The water valve cap o-ring in your Dometic RV toilet can wear out over time, causing leaks around the valve cap or preventing proper water flow to the bowl. This genuine OEM replacement kit restores a watertight seal and ensures your toilet functions reliably. If you're experiencing drips, water pooling, or difficulty filling the bowl, this kit is the solution.
Key Features
- Genuine OEM Dometic part ensures perfect fit and performance
- Includes complete o-ring replacement kit for water valve cap assembly
- Restores watertight seal to prevent leaks and water waste
- Simple installation—no special tools required
- Compatible with standard Dometic gravity flush and pressurized toilet models
- Affordable preventative maintenance to avoid larger repair costs
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 385311250 |
| Manufacturer | Dometic |
| Component Type | Water Valve Cap O-Ring Kit |
| Application | Dometic RV Toilets |
| Material | Rubber/Elastomer |
| Quantity | Kit (replacement o-rings) |
Frequently Asked Questions
Q: How do I know if my water valve cap o-ring needs replacement?
A: Look for water dripping or pooling around the base of the valve cap, difficulty filling the toilet bowl, or water leaking onto the floor beneath the toilet. These are clear signs the o-ring seal has degraded and needs replacement.
Q: Is this kit compatible with all Dometic toilets?
A: This kit is designed for standard Dometic gravity flush and pressurized toilet models. We recommend verifying your specific model number before ordering. Contact our expert support team if you're unsure.
Q: How difficult is the installation?
A: Installation is straightforward and requires no special tools. Simply turn off water supply, remove the valve cap, replace the worn o-ring with the new one from the kit, and reinstall. Most RV owners can complete this in under 10 minutes.
Why Elkhart RV Parts?
We specialize in hard-to-find Dometic RV replacement parts and ship directly from Elkhart, Indiana—the RV capital of the world. Every part we sell is genuine OEM, ensuring it meets Dometic's exact specifications. Our expert support team is ready to help you identify and install the right part for your RV.
| Brand | Dometic |
|---|---|
| Product type | Toilet Water Valve Cap O-Ring Replacement Kit |
| Part number | 385311250 |
| Oem | true |
| Compatible models | Dometic TW series and similar waste management systems |
| Kit contents | O-ring and cap |
| Application | RV portable toilets and waste systems |
| Installation type | DIY |
| Primary function | Water valve sealing |
| Key benefits | Prevents leaksMaintains watertight sealRestores valve function |
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.