Caravan Water Tank Filler Adapter – Fits Both Screw-On & 3-Tab (Twist-In) Caps

**How to Choose:**
Select either **AL-KO (3-tab)** or **Threaded (screw-on)** based on your vehicle’s filler neck—see photos or your manual for guidance.

Features

• ✅ Exact Fit – Designed for 78mm filler necks with 3 locking pins

• ✅ Holman Brass Hose Fitting – strong, rust-resistant, and long-lasting

• ✅ Double O-Rings – secure, watertight seal to prevent leaks

• ✅ Integrated Breather Hole – eliminates pressure build-up while filling

• ✅ UV Stable Material – durable in outdoor conditions, perfect for caravans

• ✅ Australian Made – designed and produced locally

Specifications

• Fitment: 3-pin filler neck, 78mm outer diameter

• Screw on alko / hume type.

• Material: UV-stable 3D-printed body + Holman brass fitting

• Seal: Double O-rings (included)

• Breather: Yes, integrated hole to prevent tank pressurisation

• Also be used as a hose joiner

What’s Included

• 1x Caravan Water Tank Filler Adapter (UV-stable, with breather hole)

• 1x Holman brass fitting (pre-installed)

Important Notes

• Please confirm your filler cap size before ordering (must be 78mm, 3 locking pins).

• 3D-printed items may have minor surface variations.

• Colours may vary slightly from images.