eBay

Dryalite® Headlight Moisture-Fix Kit (Pair)

BMW 1 Series F20 / F21 (2011–2019) — TOP/UPPER engine-bay headlight cap

✓ Helps reduce condensation by drying the air inside the headlight
✓ Quick DIY fitment (typically under 2 minutes per side)
✓ Protects expensive headlights from recurring moisture build-up

IMPORTANT: FIT CHECK (10 seconds)

This listing is for the TOP/UPPER cap that is accessible from the engine bay.
✅ Fits ONLY if your existing top cap is marked: 159 333 00 .
❌ If your cap shows a different number (e.g. HELLA 19291300), please view my other listing.
Please check to the reference image in the listing: if you are unsure, message me a clear photo of your cap before ordering and I’ll confirm.

What’s Included

2 × Dryalite® moisture-fix caps (left + right)
2 × 50g silica gel desiccant packs

Seal: Re-use the original foam gasket/seal from your BMW cap (no new O-ring supplied).

How It Works

Dryalite replaces your top access cap and holds desiccant inside the headlight area to absorb humidity. If condensation returns over time, you can dry and re-use the desiccant.

Re-activating the Desiccant

Microwave: 3–5 minutes at 700W (use a microwave-safe dish; do not microwave any plastic packaging).
Oven: 30–60 minutes at 100–120°C.

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