SKU: 65888202840

Transit Undermount Water Tank (10 Gallon)

Sale price$112.95 Regular price$125.50
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 20 - Aug 25

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Description

Transit Undermount Water Tank (10 Gallon)This undercarriage tank is designed to fit snugly under the passenger or driver side of your Transit's framed undercarriage; these tanks are the perfect solution for managing your water while relaxing at the campsite! This tank was designed with versatility in mind! Use this tank for grey water management, or, bundle this tank with our Freshwater Fittings Kit and use it for freshwater storage under your van, or in your vans interior. Rest easy knowing

This undercarriage tank is designed to fit snugly under the passenger or driver side of your Transit's framed undercarriage; these tanks are the perfect solution for managing your water while relaxing at the campsite!

This tank was designed with versatility in mind! Use this tank for grey water management, or, bundle this tank with our Freshwater Fittings Kit and use it for freshwater storage under your van, or in your vans interior. Rest easy knowing this tank is food-grade CSA certified and BPA-free.

Looking for more volume? Check out our 17 Gallon Transit Undermount Water Tank!

Do you want to spend more time at the campsite and less time searching for water fill-up stations? Bundle your undermount tank with our custom-made 29 Gallon Transit Wheel Well Water Tank! Have a dually? No problem! Check out our 32G Gallon Transit Dually Wheel Well Water Tank!

Key Features & Benefits: 

  • Save Space - Mount underneath your van chassis for extra storage room inside your van - passenger or driver side.
  • Perfect Fit - Designed to fit perfectly under the Transit van, simply position the tank and attach with strapping, no need to make modifications.
  • Durable Design - This tank is tough; rest assured knowing your tank will hold up to exposure and the elements.
  • Multi-Purpose - Use this undermount tank for grey water storage, or bundle it with our Freshwater Fittings Kit to turn this tank into a freshwater reservoir; option to mount in your van's interior, as a freshwater tank. 
  • BPA-Free and Food Grade Approved - These tanks are CSA approved and food grade certified for safe drinking water.
  • Fittings Kit Add-On Available - Save yourself the headache and multiple trips to the plumbing store when you bundle this tank with our Grey Water Fittings Kit or Fresh Water 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 - This tank pairs well with our 29 Gallon Transit Wheel Well Water Tank, or with our 32G Gallon Transit Dually Wheel Well Water Tank!

Dimensions & Specifications:

Designed for the Ford Transit, all wheelbases.
Compatible as an interior water tank, for any van. 

This tank can be mounted on the PASSENGER SIDE or DRIVER SIDE of your van. PLEASE NOTE that our Aluminum strapping kit is compatible with the PASSENGER SIDE ONLY. If you want to mount this tank on the driver side, we suggest using Aluminum or galvanized steel-slotted strapping with 1/4" riv-nuts to secure the tank to your van's undercarriage. Only use corrosion-resistant strapping, as the strapping will be exposed to moisture. Alternatively, please check out our Transit 17 Gallon Undermount Water Tank and strapping kit which is designed for the driver side. 

The end of the tank with the 4x fittings (1 x 1 ¼", 1 x ¾", and 2 x ½") usually faces the rear of van, but the tank can be faced in either direction

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

10.43 Gallons / 39.4 Litres

36" x 9.5" x 8" (Length x Width x Height)

1 x 1 ½” drill-out membrane port (on top)
1 x 1 ¼" 
drill-out membrane port (on top)
1 x 1 ¼" drill-out membrane port (on ONE end)
1 x ¾" port (on ONE end)
2 x ½" ports (on ONE end)

The larger 1 ½”  and 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.

Grey 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 Adaptors
  • 1x ½" Poly Elbow
  • 1x ½" PVC Plug
  • 2x #20 Hose Clamps
  • 1x #8 Hose Clamps
  • 1x Roll of Teflon Tape
  • 5ft Fill Hose
  • 2ft ⅝" ID Vinyl Hose

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

    More Information:

    Wheel Well & Undermount Water Tank FAQ Sheet

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

    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 Transit Undermount Water Tank (17 Gallon)

    Check out our Transit Wheel Well Water Tank (29 Gallon)

    Install Instructions:

    Freshwater Fittings Kit Install Instruction
    Grey Water Fittings Kit Install Instruction
    Strapping Kit Install Instructions for Transit 10 Gallon Water Tank (Passenger Side)

    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: 65888202840

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    4.8 ★★★★★
    Based on 16 reviews
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    Verified Purchase
    Jessi
    Grantham, US
    ★★★★★ 5
    Worked well for my needs!
    Size: X-Large, Color: Black
    Nice thick material. I think these could be workout shirts or regular day attire. Soft, wash well, nice stretch, and arm pit gaps aren’t a so wide they look silly or sloppy. Good value for the money. True to size as well.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 24, 2026
    V
    Verified Purchase
    Veronicat
    Phoenix, US
    ★★★★★ 4
    Great Fit & Great Price
    Size: 3X-Large, Color: White
    The material is very nice and soft but not clingy. It’s light weight but not see through in both white and peach. This tank fits true to size and has no gaps under the arm like some other tanks I’ve tried. It’s a perfect layering piece under shirts and sweaters. Very affordable and well made. I’m a plus size lady who is happy with the fit.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 19, 2026
    D
    Verified Purchase
    Deanna DeCourcy
    Charlottesville, US
    ★★★★★ 5
    Nice tank top. Good quality fabric.
    Size: Medium, Color: Blue
    Comfy and great fit.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 29, 2026
    E
    Verified Purchase
    Elisha
    Grantham, US
    ★★★★★ 5
    Worth it
    Size: Large, Color: Blue
    Soft material, good fit. A little big but im in between a medium and large so I went large. I like the square neck. Pretty color and good material
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 21, 2026
    M
    Verified Purchase
    Melissa Plagge
    Grantham, US
    ★★★★★ 3
    arm holes too large, shirt too long, size down
    Size: Small, Color: Wine
    I am 110 pounds and 5’2”. I ordered a small. The fabric feels awesome. The neck area and straps are perfect. However, the arm holes are quite large. The bottom of the arm hole isn’t straight down, flush with the shirt. It angels outward. If you lift your arms up it looks odd. I should have ordered an extra small. But even if I do that, I still think the arm hole will look odd. I will likely return this or wear it at night or at the gym with yoga pants. The shirt is a tad bit long. If you wear short shorts, the shirt would cover your shorts.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 22, 2026

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