SKU: 95232650189

Promaster Wheel Well Water Tank (22 Gallon)

Sale price$157.05 Regular price$174.50
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Ships within 48 hours · Estimated delivery Oct 31 - Nov 5

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Promaster Wheel Well Water Tank (22 Gallon)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

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

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 95232650189

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CurvvyMermaid
New York, US
★★★★★ 5
Clear Skin Staple—Gentle Yet Effective and Pairs Perfectly with My Favorite Facial Pads
Style: Blemish Clearing Toner, Size: 12 Fl Oz (Pack of 1)
This toner is my daily go-to for keeping my face in check. It’s gentle on my skin but packs a punch when it comes to keeping my sensitive skin clear and fresh. I use it every morning and night, and my skin has never looked more balanced. It doesn’t sting or dry me out, and it layers beautifully with my other products. Total game changer. I use Thayers Blemish Clearing Toner with the ForPro XL Facial Pads and the combo is perfection. The toner glides on smoothly, and the pads help distribute it evenly without soaking up too much product. My skin feels clean, refreshed, and noticeably clearer. If you’re looking for a refreshing, non-harsh toner to add to your routine that’s simple and effective, this duo is it!
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Reviewed in the United States on November 7, 2025
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Ladetra Green
Port Orchard, US
★★★★★ 5
Gentle, yet very effective
Style: Blemish Clearing Toner, Size: 12 Fl Oz (Pack of 1)
I've used multiple exfoliating toners in the past but none were as effective as this one. I have been using it for 3 days now along with the La Roche-Posay Toleriane Purifying Foaming cleanser and it's cleared the whiteheads on my chin quite a bit and made my face feel and look smooth. Will continue to repurchase.
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Reviewed in the United States on May 4, 2026
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Katie W
Natrona Heights, US
★★★★★ 5
Finally Something That Works For Me
Style: Blemish Clearing Toner, Size: 12 Fl Oz (Pack of 1)
Imma be honest - I haven’t had great skin for over 30 years. I feel like like there’s always :something: that makes me resort to only being comfortable wearing make-up any day I have to see people / leave the house. But, I started using Thayers in October 2025 (I created my own “Thayers system”: salicylic toner, salicylic pads, and - at times - the stuff in the little dropper bottle) and I can honestly say that :finally: something is working for my skin! I have tried everything! But Thayers is it for me these days. Thank you!!
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Reviewed in the United States on May 27, 2026
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Heather
Natrona Heights, US
★★★★★ 5
Awesome!
Style: Blemish Clearing Toner, Size: 12 Fl Oz (Pack of 1)
Love this product! I've used witch hazel for a long time as a toner and to help keep acne under control. Thayer's is the brand I've always used and loved. This one is specific for acne and blemishes, so I thought I'd give this blend a try. There is a slight fruit loop smell (it fades quickly!) and I feel like it's slightly sticky (which is not how plain witch hazel feels) but that also goes away as it dries. I use this anywhere on my face, but especially where there are blemishes and acne. It works well, and doesn't seem to adversely react with my rosacea , which is a plus! I let it air dry, then apply my favorite moisturizer. Results come quickly, and I love how clean and fresh and skin feels!
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Reviewed in the United States on March 16, 2026
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Ragamuffin
New York, US
★★★★★ 5
Great Toner!
Style: Blemish Clearing Toner, Size: 12 Fl Oz (Pack of 1)
I have both rosacea and acne. I use this to control my acne breakouts, and it never makes my rosacea flare up. It’s really good toner & I highly recommend it. It has never made me have any sort of rash/breakout/reaction.
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Reviewed in the United States on May 5, 2026

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