The Dometic Tank Full Relay Kit (Part# 385311888) is the control component that monitors and signals when your MasterFlush toilet's waste tank reaches capacity. This relay kit prevents overflow and alerts you when it's time to empty the tank, making it essential for maintaining proper RV sanitation system operation.
- Genuine Dometic OEM relay kit for accurate tank level detection
- Compatible with Dometic MasterFlush toilet systems
- Prevents tank overflow with reliable full-tank notification
- Direct replacement for worn or malfunctioning relay units
- Easy installation with existing MasterFlush wiring harness
- Durable construction designed for RV mobile environments
| Specification | Detail |
|---|---|
| Part Number | 385311888 |
| Manufacturer | Dometic |
| System Type | MasterFlush Toilet Tank Full Relay |
| Function | Tank capacity monitoring and alert relay |
| Installation | Direct replacement for existing relay |
Frequently Asked Questions
Q: How do I know if my tank full relay needs replacement?
A: If your MasterFlush toilet's tank full indicator light doesn't illuminate when the tank is full, or if it stays on constantly, the relay kit likely needs replacement.
Q: Will this relay kit work with older MasterFlush models?
A: This genuine Dometic part is designed for specific MasterFlush toilet generations. Verify your model number before ordering to ensure compatibility with your system.
Q: Is professional installation required?
A: Most RV owners can install this relay kit themselves by disconnecting the old unit and connecting the new one to the existing wiring harness. Consult your MasterFlush manual for detailed instructions.
Why Choose Elkhart RV Parts
We specialize in hard-to-find Dometic replacement parts for RV sanitation systems. Shipping directly from Elkhart, Indiana—the RV capital of the world—we stock genuine OEM parts and provide expert support to help you identify the exact relay kit your MasterFlush toilet needs.
| Brand | Dometic |
|---|---|
| Product type | Tank Full Relay Kit |
| Compatible models | MasterFlush 510MasterFlush 510+MasterFlush 511 |
| Part number | 385311888 |
| Category | RV Toilet Parts |
| Component type | Electrical Relay |
| Function | Tank-full sensing and automated flushing control |
| Installation type | Plug-in |
| Oem part | true |
| Condition | New |
| Primary use | Sanitation system maintenance and overflow prevention |
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.