What is the low beam headlight bulb size for a 2018 Jeep Wrangler JK?

The 2018 Jeep Wrangler JK uses a H13 bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2018 Jeep Wrangler JK?

The high beam bulb size for the 2018 Jeep Wrangler JK is N/A.

Why are my 2018 Jeep Wrangler JK headlights dim?

Dim headlights on a 2018 Jeep Wrangler JK can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a H13 LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2018 Jeep Wrangler JK fog light?

The 2018 Jeep Wrangler JK typically does not come with factory fog lights in all trim levels. If your vehicle is equipped with them, check the manual as sizes can vary by trim.

Is the 2018 Jeep Wrangler JK single or dual beam?

The 2018 Jeep Wrangler JK uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2018 Jeep Wrangler JK?

Yes, the 2018 Jeep Wrangler JK comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a H13 LED conversion kit for the low beams.

How do I change the headlight on a 2018 Jeep Wrangler JK?

Turn off the vehicle and open the hood. Locate the headlight assembly from behind, remove the dust cover or retaining clip, disconnect the wiring harness, twist the old H13 bulb counter-clockwise to remove it, then insert the new bulb and reassemble. Note: Jeep vehicles use a CANbus system, so LED replacements may need an anti-flicker decoder. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 2018 Jeep Wrangler JK?

LED bulbs used off-road or in auxiliary lights are legal everywhere. For on-road headlight use, legality varies by state. Many states allow LED retrofits as long as the beam pattern meets DOT standards. For the best legal compliance, choose a DOT-approved H13 LED kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

How much does it cost to replace 2018 Jeep Wrangler JK headlights?

A pair of halogen H13 bulbs costs $15 to $40, while LED conversion kits run $25 to $60 per pair. If you have a shop do the work, expect an additional $20 to $50 in labor per bulb. Replacing them yourself at home saves the labor cost and usually takes under 30 minutes.

What is the difference between halogen and LED for a 2018 Jeep Wrangler JK?

Halogen bulbs produce a warm yellow light (around 3200K), last 500 to 1000 hours, and draw more power. LED bulbs emit a brighter white light (5000-6000K), last 25,000+ hours, and use less energy. LED upgrades for the H13 position are available as direct plug-and-play replacements. Since the Jeep uses CANbus monitoring, choose a CANbus-compatible LED kit to avoid dashboard errors.

The 2018 Jeep Wrangler JK has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 2018 Jeep Wrangler JK

What Size Bulbs Does a 2018 Jeep Wrangler JK Use?

Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.

Installation Difficulty

Moderate (Dust covers often present)

Est. Replacement Cost

$15 - $40 (Halogen) / $30+ (LED)

What Lighting System Does the 2018 Jeep Wrangler JK Have?

The 2018 Jeep Wrangler JK utilizes a refined lighting configuration featuring 10 distinct bulb positions. It features a comprehensive lighting system powered by a dual-bulb halogen configuration using separate H13 low beam and high beam bulbs for precise light distribution. Note that Jeep vehicles typically feature a CANbus electrical monitor that checks for specific bulb resistance.

LED Flicker Warning

This vehicle is known to use a CANbus system. Installing standard LEDs may cause flickering.

Use a CANbus decoder.

Can You Put LED Bulbs in a 2018 Jeep Wrangler JK?

For a Jeep built for the road and trail, LED upgrades provide the high-contrast lighting needed for better obstacle detection. We recommend starting your upgrade with the H13 low beams, as they see the most use. Adding a matching LED kit later will complete the look and ensure consistent lighting performance. Because Jeep utilizes a CANbus system, standard LED bulbs may cause "bulb out" errors on your dashboard. Always opt for "Error-Free" or CANbus-ready kits which include the necessary resistors.

2018 Jeep Wrangler JK Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	H13	Buy H13 →
Turn Signal Front	3757NA	Buy 3757NA →
Side Marker	168	Buy 168 →
Turn Signal Rear	3157	Buy 3157 →
Tail Light	3157	Buy 3157 →
License Plate	194	Buy 194 →
Parking Light	3757NA	Buy 3757NA →
Reverse Light	3157	Buy 3157 →
Brake Light	3157	Buy 3157 →
Dome Light	912	Buy 912 →

How do the 2018 Jeep Wrangler JK's bulbs compare to other years?

This bulb configuration covers the 2018 model years.

Finding the best installation guide...

Other Wrangler JK Years

Other Vehicles That Use H13 Bulbs

2022 Ford E-350 Super Duty 2022 Ford F-250 Super Duty 2022 Ford F-350 Super Duty 2022 Ford F-450 Super Duty 2022 Ford F-550 Super Duty 2022 Ford F-600 Super Duty

H13 Comparisons

9008 vs H13