19 Gallon Slim Dually Wheel Well Water Tank

A Space-Saving Water Solution for Sprinter & Transit Dually Vans

The 19 Gallon Slim Wheel Well Water Tank is engineered specifically for vans that need maximum interior width with zero compromise. Unlike larger wheel well tanks, this slim-profile design preserves the full space between the wheel wells—perfect for builders who need that valuable width for beds, gear, or cabinetry.

Ideal for Sprinter 2500/3500 dually vans and Transit 2500/3500 dually platforms, this tank fits cleanly over the wheel well while keeping your layout open and efficient.

Fitment

Designed For:

• Mercedes Sprinter 2500 & 3500 Dually

• Ford Transit 250 & 350 Dually

• Also fits Sprinter T1N, Transit SRW, and various other makes/models

• Works on driver or passenger side, either in front of or behind the wheel well

Additional Fit Notes

• Transit: Wheel wells are slightly smaller, giving extra room for insulation

• RAM ProMaster: Must be elevated 3.5" to clear the larger wheel wells

Key Features

Slim, Layout-Friendly Design

Built to avoid taking up any width between the wheel wells—keeping the full cargo/passenger area unobstructed.

Optimized Wheel Well Fit

Purpose-shaped to sit tightly around the wheel arch, turning otherwise unused space into a 19-gallon water reservoir.

Food-Grade & Certified

• BPA-free, food-grade plastic

• IAPMO TS-4 tested & certified

• Suitable for fresh or grey water systems

Multiple Plumbing Options

Includes numerous port locations for flexible plumbing configurations:

• (2) 1.5" NPT ports + (2) 1/2" NPT ports on the larger end

• (1) 1.5" NPT top port (ideal for fill or level sensor)

• (1) 1.5" NPT port + (1) 1/2" NPT port on the wheel-well side

• Tank must be vented (not designed for pressurized use)

Includes Support Plate & Hardware

A support plate and required mounting hardware come included for a secure installation.

Dimensions

• Capacity: 19 gallons

• Length: 46"

• Height: 20"

• Width: 10"

Why Choose This Tank?

This slim dually wheel well tank is the perfect solution when you need:

✔ Full-width interior space for beds, bikes, or cabinetry
✔ A compact but high-capacity water source
✔ A tank that fits Sprinter & Transit dually configurations
✔ Clean integration without compromising layout design

It’s one of the smartest and most space-efficient choices for professional van builders and DIY upfitters alike.