20 Gallon Water Tank SP-R-20

(4 customer reviews)


SKU: SP-R-20 Category:



  • 20 Gallon Water Tank
  • Can be placed either driver or passenger side
  • If placed passenger side the tank sits with majority rear of wheel well and flush to front of wheel well.
  • If placed driver side the tank sits with majority front of wheel well and flush to rear of wheel well.
  • 44.5” long, 12.5” deep, 16” tall
  • Designed to fit Sprinter Van
  • 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 3.5″ to fit the large wheel wells.
  • Tank has (2) 1.5” NPT ports (need to be drilled out) and (2)1/2” NPT ports on rectangular end.  No Ports on open end.
  • Tank has (1) 1.5” NPT port (needs to be drilled out) on top or fill or level sensor.
  • Tanks are made from BPA Free Food Grade Plastic


  • Please allow 10 days for processing.
  • RETURNS are accepted up to 180 Days if the tank has not been installed or altered in any way.  The tank will need to be shipped back in the box purchased in and tracking information provided.  $25 restocking fee.
  • Made in the USA

The 20 gallon wheel well water tank is designed to use the wasted space around the well. It is designed to fit the Sprinter 2500 and also fits the Sprinter T1N and Transit single rear wheel vans. The tank can also fit other vehicle makes and models. Tank measurements are 44.5” long x 16” tall x 12.5” deep.

Additional information

Weight 25 lbs
Dimensions 48 × 13 × 16 in

4 reviews for 20 Gallon Water Tank SP-R-20

  1. Natalie Kane

    This fits super well over the wheel well of my 2019 Freightliner Sprinter with space for insulation and sound deadening. The plastic is nice and all of the welds seem tight.

    Other models I have seen come with mounting brackets and hardware, I would have liked for this to come with that. Also, I would like to see a video (or a brief instruction manual?!) on how to use the holes provided. I understand how to drill out the holes, but I’m not a plumber and I can’t read minds. I would like to know what each hole’s intended use was instead of guessing.

  2. Noriel Simsuangco (verified owner)

    Great Water Tank! Fits like a glove in our 2019 MB Sprinter Van. We are very happy with the product and great customer service! Thank you!

  3. joshua smith (verified owner)

  4. David (verified owner)

    Tanks look great but haven’t installed yet.

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