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Northwest Conversions 19 Gallon Slim Dually Wheel Well Water Tank

$ 319.00
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Introducing the Northwest Conversions 19 Gallon Slim Dually Wheel Well Water Tank! Designed to use the wasted space around the well and not take up any space between the wheel wells.  Allowing full width between the wheel wells for more gear or cabinetry.  Tank is designed to fit the Sprinter 2500, 3500, Sprinter T1N and Transit single and dual wheel vans. The tank can also fit other vehicle makes and models.Check out exterior tanks: Additional Undercarriage 16 gallon water tank or The 11 Gallon Sprinter Undercarriage Water Tank

  • 19 Gallon Wheel Well Water tank. This tank is designed to not take up any space between the wheel wells of the van. The tank is a more slim version of our SP-DU-25 wheel well water tank.
  • Designed for the Sprinter 2500 and 3500 Dually.  Fits Transit 2500 and 3500 Dually also.
  • Will fit other makes and models
  • 46" Long, 20" Tall and 10" Wide
  • (2) 1.5" NPT ports and (2) 1/2" NPT Ports on larger end
  • (1) 1.5" NPT port on TOP
  • (1) 1.5" NPT port and (1) 1/2" NPT port on end that goes above wheel well
  • Support plate and hardware for the support plate are included.
  • TRANSIT Van wheel wells are slightly smaller than the Sprinter so there is a bit more room for insulation around wheel well.
  • **PROMASTER**  needs to be elevated about 3.5" to fit the large wheel wells.
  • Can be placed either driver or passenger side in front or rearward of the wheel well.
  • Tank is designed NOT to be PRESSURIZED  (I.e.  Needs to be vented).
  • Tanks are made from BPA Free Food Grade Plastic
  • IAPMO TS 4 Tested and Certified
  • Made in the USA

Specifications: Northwest Conversions 19 Gallon Slim Dually Wheel Well Water Tank

Weight: 27 lbs
Dimensions: 48 × 10 × 20 in

Video: Northwest Conversions 11 Gallon Sprinter Undercarriage Water Tank SP-UC-11


Vehicle fitment

Product type
Water system component
Vehicle
Camper vans, RVs, trailers, and mobile builds
Summary
Camper vans, RVs, trailers, and mobile builds that need a compatible water system component. Confirm capacity, fitting sizes, hose routing, mounting location before ordering. Product listing notes: Northwest Conversions 19 Gallon Slim Dually Wheel Well Water Tank Introducing the Northwest Conversions 19 Gallon Slim Dually Wheel Well Water Tank! Designed to use the wasted space around the well and not take up any space between the wheel wells. Allowing full width between the wheel wells for more gear or cabinetry. Tank is designed to fit the Sprinter 2500, 3500, Sprinter T1N and Transit single and dual wheel vans. The tank can also fit other vehicle makes and models.Check out exterior tanks: Additional Undercarriage 16 gallon water tank or The 11 Gallon Sprinter Undercarriage Water Tank 19 Gallon Wheel Well Water tank. This tank is designed to not take up any space between the wheel wells of the van. The tank is a more slim version of our SP-DU-25 wheel well water tank.

Fitment FAQ

What does this Northwest Conversions 19 Gallon Slim Dually Wheel fit?

This Northwest Conversions 19 Gallon Slim Dually Wheel fits Camper vans, RVs, trailers, and mobile builds.

Is this product vehicle-specific?

This water system component is not tied to one van generation. Fit depends on measurements, installation requirements, and the build layout.

What should I verify before ordering?

Confirm capacity, fitting sizes, hose routing, mounting location before checkout.

What installation details matter?

Confirm capacity, fitting sizes, hose routing, mounting location before ordering. Use professional installation when safety-critical, structural, electrical, fuel, water, or suspension work needs to be verified.

Who is this product best for?

This water system component is intended for camper van conversions, RV upgrades, overland builds, and mobile installations where the product specifications match the build.

Campervan HQ fitment guide

Northwest Conversions 19 Gallon Slim Dually Wheel Well Water Tank for camper van and RV builds

Northwest Conversions 19 Gallon Slim Dually Wheel Well Water Tank supports Camper vans, RVs, trailers, and mobile builds applications where fitment, measurements, installation requirements, and build layout should be confirmed before ordering.

Why choose this product?

  • Supports camper van, RV, and mobile build planning
  • Helps confirm measurements, installation needs, and clearances before checkout
  • Useful for matching the product to the build layout before ordering

Installation context

  • Confirm measurements and clearances
  • Review wiring, mounting, sealant, or material requirements where relevant
  • Use professional installation when the build requires it

Compatibility notes

Camper vans, RVs, trailers, and mobile builds that need a compatible water system component. Confirm capacity, fitting sizes, hose routing, mounting location before ordering. Product listing notes: Northwest Conversions 19 Gallon Slim Dually Wheel Well Water Tank Introducing the Northwest Conversions 19 Gallon Slim Dually Wheel Well Water Tank! Designed to use the wasted space around the well and not take up any space between the wheel wells. Allowing full width between the wheel wells for more gear or cabinetry. Tank is designed to fit the Sprinter 2500, 3500, Sprinter T1N and Transit single and dual wheel vans. The tank can also fit other vehicle makes and models.Check out exterior tanks: Additional Undercarriage 16 gallon water tank or The 11 Gallon Sprinter Undercarriage Water Tank 19 Gallon Wheel Well Water tank. This tank is designed to not take up any space between the wheel wells of the van. The tank is a more slim version of our SP-DU-25 wheel well water tank.

Common use cases

  • Camper van conversions
  • RV upgrades
  • Trailer and overland builds