11-Gallon Mercedes Sprinter Undercarriage Fresh/Grey Water Tank (SP-UC-11)

About the Product

11-Gallon Sprinter Undercarriage tank claims the unused space under your slider door without drilling a new hole in your floor. Mounts between the Sprinter’s frame and the passenger-side slider door step cutout, using otherwise wasted undercarriage space. Use it as a fresh water tank or a grey water tank. The tank body is sloped (2% grade), which makes it grey water compatible. TEi lists it as both a potable water tank and a waste holding tank. It works well as a dedicated grey tank paired with a larger fresh water setup, or on its own for fresh water.

⚠️ Gas engine Sprinters: The exhaust runs closer to the frame on gas models. A heat shield (not included) should be installed between the tank and exhaust before use.

Features

Specifications

• Nominal dimensions: 38" L x 12.5" W x 9.875" H
  • Actual dimensions may vary up to 1.5% each.
• Capacity: 11 gallons
• Dry Weight: 12 lbs
• Filled Weight: 104 lbs
• Recommended Sensor: KUS S5U-8
• Recommended Heating Pad: Facon CW-T1218 (x2)
• Not designed for pressurized systems, must be vented

Materials & Certifications

• BPA-free, food-grade polyethylene
• Made in the USA
• TEi listed and RVIA approved
  • TEi listed to IAPMO TS 4 for fresh water
  • TEi listed to IAPMO TS 2 and CSA B45.6 for grey water (waste holding)

What's Included

• Water Tank
• (2) different stainless steel laser-cut mounting straps (for the slope)
• Stainless 3/8" hardware and 3/8" rivnuts
• Note: rivnut tool required, not included

Ports & Plumbing

• (1) 1.5" NPT port on the rear-facing end
• (2) 1/2" NPT ports on the rear-facing end
• (1) 1.5" NPT port on top

Shipping & Lead Time

• Ships in 1-2 business days

Note: Despite great care taken during manufacturing and fulfillment, plastic tanks can become dirty and/or scuffed in transit. This does not constitute a damaged tank. Plastic tanks can also become slightly warped, especially on the flat surfaces. This is normal and does not render the tank defective. Maintaining a completely straight/flat surface on a rotationally molded part is not always possible, but we make every effort to keep surfaces within a 1.5 degree tolerance.

Compatibility

• Mercedes Sprinter 1500/2500/3500 (2007-present), wheelbases 144", 170", and 170" EXT
• Passenger side, under slider door step area
• May fit other makes and models, confirm dimensions before ordering
• Compatible with AMP Research PowerStep Electric Running Boards for 2019-2021 Mercedes Sprinter (part #76264-01A), may be compatible with additional running boards

Resources

• Install guides
• TEI Listing