The 22 gallon Sprinter undercarriage tank (SP-UC-22) mounts right next to your fuel tank, out of sight under the driver side of your Sprinter. AVC RIG carries this NW Conversions tank from GoCode.
About the 22 Gallon Sprinter Undercarriage Tank
It fits in space that would otherwise go unused. Three laser-cut stainless steel straps use the existing fuel tank strap mounting points. That keeps new holes to a minimum and the install clean.
22 Gallon Sprinter Undercarriage Tank Specs
- Nominal dimensions: 46" L x 12.5" W x 10" H (actual dimensions may vary up to 1.5% each)
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Capacity: 22 gallons
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Dry weight: 14 lbs
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Filled weight: 197 lbs
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Recommended sensor: KUS S5U-8
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Recommended heating pad: Facon CW-T1218 (x2)
- Not designed for pressurized systems, must be vented
Materials and Certifications
- BPA-free, food-grade polyethylene
- IAPMO TS 4 Certified
- Made in the USA
- TEi listed and RVIA approved


What's Included
- Water tank
- (3) stainless steel laser-cut mounting straps
- Stainless 3/8" hardware and 3/8" rivnuts
- Note: rivnut tool required, not included
Ports and plumbing:
- (2) 1.5" NPT ports on the rear-facing end
- (2) 1/2" NPT ports on the rear-facing end
- (1) 1.5" NPT port on top, 8.5" back from the end
Compatibility
- Mercedes Sprinter 2007-present, all wheelbases
- Driver side undercarriage, next to the fuel tank
- May fit other makes and models, confirm dimensions before ordering
- Compatible with AMP Research PowerStep Electric Running Boards for 2019+ Mercedes Sprinter 907/VS30 (part #76264-01A), and may be compatible with other running boards

Planning Your Water System
The 22 gallon Sprinter undercarriage tank is not designed for pressurized systems, so plan a vent. Filled, it weighs 197 lbs. Have a rivnut tool ready, since it is not included. Plan your plumbing runs from the rear-facing NPT ports up into the van.
Shipping and Lead Time
Ships in 1-2 business days.
Note: Despite great care during manufacturing and fulfillment, plastic tanks can get dirty or scuffed in transit. This does not mean the tank is damaged. Plastic tanks can also warp slightly, especially on flat surfaces. This is normal and does not make the tank defective. A perfectly flat surface on a rotationally molded part is not always possible. Every effort is made to keep surfaces within a 1.5 degree tolerance.
Resources
For the passenger side, see the 11-gallon Sprinter undercarriage tank. Shop more Sprinter van conversion parts.