The Dometic 340634 impeller pump is the heart of your RV's fresh water delivery system. This 3.5-inch pump circulates water from your holding tank to faucets, showers, and appliances throughout your motorhome or travel trailer. If water flow is weak or nonexistent, a worn impeller is often the culprit—replacing it restores normal pressure and performance.
- 3.5-inch impeller design for reliable water circulation
- Direct replacement for original Dometic water pump systems
- Handles standard RV fresh water system pressures
- Compatible with 12-volt DC water pump assemblies
- OEM Dometic part ensures proper fit and performance
- Essential maintenance item for aging RV water systems
| Specification | Detail |
|---|---|
| Part Number | 340634 |
| Impeller Size | 3.5 inches |
| Application | Dometic Fresh Water Pump Systems |
| System Type | 12-Volt DC Water Delivery |
| OEM Status | Genuine Dometic Original Equipment |
Frequently Asked Questions
Q: How do I know if my impeller pump needs replacement?
A: Signs include reduced water pressure at faucets, no water flow despite a running pump motor, or water spurting inconsistently. If your pump runs but delivers little to no water, the impeller blades are likely worn or damaged.
Q: Will this impeller fit my specific RV model?
A: This 340634 impeller is designed for Dometic fresh water pump assemblies. Verify your current pump model matches Dometic's specifications before ordering. Contact our expert support team with your RV make/model and current pump part number for confirmation.
Q: Is this a difficult replacement?
A: Impeller replacement typically requires removing the pump assembly and accessing the pump head. Difficulty varies by RV model and pump location. Many owners handle this as a DIY maintenance task, though professional service is always an option.
Why Elkhart RV Parts
We specialize in hard-to-find Dometic replacement parts for RV owners who need exact OEM components. Shipping directly from Elkhart, Indiana—the RV capital of the world—we stock genuine Dometic parts and provide expert support to help you identify and install the right component for your system.
| Brand | Dometic |
|---|---|
| Product type | Impeller Pump |
| Model number | 48372 |
| Part number | 340634 |
| Size | 3.5" |
| Category | Water Systems |
| Part type | OEM Replacement |
| Compatible applications | Dometic RefrigeratorsWater HeatersCirculation Systems |
| Condition | New |
| Function | Water Flow and System Performance |
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.