Dryalite BMW X5 F15 Headlight Moisture Fix Kit (2013–2018) –(Pair)
Dryalite absorbs humidity from the air inside your headlight. Choose your vehicle to find the right kit.
Kit: £50.00 - Available.
Fitment and specification
Dryalite Headlight Moisture-Fix Kit (Pair)
BMW X5 F15 (2013–2018)
- ✓ Targets condensation (humidity cycling inside the lamp)
- ✓ Fast DIY install, typically under 2 minutes per side
- ✓ Helps protect expensive headlights
Compatibility (PLEASE READ)
This listing is ONLY for vehicles that use the large rear covering cap / dust cap:
OEM part it replaces: 63117379845 (often marked on the cap as 7379845)
Does NOT fit Adaptive LED headlights that use OEM cap 63117379846 (often marked 7379846).
If the number moulded on your original cap is 305 239 308, this is not the correct listing, please buy from my other BMW X5 F15 listing for cap 305 239 308.
How to double-check before ordering: remove your existing cap and look for the moulded number on it (for example 7379845, 7379846 or 305 239 308). If yours is 7379846 / 63117379846 or 305 239 308, please don’t buy this version.
What’s Included
- 2 x Dryalite Moisture-Fix Cap (left + right)
- 2 x 50g silica gel desiccant packs
Seal note: Re-use the foam gasket from your original cap (no new gasket supplied).
How it Works
Dryalite adds serviceable desiccant to help reduce moisture inside the headlight and cut down condensation. If humidity returns over time, the desiccant can be reactivated and reused.
Re-activating the Desiccant
Check if the silica gel beads have turned dark green before reactivating (green = wet, orange = dry). Microwave at 700W for 3–5 minutes, or oven-dry for 30–60 minutes at 100–120°C. Allow to cool before refitting.
30 day money back guarantee
If you’re unsure, message me a photo of your existing cap number and I’ll help you confirm fitment.
How does Dryalite reduce condensation?
Dryalite holds moisture-absorbing silica gel inside vehicle-specific headlight caps. It absorbs water vapour from the air inside the headlight, leaving less moisture available to condense on the lens.
Twist-off cap kits need no cutting or drilling. The sealed-cap F10 kit uses a different fitting method explained in its product details.
Recurring misting, not active leaks. If the headlight is cracked or has pools of water inside, Dryalite will not fix it. Repair the fault first.
Green means recharge.
Remove the silica packets, dry them until the beads turn orange, let them cool, then put them back.
30-day full-refund guarantee
If it does not help, return your kit within 30 days for a full refund.
Questions before ordering.
Will Dryalite fix every condensation problem?
No. Dryalite absorbs humidity from the air inside the headlight. It cannot repair a cracked headlight or deal with pools of water inside it.
Is the silica gel loose inside the headlight?
No. The silica packets sit securely inside the Dryalite cap, away from the bulb and reflector.
How quickly should I see a difference?
Some buyers see an improvement within hours. Allow a few days, as every headlight starts with a different amount of moisture.
How do I choose the right kit?
Choose your model above and compare the product photos with your headlight cap. Contact us if you want help checking.
Can the silica gel be reused?
Yes. Orange means ready and green means saturated. When the beads turn green, remove and dry the silica packets, let them cool fully, then refit them. Never heat the caps or seals.
Do I need to permanently modify my headlights?
Twist-off cap kits require no permanent modification. The sealed-cap F10 kit uses a different fitting method, so check its product details before ordering.
How often will the silica need recharging?
It depends on the weather and your headlight. Check the indicator beads and recharge only when they turn green.
What if Dryalite does not help?
Return the kit within 30 days for a full refund.