20 Gallon Wheel Well Water Tank (Right)

Smart Fit. Clean Layout. Built for Sprinter Van Water Storage.

The 20 Gallon Wheel Well Water Tank (SP-R-20) is engineered to maximize the unused space around the wheel well, giving you efficient water storage without limiting interior layout options. Perfect for Sprinter builds and compatible with several other platforms, this tank provides a balanced footprint with flexible installation orientations.

Fitment

Designed For:

• Mercedes Sprinter 2500 (all lengths)

• Sprinter T1N

• Ford Transit Single Rear Wheel Vans (extra insulation room due to slightly smaller wheel wells)

PROMASTER Fitment

• Promaster wheel wells are larger; tank must be elevated 3.5" for proper fit.

Placement Options

• Passenger Side: Tank sits mostly behind the wheel well with a flush front edge

• Driver Side: Tank sits mostly in front of the wheel well with a flush rear edge

Both orientations maintain clean fitment and maximize plumbing flexibility.

Key Features

Wheel-Well-Optimized Design

Stores up to 20 gallons while taking advantage of the dead space surrounding the wheel well—ideal for van conversions that need maximum interior layout freedom.

Durable, Safe Construction

• Made from BPA-free, food-grade polyethylene

• Designed for long-term mobile use

• Made in the USA

Flexible Plumbing Options

Rectangular End:

• (2) 1.5" NPT ports (need to be drilled out)

• *(2) 1/2" NPT ports

Open End:

• (1) 1/2" NPT port on the bottom (ideal for drain)

Top Port:

• (1) 1.5" NPT port (needs to be drilled out — fill or sensor option)

Vent Required

Tank is not pressurized — must be vented for safe operation.

Dimensions

• Capacity: 20 gallons

• Length: 44.5”

• Height: 16”

• Depth: 12.5”

Why Choose This Tank?

✔ Ideal 20-gallon capacity without consuming aisle or cabinet space
✔ Fits Sprinter and several other popular van platforms
✔ Multiple plumbing configurations for flexible layouts
✔ Clean fit on driver or passenger side
✔ Highly durable, USA-made construction

The 20 Gallon Right Wheel Well Tank is an efficient, compact solution for builders who want reliable water storage without compromising interior design.