Promaster Wheel Well Water Tank (22 Gallon)

Full Details:

Save valuable space with our Ram Promaster Wheel Well Water Tank. Extra storage is key when it comes to life on the road, and that is where this nifty freshwater tank comes in. Designed exclusively with efficiency in mind, these water tanks utilize that awkward area around your wheel well that often gets wasted The tank also acts as additional soundproofing when it comes to road noise.

Holding 22 gallons of freshwater goodness, these water tanks are custom-designed to fit around the Promaster’s wheel well. They can also be used in Sprinters and Transits, with a little extra room around the wheel well, which can be easily be filled with insulation. 

If you're looking for more volume, check out our 32 Gallon Wheel Well Water Tank!

Need a grey water tank? Bundle your freshwater wheel well tank with our 15 Gallon Promaster Undermount Tank! The undermount tank fits snugly under the passenger side of your Promaster’s framed 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 - Option to choose a passenger or driver side tank - whichever wheel well works best for your build. Need more water? Choose both and 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!
• Fittings Kit Add-On Available - Save yourself the headache and multiple trips to the plumbing store when you bundle this tank with our Freshwater Fittings Kit!
• Strapping Kit Add-On Available - Weather-resistant strapping crafted from heavy-duty 1/8" thick, 1 1/2" wide aluminum. Simple and secure! 
• Water Level Sender & Gauge Kit Add-On Available - This water tank has a fitting specifically designed for use with the KUS S5U Water Level Sender!
• Compatible - Pairs well with our 15 Gallon Promaster Undermount Water Tank. 

Dimensions & Specifications:

Designed for the Ram Promaster 136", 159" & 159" extended wheelbases.

Compatible with the Mercedes Sprinter & Ford Transit, all wheelbases.

Tanks are made from linear low-density polyethylene. 

Food grade CSA approved and BPA free - safe for freshwater use.

22 US Gallons / 83.2 Litres

42.5” x 13” x 19” (Length x Width x Height)

1 x 1 ½” drill-out membrane port (on top at one end)

1 x 1 ¼" drill-out membrane port (on top at one end)

1 x 1 ¼" drill-out membrane port (on side rear end)

1 x ¾" port (on side rear end)

2 x ½” ports (on side rear end)

1 x ½” ports (on side front end)

All ports are NPT female-threaded.

Tank can be placed on either the PASSENGER SIDE or DRIVER SIDE of the van.

• Passenger side tank sits 8.5” behind wheel well on passenger side / in front of the wheel well on driver’s side.
• Driver side tank sits 8.5” behind wheel well on drivers side / in front of the wheel well on passenger side.

Fits around the wheel well with or without flooring installed in the van.

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 #20 Hose Clamps
• 2x #8 Hose Clamps
• 1x Roll of Teflon Tape
• 1x Fill Port
• 5ft Fill Hose
• 5ft ⅝" ID Vinyl Hose

Aluminum Strapping Kit Add-On:

• Specifically designed for your Promaster Wheel Well Water Tank
• Kit includes 2x Heavy-Duty Aluminum Straps & Aluminum Mounting Hardware

More Information: 

Wheel Well & Undermount Water Tank FAQ Sheet

FAQ Sheet for the Promaster Wheel Well Water Tank (22 Gallon)

Unbiased Review of the Promaster Wheel Well Water Tank (22 Gallon)

Full Details of the Fresh Water Fittings Kit Add-On

Select this add-on with your tank purchase and save $$ vs buying separately!

Full Details of the Aluminum Strapping Kit Add-On

Select this add-on with your tank purchase and save $$ vs buying separately!

Check out our Promaster Wheel Well Water Tank (32 Gallon)

Check out our Promaster Undermount Water Tank (15 Gallon)

Install Instructions:

Freshwater Fittings Kit Install Instruction

Weight & Dimensions

Specifications

Compatibility

Designed for the Ram Promaster 136"", 159"" & 159"" extended wheelbases.

Compatible with the Mercedes Sprinter & Ford Transit, all wheelbases.

FAQ

Can I add fittings to my water tank?

We can't add any additional fittings to your tank as they are made in batches. The fittings are spin welded on requiring specialized equipment. There is likely a spin welder in your local area that can add additional fittings for you if needed.

What is the water tank wall thickness? 

The standard wall thickness of our water tanks is approximately 3/16”.

Is this tank compatible with a water level sensor?

Yes! Check out our KUS Water Level Sensors and Gauges.