Caravan Tank Filler Adapter for Screw & Twist Caps
Fill your caravan water tank directly from a garden hose. Designed for 78mm filler necks with quality Holman brass fittings and double O-ring seals.
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Simple Tank Filling Solution
Tired of juggling buckets or jerry cans to fill your caravan water tank? This caravan tank filler adapter lets you connect a standard garden hose directly to your tank's filler neck for fast, easy filling.
- Exact Fit – Designed for 78mm filler necks with 2 or 3 locking pins
- Holman Brass 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
? How to choose: Select either AL-KO (3-tab), 2-tab, or Threaded (screw-on) based on your vehicle's filler neck – see photos or your manual for guidance.
Key Features
Exact Fit Design
Precision-designed for 78mm filler necks with 2-pin, 3-pin, or screw-on fitment options.
Holman Brass Fitting
Quality Australian brand brass fitting – strong, rust-resistant, and built to last.
Double O-Ring Seal
Two O-rings ensure a secure, watertight seal that prevents leaks during filling.
Integrated Breather
Built-in breather hole eliminates pressure build-up while filling your tank.
UV Stable Material
Durable 3D-printed body won't degrade in harsh Australian sun and outdoor conditions.
Australian Made
Designed and produced locally in Australia for Australian caravans and conditions.
Multiple Fitment Options Available
3-tab, 2-tab, and AL-KO/Hume screw-on styles in black or white
Choose Your Fitment Style
Select the adapter that matches your caravan's filler neck:
Specifications
| Fitment | 2-pin, 3-pin, or screw-on |
| Filler Neck Size | 78mm outer diameter |
| Body Material | UV-stable 3D-printed |
| Fitting | Holman brass (pre-installed) |
| Seal | Double O-rings (included) |
| Breather | Yes, integrated hole |
| Colours | Black or White |
| Made In | Australia |
What's Included
Also Works As
This adapter can also be used as a hose joiner when you need to connect two hoses together – a handy bonus feature for your camping kit.
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Important Notes
- Please confirm your filler cap size before ordering (must be 78mm)
- Check whether you have 2-tab, 3-tab, or screw-on filler neck
- 3D-printed items may have minor surface variations
- Colours may vary slightly from images
? Check the photos in the product gallery or refer to your caravan manual to identify which style you need.
Get Your Caravan Tank Filler Adapter
Australian made with quality Holman brass fittings. Fill your caravan water tank the easy way – straight from any garden hose.
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