FRESHWATER FITTINGS KIT INSTALL INSTRUCTION GREY WATER FITTINGS KIT INSTALL INSTRUCTION
Curious Campervans Sprinter Wheel Well Water Tank (27 Gallon)
Maximize storage space in your van build with the Curious Campervans Sprinter Wheel Well Water Tank. Designed to utilize the often-unused space around the wheel well, this freshwater tank increases onboard water capacity without sacrificing valuable interior room.
Built from food-grade, BPA-free polyethylene and engineered specifically for Mercedes Sprinter vans, this tank also helps reduce road noise by adding sound insulation around the wheel well area.
With a capacity of 26.8 US gallons (101.4 litres), it provides a practical freshwater solution for extended off-grid adventures.
Looking for additional capacity? Check out the 29 Gallon Wheel Well Water Tank.
Need a grey water solution? Pair this tank with the 17 Gallon Sprinter Undermount Tank for a complete water management setup.
Features
- Flexible Placement – Available for installation on either the passenger or driver side.
- Improved Weight Distribution – Adds weight over the rear axle to help improve traction.
- Fresh Water System Ready – Compatible with the Fresh Water Fittings Kit to simplify installation and reduce additional plumbing purchases.
Key Features & Benefits
- Space Saving – Efficiently uses the wheel well area to preserve interior storage space.
- Build-Friendly Shape – Contoured for the wheel well with squared outer surfaces for easier integration into custom builds.
- Flexible Layout Options – Install on either side of the van or use dual tanks for increased capacity.
- Weight Distribution – Places additional load over the rear axle for improved traction and stability.
- Sound Reduction – Helps reduce road noise around the wheel well area.
- Food Grade Construction – CSA-approved and BPA-free for safe freshwater use.
- Fresh Water Fittings Kit Available – Optional fittings kit available to simplify installation.
- Optional Strapping Kit – Heavy-duty weather-resistant aluminum strapping available separately.
- Water Level Monitoring Compatible – Designed for use with the KUS S5U Water Level Sender.
- Expandable System – Pairs well with the 17 Gallon Sprinter Undermount Tank.
Specifications
Dimensions & Capacity
- Dimensions (L × W × H): 44.5" × 13" × 19"
- Capacity: 26.8 US Gallons / 101.4 Litres
Construction
- Linear low-density polyethylene
- Food-grade CSA approved
- BPA-free for freshwater use
Ports
- 1 × 1½" drill-out membrane port (top)
- 2 × 1¼" ports (top)
- 1 × 1¼" port (rear)
- 1 × ¾" port (rear)
- 2 × ½" ports (rear)
- 1 × ½" port (front)
All ports are female NPT threaded.
Fitment Notes
- Passenger-side tank sits approximately 9" behind the wheel well.
- Driver-side tank sits approximately 9" behind the wheel well.
- Fits with or without installed flooring.
Compatibility
- Mercedes Sprinter vans — all wheelbases
- Can also be used as an interior freshwater tank for other van platforms
- Available in passenger-side or driver-side configuration
| Side | Driver or Passenger |
| Freshwater Fittings Kit | None or With |
| Strapping Kit | Without or With |



