40L Underslung Fresh Water Tank & Back Fill Kit 750mm(L) x 370mm(W) x 160mm(H)

This 40 litre fresh water tank & back fill kit features a genuine Wydale water tank and has been designed for campervans, motorhomes, caravans and off-grid vehicle conversions. The compact low-profile design helps maximise valuable internal storage space while providing a reliable onboard fresh water supply.

Manufactured in the UK from durable food-grade polyethylene, Wydale tanks are well known for their strength, reliability and long service life. The hygienic, algae-resistant construction makes them ideal for fresh water use in leisure vehicles.

This complete back fill kit includes the essential fittings and components required for installation, making it suitable for both new conversions and replacement water systems.

What’s Included-

1 × Genuine Wydale 40L Universal Water Tank
(L: 750mm, W: 370mm, H: 160mm)

1 × Universal Tank Mounting / Strap Kit & Fixings

1 × 90 Degree Tank Connector
(1/2" BSP Male to 12mm Barb)

1 × Clear Braided PVC Pipe
(12.5mm × 1.7mm)

1 × 12mm Female Swivel Tee to 1/2" BSPP Male

1 × 2m John Guest 12mm Blue Pipe

1 × 8-16mm Stainless Steel Hose Clip

1 × Fresh Water Sill Mount Filler

⚠️ Important Information

Tank may contain traces of water on arrival—this is normal due to leak testing.

Please ensure the tank is fully cleaned before use.

Suitable for fresh water use only.

📏 Specifications

Capacity: 40 litres

Dimensions: 750mm (L) × 370mm (W) × 160mm (H)

Material: Food-grade polyethylene

Tank Colour: Black

Please check available installation space and dimensions before purchase.

Professional installation is recommended.