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S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021
S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021
S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021
S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021
S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021
S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021
S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021
S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021
S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021
S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021
S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021
S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021
S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021

S&B

S&B 36 Gallon UNDERCARRIAGE Fresh/Grey WATER TANK FOR 2013-2025 DODGE / RAM PROMASTER 2500, 3500 159” AND 159" EXT - 10-3021

SKU: SKU: S&B10-3021

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This item is classified as Oversized and may incur an additional handling fee at checkout depending on your shipping location. No additional fees apply for pickup orders.
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S&B 36-gallon fresh-water/grey-water tank for 2013-2025 Dodge / RAM Promaster 2500, 3500 159” And 159" EXT. Engineered to bolt into the undercarriage for a clean, OEM-style install that adds serious water capacity for overland, van-life and work-truck builds.

Why upgrade? S&B water tanks are vehicle-specific — shaped to use otherwise wasted space without compromising ground clearance or cargo room. The result is a low-profile, sealed reservoir that survives the road just like the truck it's bolted to.

  • 36-gallon usable capacity
  • Vehicle-specific fit using existing mounting points where possible
  • Cross-linked polyethylene construction — UV and impact resistant
  • NSF-compliant for potable water (verify with your installation kit)
  • Compatible with S&B mounting hardware and plumbing accessories

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