Utilize the wasted space underneath your Ford Transit to add fresh water storage with our Northwest Conversions Ford Transit 20-Gallon Undercarriage Water Tank (Driver Side) w/ Stainless Brackets (TR-UC-20) from Nomadic Supply Company. Our Ford Transit 20-Gallon Undercarriage Water Tank is custom designed to fit under the driver side of the van next to the OEM fuel tank. This water tank can be used for storing fresh or gray water and comes with 3 stainless steel mounting brackets and all required installation hardware.
This water tank is designed and fabricated by our friends at Northwest Conversions in Bellingham, Washington. Please allow 1 week for shipping as they are a one-man operation. Northwest Conversions will not ship water tanks to Canada.
All Northwest Conversions Camper Van Water Tanks are TEI Tested & RVIA Approved!
The RV Industry Association (RVIA) has adopted standards for the construction of RVs, including those falling under the ANSI, NEC, NFPA, and other national accreditation associations. Products are tested and verified by independent listing agencies – in this case, Testing Engineers International (TEI). This guarantees that member manufacturers such as Northwest Conversions build their products to conform to standards based on safety and quality, but also ethical and sustainable business practices and community engagement.
Purchasing your Northwest Conversions camper van water tanks from Nomadic Supply Company means that you’ll receive products you can depend on. Designed and built in the US according to the highest standards in the industry, Northwest Conversions provides the parts you need while helping to provide greater opportunities for safely exploring our wild lands now and in the future.
Ford Transit 20-Gallon Undercarriage Water Tank (Driver Side) (TR-UC-20) Fitments:
Our Ford Transit 20-Gallon Undercarriage Water Tank (Driver Side) w/ Stainless Brackets (TR-UC-20) fits any Ford Transit van except:
- Does NOT Fit Transit 130 Wheel Base
- Does NOT Fit Transit with Factory Running Boards
Ford Transit 20-Gallon Undercarriage Water Tank (Driver Side) (TR-UC-20) Features:
- Water Tank fits ONLY Driver side next to the OEM fuel tank.
- Water Tank is designed for non-pressurized systems. The tank must be vented.
- Water Tank is made from BPA Free Food Grade Polyethylene Plastic
- Water Tank can be used for fresh water or gray water
- Water Tank Accepts variety of universal fittings
- Fits Transit Van undercarriage driver side.
- Tank is designed not to be pressurized (I.e. Needs to be vented).
- Tank has (2) 1.5″ NPT port and (2) 1/2″ NPT ports on end and (1) 1.5″ NPT port on top.
- Installation will require a Rivnut tool. Rivnut tool is not included.
- Ford Transit 16-Gallon Undercarriage Water Tank has (1) 1.5″ NPT port and (2) 1/2″ NPT ports on end that will face the rear of van.
- Water Tank External Dimensions are 45″L x 8.5″H x 12.75″W.
- (3) Stainless steel Brackets, Stainless steel 3/8″ hardware, and rivnuts included.
- Requires drilling of (3) new holes (17/32″) for 3/8″ rivnuts near pinch weld for one side of the strap and the other side of the strap will use the same bolt and location as the fuel tank straps.
How to Clean Our Camper Van Water Tanks:
Make sure you rinse the water tank before first use, as there can be plastic bits left in the tank from the manufacturing process.
Nomadic Supply Company recommends using our Lippert Floë Compressed Air Camper Van Fresh Water Flushing System throughout the year to keep your water system completely pristine. In addition to flushing your water system you can also use bleach or vinegar to clean our fresh water tanks, or you can one of our camper van fresh water tank cleaning solutions. To clean your tank with bleach or vinegar follow the instructions below.
Step 1: Drain the water tank completely
Step 2: Mix 4 oz bleach or vinegar with 1 1⁄2 gallons of hot water
Step 3: Pour bleach/vinegar solution into tank
Step 4: Fill tank with fresh water until its full
Step 5: Let sit for 12 hours
Step 6: Drain the water tank completely, refill with fresh water and drain completely again (you may need to repeat this rinse step a few times)
Camper Van Water Tank Venting:
Polyethylene camper van water tanks must be vented. These fresh water tanks are not designed to handle pressure or a vacuum. A vent is necessary because as the tank is filled or emptied of its liquid an equal proportion of air must be displaced simultaneously. Discharge of a water tank without a vent would cause a vacuum to occur. A generally accepted rule concerning vent size is that it should be the same size as the tank’s largest outlet.
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to