are another strong option when maximum beam throw is the priority. Each HID bulb needs a slim ballast, adding about 10 minutes to the installation, but the raw lumen output is difficult to beat on dark desert trails or backwoods logging roads.
Swapping the H11 fog light bulbs to LED or HID adds low-level fill light that cuts through dust, rain, and early-morning ground fog. Every HID Nation kit ships free and includes a lifetime warranty on all components.
Frequently Asked Questions
What headlight bulb size does a 2018 Chevrolet Colorado use?
The 2018 Chevrolet Colorado uses an H11 bulb for the low beam, a 9005 bulb for the high beam, and an H11 bulb for the fog lights. These sizes apply across all trims including WT, LT, Z71, ZR2, and diesel models. The bulb fitment is the same regardless of engine choice — 2.5L four-cylinder, 3.6L V6, or 2.8L Duramax diesel.
Are LED headlights a good upgrade for the 2018 Colorado ZR2?
The ZR2 is built for serious off-road duty — DSSV dampers, locking differentials, rock sliders — and LED headlights complement that capability. LED bulbs resist vibration far better than halogen filament bulbs, provide instant-on brightness when you need to spot trail obstacles, and draw less power from the electrical system. For ZR2 owners who run auxiliary lights alongside their headlights, the lower current draw of LEDs is a practical advantage.
Does the 2018 Colorado diesel have different headlight bulbs?
No. The 2018 Colorado with the 2.8L Duramax diesel uses the same H11 low beam, 9005 high beam, and H11 fog light bulbs as the gasoline-powered models. Engine choice does not affect headlight bulb fitment on the Colorado. The same LED or HID conversion kit works on every 2018 Colorado regardless of drivetrain.
How do I install LED headlights on a 2018 Chevrolet Colorado?
Open the hood and locate the headlight access area behind each housing. Twist the H11 low beam bulb counterclockwise to release it, then disconnect the wiring connector. Insert the new LED bulb, twist clockwise to lock, and reconnect the harness. Mount the LED driver in a secure spot behind the housing. The passenger side is a tighter fit than the driver side, but most owners complete both low beams in about 30 minutes without removing any additional components.
Should I upgrade the fog lights on my 2018 Colorado along with the headlights?
Upgrading the fog lights is highly recommended, especially if you already plan to install LED low beams. The 2018 Colorado uses H11 bulbs in both the low beam and fog light positions, so the same H11 LED kit works in both locations. Matching the color temperature across headlights and fog lights eliminates the yellow-and-white mismatch that looks inconsistent and reduces overall lighting effectiveness.