Relocate your Mercedes Sprinter spare tire from under the van to the rear door of your van and then you can free up the spare tire basket for 28 gallons of fresh water storage with the Mercedes Sprinter 28-Gallon Spare Tire Basket Water Tank (SP-ST-28) from Nomadic Supply Company! Our 28-Gallon Spare Tire Basket Water Tank sits perfectly inside your factory Mercedes Sprinter tire basket under the back of the Sprinter van. Our Mercedes Sprinter 28-Gallon Spare Tire Basket Water Tank fits any Mercedes Sprinter 2500 2007-present and fits the Winnebago Revel.
The Northwest Conversions Mercedes Sprinter 28-Gallon Spare Tire Basket Water Tank (SP-ST-28) is designed specifically to fit the Sprinter 2500 spare tire basket if you have a Sprinter 3500 you will need to buy a factory a tire basket from a Sprinter 2500 for this water tank to fit.
The Mercedes Sprinter 28-Gallon Spare Tire Basket Water Tank (SP-ST-28) tank accepts 1/2″ (black plugs) and 1-1/2″ (need to be drilled) NPT fittings.
The Northwest Conversions Mercedes Sprinter 28-Gallon Spare Tire Basket Water Tank (SP-ST-28) can be filled by gravity feed or hose using our fill kit. To transfer water from the tank you’ll need a water pump or to plumb it into a system with the ability to siphon.
The Mercedes Sprinter 28-Gallon Spare Tire Basket Water Tank (SP-ST-28) is designed to fit the factory location using only the factory hardware and holder. No other hardware is needed. Tank fits Mercedes Sprinter 2500 2007-present and Winnebago Revel.
Mercedes Sprinter dually vans (3500) are not the same as Sprinter 2500’s. You might need to modify your spare tire brackets or cut spacers from the frame of the van. Dually wheels are narrower in width than non dually wheels, so the spare tire basket isn’t the same. The Mercedes Sprinter 28-Gallon Spare Tire Basket Water Tank (SP-ST-28) is made for the Sprinter 2500.
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.
Mercedes Sprinter 28-Gallon Spare Tire Basket Water Tank (SP-ST-28) Features:
- Water Tank has a 28-gallon capacity
- Water Tank accepts 1/2″ plugs and 1-1/2″ NPT fittings
- Water Tank Fits Mercedes Sprinter 2500 Third Generation (VS30) 2019+, Second Generation (NCV3) 2008-2018
- Dually Sprinter van 3500: You will likely need to lower the brackets or cut spacers from the frame. The Dually wheel is much narrower in width. Please measure your van before ordering.
- Water Tank fits Winnebago Revel.
- Water Tank Fits Sprinter Factory Spare tire location. NO extra hardware required!
- Water Tank Sprinter 170″ Extended may have different brackets. Please confirm before ordering.
- Water Tank can be used for fresh or grey water
- Water Tank Overall dimensions: 28″ W x 30″ L x 10″ H.
- Water Tank has (2) 1.5″ NPT port and (1) 1/2″ NPT ports on driver side.
- Water Tank has (1) 1.5″ NPT port and (1) 1/2″ NPT port on top that can be used for float sensor or vent.
- Water Tank is Made in the USA
- Water tanks are made from BPA Free Food Grade Plastic
How to Install Our Camper Van Water Tanks:
The first step is to always orient the water tank so that our logo, NW Conversions, is facing up, on the top of the tank. The top of the water tank will also always have a 1.5 inch water level sensor location or water fill port. All of the water tank ports are 1.5″ and .5″. The .5″ ports will be provided with plugs in them. Use a 3/8″ T-handle Allen key tool to remove the plugs. Reinstall the plugs in unwanted ports along with using plumber’s tape to seal the threads.
The 1.5″ ports have a membrane that is water tight. To remove this membrane use a 1 3/4″ hole saw that is slightly smaller than the threads to drill your desired 1.5″ ports out. Make sure to clean all loose plastic particles out of the tank before installing the fittings. This is easiest to do with an air compressor or vacuum. Once again, use plumber’s tape or pipe sealant on all fittings.
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