2018 Honda Pilot — Bulb Sizes (Headlight, Tail, Fog)

Quick reference

Notes:

• The above sizes reflect the most common factory configurations for the 2018 Pilot (3rd generation). Touring/Elite trims use sealed LED headlamp assemblies for low/high beams and DRL—no replaceable bulb. Lower trims (LX/EX/EX-L) use serviceable halogen bulbs as listed.
• Minor bulb supplier differences exist (e.g., 7443A vs 7444NA up front). Verify socket fit before purchase.

LED vs halogen upgrade considerations

• Headlights (H11/9005 on LX/EX/EX-L): Quality LED retrofit kits can improve output, but beam pattern and glare depend on LED chip placement. Choose H11 LEDs designed for projector housings; ensure there’s room under the dust cap and avoid wiring pinch points. For 9005, pick a model that supports reduced‑voltage DRL operation; some LEDs will flicker or not illuminate in DRL mode.
• Touring/Elite LED assemblies: Low/high beams are integrated. Upgrading means replacing the entire headlamp assembly—costly but plug‑and‑play OEM. There is no bulb you can swap inside.
• Fog lights (H11): Straightforward LED upgrade; aim for 4000–6000K with a focused cutoff to minimize glare.
• Turn signals (7443/7440): LED swaps often cause hyperflash on the Pilot because the Body Control Module monitors circuit load. Use LED bulbs with built‑in resistors or add 6‑ohm load resistors per corner. There is no separate flasher relay to replace.
• Interior and markers (168/194, festoon): Generally drop‑in. If you notice a faint glow with ignition off, choose CANBUS/anti‑ghosting LEDs.
• Color temperature and legality: Front facing white LEDs should be 6000K or lower; all turn signals must remain amber, rear markers red. Verify local regulations.

How to replace each bulb

• Low beam (H11, halogen trims): Turn wheel inboard, remove inner fender access panel. Rotate bulb counterclockwise to remove; avoid touching the glass. Re‑seat O‑ring carefully when installing.
• High beam/DRL (9005, halogen trims): Access from behind the headlamp in the engine bay. Twist out counterclockwise; confirm connector is fully seated to prevent DRL flicker.
• Fog light (H11): From below or through the wheel liner. Three Phillips screws retain the fog bezel on some trims; otherwise twist the bulb from the rear housing.
• Front turn and side marker (7443A/168): Access through the wheel liner. The turn socket is larger (7443); the small wedge next to it is the 168 marker.
• Low/high beam (Touring/Elite LED): Entire assembly replacement only. Disconnect the harness, remove upper bolts and bumper cover clips to free the lamp.
• Brake/tail (7443): Open tailgate; remove the two Phillips/10mm screws on the side lamp, then pull the housing straight back. Rotate the dual‑filament socket to service the 7443.
• Rear turn (7440A): Same tail lamp removal; single‑filament amber socket.
• Reverse (921): Reverse bulbs are in the liftgate garnish. Open the hatch and remove the interior trim to access the 921 sockets.
• Rear side marker (168): In the outer tail lamp; serviced with the lamp removed.
• License plate (168): From outside, release the small lens tabs or access the sockets from inside the liftgate trim.
• Map lights (168): Pry the console lens carefully with a trim tool; pull the wedge bulb straight out.
• Dome (31mm festoon): Gently pry the lens, release the festoon clips, and seat the new lamp snugly.
• Cargo/3rd row (168): Pry lens, swap wedge bulb. Test before snapping the lens back on.

Tip: Always disconnect the battery when working near airbag wiring in pillars or when removing large interior trim pieces. Test each bulb before reassembling.

Common lighting issues for this generation

• DRL/high beam bulb life: On halogen trims, 9005 bulbs run at reduced voltage for DRL and can wear out early. Use long‑life 9005 or carry a spare.
• Hyperflash after LED turn upgrades: Expected without resistors or CANBUS LEDs. Mount resistors to metal away from plastic—resistors get hot.
• Moisture in headlamp or fog housings: Check rear caps and seals; replace missing caps and add a small desiccant pack if minor condensation persists.
• Melted 7443 sockets: Caused by over‑wattage bulbs or poor contact. Replace damaged sockets and avoid higher‑wattage incandescents.
• Flicker with cheap LEDs: Choose name‑brand LEDs with proper drivers; verify DRL compatibility on 9005.
• License plate harness at liftgate: Repeated flexing can break wires; repair with solder/heat‑shrink.

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