Transit Custom - (2023 onwards) / VWT7 - (2025 onwards) Wheel Arch Water Tank 31L
Transit Custom - (2023 onwards) / VWT7 - (2025 onwards) Wheel Arch Water Tank 31L is backordered and will ship as soon as it is back in stock.
Care information
Care information
To help you get the most from your purchase:
- Follow the manufacturer's care and maintenance instructions.
- Store products clean and dry when not in use.
- Clean with warm water and a mild detergent unless otherwise stated.
- Avoid prolonged exposure to harsh weather when the product is not in use.
- Regular maintenance will help extend the life of your caravan and camping equipment.
If you have any questions about installation, compatibility or maintenance, our team is happy to help.
Delivery and Shipping
Delivery and Shipping
🚚 Delivery & Shipping
We aim to dispatch all in-stock orders within 1–2 working days. Orders placed before 3pm are usually dispatched the same working day, although this may take up to 48 hours during busy periods.
- Standard UK Delivery: 2–3 working days
- Next Day Delivery: Available on selected products
- Large, oversized or pallet items: May take 2–5 working days
- Tracking information will be provided once your order has been dispatched.
- All deliveries require a signature upon arrival.
Please note that oversized, overweight or hazardous items may incur additional delivery charges, which will be displayed at checkout.
If an item is temporarily out of stock, we'll notify you and dispatch it as soon as it becomes available.
Need delivery outside the UK or have a special delivery request? Contact our customer support team for a personalised shipping quote.
Returns & Warranty
Returns & Warranty
We offer a 30-day returns policy on unused items in their original packaging. If your item develops a fault, we'll work with the manufacturer to resolve it quickly. Please see our Returns Policy for full details.
Need Help?
Need Help?
Not sure if this product is compatible with your caravan, motorhome or awning? Contact our team before ordering and we'll happily check compatibility for you.
Why Buy From Trekka?
Why Buy From Trekka?
🇬🇧 UK Based Business
🚚 Fast UK Delivery
💬 Friendly Expert Support
⭐ Quality Brands You Can Trust
🔒 Secure Online Checkout
Transit Custom - (2023 onwards) / VWT7 - (2025 onwards) Wheel Arch ...
Transit Custom - (2023 onwards) / VWT7 - (2025 onwards) Wheel Arch Water Tank 31L is backordered and will ship as soon as it is back in stock.
⚠️ Please Note: To complete your installation you will also need:
- Transit Custom / VWT7 31L & 37L Wheel Arch Tank Bracket Kit — vehicle-specific mounting brackets
- Wheel Arch Water Tank Plumbing Kit (31L & 37L) — all BSP fittings, seals and PTFE tape
The 31L Wheel Arch Water Tank is a space-saving water storage solution specifically designed for the Ford Transit Custom (2023 onwards) and Volkswagen Transporter T7 (2025 onwards). Shaped to fit neatly over the vehicle wheel arch, it allows campervan builders to utilise otherwise wasted space while preserving valuable storage and living areas within the conversion.
Manufactured in the UK from durable, WRAS-approved polyethylene suitable for potable water, the tank can be installed on either the nearside or offside wheel arch. Its compact vertical design makes it ideal for campervans, day vans, and leisure vehicles where maximising available space is a priority.
Key Features
- 31-litre water storage capacity
- Designed for:
- Ford Transit Custom (2023 onwards)
- Volkswagen Transporter T7 (2025 onwards)
- Wheel arch-mounted design
- Suitable for fresh drinking water systems
- WRAS-approved polyethylene construction
- Fits nearside or offside wheel arch locations
- Space-saving vertical design
- Durable rotationally moulded construction
- Large inspection/access lid
- Multiple inlet and outlet connection points
- Suitable for campervan and motorhome conversions
- Manufactured in the United Kingdom
Technical Specifications
| Specification | Value |
|---|---|
| Manufacturer | Wydale Plastics |
| Capacity | 31 Litres |
| Material | WRAS Approved Polyethylene |
| Colour | Black |
| Length | 350 mm |
| Width | 155 mm |
| Height | 750 mm |
| Weight | 4.5 kg |
| Installation Position | Nearside or Offside Wheel Arch |
| Inlet / Outlet Connections | 4 × ½" BSP and 1 × 1¼" BSP |
| Application | Fresh Water Storage |
| Country of Origin | United Kingdom |
Specifications may vary slightly due to the rotational moulding manufacturing process.
Design Benefits
Space-Saving Installation
The tank is designed to utilise the unused area above the wheel arch, creating substantial onboard water storage without sacrificing cupboard space, garage storage, or living area within the van conversion.
Vehicle-Specific Fit
Developed specifically for the latest Transit Custom and VW T7 platforms, the tank follows the wheel arch profile and can be installed on either side of the vehicle for greater layout flexibility.
Potable Water Safe
Constructed from WRAS-approved polyethylene, the tank is suitable for drinking water applications when installed as part of a correctly maintained fresh water system.
Connection Points
The tank features:
- 4 × ½" BSP inlet/outlet positions
- 1 × 1¼" BSP connection
- Large inspection lid
- Undrilled ports supplied as standard for custom installation
This allows installers to configure fresh water outlets, fill connections, vent lines, pump feeds, and water level monitoring systems to suit their specific conversion requirements.
A dedicated Wheel Arch Water Tank Plumbing Kit and Bracket Fit Kit are available separately.
Installation Notes
- Fits both nearside and offside wheel arch positions.
- Designed primarily for Transit Custom and VW T7 conversions.
- Ports are supplied undrilled to allow maximum flexibility during installation.
Suitable Applications
- Campervan conversions
- Ford Transit Custom conversions
- Volkswagen Transporter T7 conversions
- Day vans
- Motorhomes
- Weekend campers
- Off-grid van builds
- Fresh water storage systems
- Mobile leisure vehicles
Why Choose This 31L Wheel Arch Tank?
The 31L Wheel Arch Water Tank offers an efficient way to add onboard water storage while preserving valuable interior space. Its vehicle-specific design, potable-water-safe construction, flexible plumbing configuration, and ability to fit either side of the vehicle make it an excellent choice for modern Transit Custom and VW T7 campervan conversions.
Payment & Security
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