98 Gallon RV Water Tank & Universal Fresh Water Tank Fittings Kit

Do not order the fitting kit solely because the tank is listed as 98 gallons. First identify the exact tank and its supplied connection configuration. The current Elkhart Plastics listing uses 3038/W1435000 and nominal 59 × 58 × 7-inch dimensions, but its linked part-3038 drawing shows a 7-inch body plus a 1½-inch lower projection and an 8½-inch overall height in the right view. It also labels a 1-inch vent tube. That drawing and the listing's “blank” description do not establish the exact openings or fittings supplied with a particular order. Check the full drawing and configuration before planning clearance or cutting holes.

The ERVP fresh-water tank fittings kit is a grommet-and-probe kit. Its installation sheet describes drilled grommet openings and separate sensor holes; it is not a tank-specific port drawing or proof that the kit supplies every hose, valve, adapter or monitoring connection your installation needs. “Universal” does not confirm a match to threaded or welded connections. Verify the tank's actual ports, wall/mounting requirements, pipe sizes, sensor system and required fittings before choosing the kit. No kit-to-tank fit is confirmed here.

A 6-inch available height will not accommodate the illustrated 3038 tank. A different tank requires its own dimensional drawing, including drain, vent, fitting projections and support clearance. At the same 59 × 58-inch footprint, even a perfect 6-inch-deep rectangular box holds only about 89 US gallons before allowing for walls or molded features; 98 gallons at that height would require a larger footprint. This calculation is a space limit, not a replacement tank's rated capacity.

Use the 3038/W1435000 listing and drawing as an identification reference. Provide the available length, width and total height, existing tank label, port locations and plumbing photos when comparing alternatives. A 6-inch-deep replacement near the requested capacity has not been verified here; custom sizing, custom fitting service and interchangeability are not established by this answer.