How to Find Your LED Bulb Size Before Ordering
Quick Answer
The safest way to find your LED bulb size is to confirm the vehicle year, make, model, trim, lighting position, and original bulb marking before ordering. A fitment lookup is helpful, but the original bulb, owner's manual, and housing photos can prevent mistakes when vehicles have different lighting packages.
Best sources for bulb-size confirmation
Bulb-size charts are useful starting points, but they should not be the only check. The same model can use different bulbs by year, trim, market, or headlight package.
If the vehicle has aftermarket headlights, a replacement bumper, or previous lighting work, confirm the installed hardware before buying.
| Source | Why it helps | What to watch |
|---|---|---|
| Original bulb marking | Shows what is currently installed | May be wrong if a previous owner installed the wrong bulb |
| Owner's manual | Confirms factory lighting position | May not cover aftermarket housings |
| Vehicle fitment page | Fast starting point by make and model | Still confirm trim, year, and position |
| Housing photo | Helps support verify socket and clearance | Photo must show the rear of the bulb and connector |
Bulb-size checklist before checkout
- Confirm the exact lighting position: low beam, high beam, fog, DRL, or auxiliary light.
- Check rear clearance for LED fans, heat sinks, drivers, and dust caps.
- Look for CAN bus warnings, flicker, or polarity requirements after test fitting.
- Confirm whether the product is a bulb replacement or a full lighting assembly.
- Contact support with photos if the original bulb or housing is uncertain.
Aozoom fitment content is a shopping aid. Final compatibility should be confirmed against the actual vehicle and installed lighting hardware.
Frequently Asked Questions
Can I search by vehicle instead of bulb size?
Yes. Start with Shop by Vehicle when you know the year, make, and model. Still confirm trim, lighting position, and original bulb before ordering.
Why do different websites show different bulb sizes?
Vehicle lighting can vary by trim, package, region, and aftermarket modifications. That is why the original bulb and housing should be checked when possible.
What if I cannot remove the bulb before ordering?
Use the owner's manual and vehicle fitment page first, then contact support with vehicle details and photos of the headlight or fog light housing.