Blessed Performance has the SB 20 Gallon Wheel Well Water Tank (Both Sides).
Tank Dimensions:
44.5" Length x 12.5" Width x 16" Height
* Tank dimensions are approximate. Dimensions can vary up to .5".
Fits all single-rear-wheel Mercedes Sprinter and Ford Transit vans. This product will not fit on dually vans.
TEI Tested & Listed / RVIA Approved / BPA Free.