The quick answer: for most 2018 Ford F-150s with standard halogen headlights, use H11 for low beams and 9005 (HB3) for high beams. If your truck has optional HID or LED headlights, the bulb situation is different: HID uses dedicated HID bulbs with ballasts, and LED headlights typically use non-replaceable LED modules. Always verify the exact type in the owner's manual or by inspecting the headlight assembly.
This article outlines the typical bulb sizes by headlight type and explains how to identify which system your specific 2018 F-150 uses. It also covers replacement tips and safety considerations to help you avoid buying the wrong parts.
Halogen headlights: common sizes
Below are the standard sizes you’ll likely need if your 2018 F-150 uses stock halogen headlights. These are the sizes most drivers replace at auto parts stores or service centers.
- Low beams: H11
- High beams: 9005 (HB3)
- Fog lights: H11
Halogen headlights are the most common configuration on many 2018 F-150s, but some trims or aftermarket setups may differ. Always confirm by removing the original bulb and checking its markings if uncertain.
Alternative headlight configurations (HID and LED)
If your 2018 F-150 has HID or LED headlights, the replacement approach changes. The following outlines the typical scenarios you may encounter.
- HID headlights (if equipped): HID bulbs and ballast are required. The exact bulb type is usually D2S or D3S, depending on the ballast configuration; verify using the ballast label or owner’s manual.
- LED headlights (if equipped): Most factory LEDs use non-replaceable LED modules rather than traditional bulbs; replacing a failed component often involves the entire module or headlight assembly.
Because Ford offered lighting options that vary by trim and market, it’s important to confirm the exact configuration before purchasing replacements. Check the owner’s manual, the headlight housing, or consult a dealer for the precise part numbers.
How to identify which system your 2018 F-150 has
To determine your headlight type, you can: review the owner’s manual, inspect the headlight assembly for a ballast (indicative of HID) or an integrated LED module, and look for markings on the bulb base if you’re replacing a halogen bulb. If in doubt, provide your trim level and lighting package to a dealer or parts specialist to confirm the correct bulb type.
Practical tips for replacement
Before handling any bulbs, ensure the engine and headlights are completely off and the bulbs have cooled. Wear gloves or use a clean cloth to avoid transferring oils to the bulb glass, which can shorten bulb life. When installing, seat the bulb firmly and, if applicable, reconnect the ballast or LED module securely. After replacement, test the headlights to verify proper operation.
Summary
For the 2018 Ford F-150, halogen headlights generally use H11 for low beams and 9005 for high beams (fog lights often use H11). If your truck has HID headlights, expect D2S or D3S-type bulbs with a ballast, and LED-equipped models use non-replaceable LED modules rather than traditional bulbs. Always verify the exact type by consulting the owner's manual, inspecting the headlight hardware, or contacting a dealer to avoid buying the wrong parts.