Fix a Leaking or Failing RV Water System
Pump cycling, a drip under the sink, no hot water or a leaking inlet: diagnose it in five minutes and get the exact replacement part.
Find the symptom, get the part
Water problems on a camper are almost always one of six things. Work down the list; each one names the part.
Pump runs every few minutes with no tap open. A pressure leak: usually a loose fitting at the pump, a split low-point drain, or a leaking toilet valve. Start with fittings for the water pump — view current price and hose clamps. Full diagnosis: RV water pump cycling.
Water around the fill inlet. The gravity fill on Black Series RVs seals with a foam gasket that hardens. Replace the Black Series OEM Water Inlet — view current price — fits HQ12–HQ21, TH19, TH22, Dominator.
No hot water, or the heater won't light. Check the water heater bypass valve — view current price isn't still in winter position. If the unit itself has failed, the tankless water heater — view current price is the OEM replacement.
Tank reads empty or full all the time. RV water tank level gauge — view current price.
Tank is cracked or the straps have let go. Stainless drinking water tank, 16 gal — view current price and support bars for tank — view current price; universal 10-gallon and 19-gallon tanks for other rigs.
Faucet drips or the outside shower leaks. Pump faucet — view current price (OEM) · RV exterior quick-connect shower faucet — view current price · Dometic fold-down galley faucet — view current price.
Before you order
Black Series plumbing changed between model years. Photograph the failed part and the fitting sizes and send them to support@rvpartsgiant.com with your model — we confirm the part before it ships. Every plumbing part is in the Water collection and the RV Water System Kit.
Winter is the usual cause
If the leak appeared in spring, the line froze. Winterize properly this fall, or book the Winterization Service — view current price.
Questions about a part or an order?
Send us the part or order number and our Upland, California team will help.