Looking for a grey water tank to compliment your freshwater tank? Check out our 17 Gallon Transit Undermount Water Tank! Need something smaller? We also have a 10 Gallon Transit Undermount Water Tank. These undermount water tanks fit snugly under your Transit's undercarriage; the perfect solution for your off-grid water requirements. 

Key Features & Benefits:

• Space Saving - A unique way to make efficient use of that awkward wheel well area and shape.
• Perfectly Shaped - Not only do these tanks mold to the shape of your wheel well but the top and outside are also squared off to account for further building. Last we checked, it’s easier to build a square box than a round one.
• Build Options - These tanks are interchangeable between both wheel wells; you can fit this tank over whichever wheel well works best for your build. Need more water? Place one on either side of your van for mega-volume!
• Distributes Weight - Adds weight over your rear axle to help increase traction if you get in a sticky spot. No more slips and skids, not to mention unwanted wheel wear, thanks to the perfect weight distribution of these tanks.
• Sound Proofing - When it comes to road noise, these tanks step it up with added noise reduction around your wheel well.
• BPA-Free and Food Grade Approved - Feel safe knowing these tanks are food grade CSA approved! Wash the dishes, have a shower, fill the dog bowl, and stay hydrated, while exploring in your van!
• Compatible - Pairs well with our 17 Gallon Transit Undermount Water Tank.

Dimensions & Specifications:

Designed for the Ford Transit Dually, all wheelbases.

This tank is for a dually wheel well - Click HERE for the Transit Wheel Well Water Tank.
Tank can be placed on either the PASSENGER SIDE or DRIVER SIDE of the van.
Fits around the wheel well with or without flooring installed in the van.

Tanks are made from linear low-density polyethylene.
Food grade CSA approved and BPA free - safe for freshwater use!

32 US Gallons / 121.1 Litres

45” x 19" x 16.5” (Length x Width x Height)

2 x 1 ¼" drill-out membrane ports (on top at either end)
2 x 1 ¼" drill-out membrane ports (one on each end)
2 x ¾" ports (one on each end)
4 x ½” ports (two on each end)
2 x 1 ¼" drill-out membrane ports (on the side of the tank - you can ignore these!)

The larger 1 ¼" ports are "membrane ports", which require drill-out for use.
The membrane eliminates the need to plug the ports if you don't use them.

All ports are NPT female-threaded.

Fresh Water Fittings Kit Add-On:

• 1x 1 ¼" PVC 90
• 2x ¾" PVC 90
• 1x ¾" PVC Ball Valve
• 1x ¾" Nipple - 6" long
• 1x ¾" Nipple - 4" long
• 1x ¾" Nipple - 1 ½" long
• 1x ½" Poly Adaptor
• 2x ½" Poly Elbows
• 2x ½" PVC Plugs
• 1x ¾" PVC Plug
• 2x #20 Hose Clamps
• 2x #8 Hose Clamps
• 1x Roll of Teflon Tape
• 1x Fill Port
• 5ft Fill Hose
• 5ft ⅝" ID Vinyl Hose

More Information:

Wheel Well & Undermount Water Tank FAQ Sheet

Full Details of the Fresh Water Fittings Kit Add-On
Select this add-on with your tank purchase and save $20 vs buying separately!

Check out our Transit Undermount Water Tank (17 Gallon)

Check out our Transit Undermount Water Tank (10 Gallon)