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Forward Lighting
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Exterior Lighting
- Back Up Light Bulb » 921
- Brake Light Bulb » 3157
- Daytime Running Light Bulb (w/halogen capsule headlamps) » H11
- Parking Light Bulb (w/halogen capsule headlamps) » 7444NA
- Side Marker Light Bulb Front (w/halogen capsule headlamps) » 2825
- Stepwell Light Bulb » 906
- Turn Signal Light Bulb Front (w/halogen capsule headlamps) » 7444NA
- Turn Signal Light Bulb Rear » 7440A
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Interior Lighting
- Check Engine Light Bulb » 2721
- Courtesy Light Bulb » 2825
- Glove Box Light Bulb » 194
- High Beam Indicator Light Bulb » 2721
- Instrument Panel Light Bulb » 194
- Interior Door Light Bulb Compare To Original » 2825
- Interior Door Light Bulb Compare To Original » 906
- Parking Brake Indicator Light Bulb » 2721
- Trunk or Cargo Area Light » 214-2
- Turn Signal Indicator Light Bulb » 74
2018 Jeep Grand Cherokee Headlight Bulb Size
By 2018, the Grand Cherokee had fully cemented its reputation as the SUV that could handle a school-run morning and a trail-rated afternoon without breaking a sweat. Trackhawk production ramped up, the High Altitude package became one of the most popular configurations, and the Sterling Edition added exclusive styling touches. The 2018 Jeep Grand Cherokee headlight bulb size is 9012 (HIR2) for the low beams, 9005 for the high beams, and H11 for the fog lights. Laredo models use halogen headlights, while Limited, High Altitude, Overland, and Summit trims came with factory HID or LED lighting.
The 9012 is not a bulb you will find at every auto parts store, which is part of why so many 2018 Grand Cherokee owners search specifically for this size online. Switching to 2018 Jeep Grand Cherokee LED headlights replaces the warm-yellow halogen output with a sharp, white beam that dramatically improves nighttime confidence on highway on-ramps and winding back roads alike.
LED vs. HID Headlight Kits for the 2018 Grand Cherokee
LED conversion kits designed for the 9012 socket are the go-to upgrade for the 2018 Grand Cherokee. They produce full output the instant you turn the key, run cool enough to preserve the factory housing seals, and last tens of thousands of hours. The driver module is small enough to mount right behind the headlight without relocating any engine-bay components.
HID kits make sense for owners who demand the longest possible beam reach. Whether you are pulling a camper through unlit mountain passes or navigating rural county roads after dark, the xenon arc's concentrated throw gives you an extra margin of reaction time at speed. Budget about 40 minutes for both sides, including ballast mounting.
Every HID Nation kit ships free to your door and includes a lifetime warranty that covers bulbs, drivers, and ballasts for as long as you own the vehicle.
Frequently Asked Questions
What is the 2018 Jeep Grand Cherokee headlight bulb size?
The 2018 Jeep Grand Cherokee uses 9012 (HIR2) bulbs for the low beams, 9005 (HB3) bulbs for the high beams, and H11 bulbs for the fog lights. This applies to halogen-equipped trims like the Laredo. Higher trims such as Limited, High Altitude, Overland, Summit, and Trackhawk shipped with factory HID or LED headlight assemblies that use a different internal capsule.
What is the difference between a 9012 and an H11 headlight bulb?
The 9012 (HIR2) and H11 use the same two-pin connector and have a nearly identical physical envelope, but the base tabs are cut at different positions to prevent cross-installation. The 9012 also has a slightly different filament geometry optimized for its specific reflector design. You can file down the tabs on an H11 to make it fit a 9012 socket, but a purpose-built 9012 LED bulb is the correct solution for proper beam focus and secure seating.
Will installing LED headlights void my 2018 Grand Cherokee warranty?
Under the Magnuson-Moss Warranty Act, a dealer cannot void your vehicle warranty simply because you installed aftermarket LED headlight bulbs. They would need to demonstrate that the LED bulbs directly caused a specific failure. LED conversion kits from HID Nation draw similar or lower wattage than the factory halogen and do not alter the vehicle's electrical system.
Can I upgrade just the fog lights on my 2018 Grand Cherokee?
Yes. The 2018 Grand Cherokee fog lights use a standard H11 bulb, which is one of the most widely supported sizes for LED conversion. Access the fog light housing from below the front bumper fascia, twist the socket loose, pull the halogen out, and insert the LED replacement. The result is a whiter, more defined fog light beam that pairs well with upgraded low beams.
Do 2018 Grand Cherokee LED headlights cause any dashboard error codes?
The 2018 Grand Cherokee does not typically throw a bulb-out warning when LED headlights are installed, because the 9012 circuit does not use a sensitive canbus monitoring system. In uncommon cases where a slight flicker occurs at startup, an inline resistor or decoder resolves the issue. HID Nation can advise on whether your specific trim needs one.