Dryalite Headlight Moisture-Fix Kit | BMW 4 Series F32/F33/F36 (2013-20) (pair)
£50.00
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Dryalite Headlight Moisture-Fix Kit | BMW 4 Series F32/F33/F36 (2013-20) (pair)
£50.00
Dryalite Headlight Moisture-Fix Kit (Pair)
Fits: BMW 4 Series F32 / F33 / F36 with removable twist-off dust caps
✓ Helps reduce internal headlight condensation over time
✓ Quick DIY install (typically under 2 minutes)
✓ Reusable desiccant if moisture returns
✓ Helps protect expensive headlights (often £1,000+ each to replace)
Compatibility
This kit is for BMW 4 Series F32 / F33 / F36 headlights that use a hand-removable twist-off rear dust cap.
Dust cap part number (moulded on the cap):
305 239 308
(May also appear without spaces as 1305239308 depending on how it’s written.)
Best way to confirm: remove your existing cap and check the number + compare the shape to the fitment photo.
If you’re unsure, message me a photo of your cap and I’ll help confirm before you buy.
Not compatible
This kit will not fit if:
- Your headlight has non-removable / sealed caps (no twist-off access caps)
- Your cap has a different part number
What’s Included
- 2 × Dryalite Moisture-Fix Caps (left + right)
- 2 × 50g silica gel desiccant packs
Installation (no tools)
- Open the bonnet and locate the top access dust cap on the headlight.
- Twist the original cap off by hand.
- Fit the Dryalite cap in its place.
- the desiccant will absorb moisture over time.
Notes (Please Read)
- This kit is intended for condensation / humidity issues. If there is standing water, a cracked lens, or damaged seals, the underlying leak should be repaired first.
- Not all BMW 4 Series headlights use the same cap fitment is based on the dust cap part number and a visual match, not model year alone.
Re-activating the Desiccant
Microwave: 3–5 minutes at 700W.
Oven: 30–60 minutes at 100–120°C.
30-day money-back guarantee