If you're converting a VW Crafter into a campervan, one of the smartest upgrades you can make is fitting an underslung fresh water tank. Mounted beneath the vehicle's chassis, these tanks keep your interior space free, lower your centre of gravity, and give you a clean, professional finish — all without sacrificing capacity.

Why Go Underslung?

Unlike internal tanks that eat into your living space, underslung tanks sit neatly below the van floor. For a Crafter build, this means you can maximise your interior layout without compromising on water storage. They're also better insulated from temperature swings inside the van, and easier to fill from outside.

What Size Do You Need?

For a VW Crafter, the most popular options are in the 40–70 litre range, striking the right balance between capacity and ground clearance. If you're planning longer off-grid trips, going larger makes sense — just be mindful of the added weight when full (1 litre = 1 kg).

Our VW Crafter Underslung Water Tanks

Our water tanks are specifically designed to fit the VW Crafter chassis without any cutting or major modification. Key features include:

• Custom-fit design — engineered for the Crafter's frame rails for a secure, rattle-free mount
• Food-grade polyethylene — safe for drinking water storage
• Integrated fittings — inlet, outlet, and breather ports pre-fitted for a clean install
• Frost-resistant construction — built to handle Irish and European winters

Installation Tips

Fitting is straightforward with basic tools. The tank brackets bolt directly to the chassis, and we recommend using self-amalgamating tape on all connections for a watertight seal. Pair it with a 12V water pump and a filter inline for a complete system.

What to Pair It With

• 12V submersible or inline pump
• Inline water filter
• 15mm push-fit fittings for easy plumbing
• Tank level sender (optional but handy)

Ready to Order?

Browse our full range of water tanks and accessories — in stock and ready to ship. Whether you're mid-build or planning your conversion, get in touch and we'll make sure you get the right fit.