The Dometic 3.5" impeller pump (Part# 330349) is essential for RV water systems that require reliable circulation and pressure. This 1/3 horsepower pump is designed for fresh water delivery in travel trailers, motorhomes, and fifth wheels. If your RV's water pressure is weak or the pump won't prime, this OEM replacement restores full system functionality.
Key Features
- 3.5" diameter impeller for consistent water flow and pressure
- 1/3 horsepower motor rated for continuous duty cycle
- Self-priming design eliminates air lock problems
- Durable sealed construction resists corrosion in wet environments
- Direct replacement for original Dometic systems
- Operates on standard 12V or 110V RV electrical systems
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 330349 |
| Impeller Size | 3.5 inches |
| Motor Horsepower | 1/3 HP |
| Pump Type | Self-Priming Centrifugal |
| Material | Corrosion-Resistant Composite |
| Voltage Options | 12V DC and 110V AC Compatible |
Frequently Asked Questions
- How do I know if my pump needs replacement?
- Signs include weak water pressure, pump won't turn on, unusual noise or vibration, or water leaking from the motor housing. If your RV has low water pressure throughout the system, the impeller pump is often the culprit.
- Is this pump a direct OEM replacement?
- Yes, Part# 330349 is a genuine Dometic original equipment manufacturer part. It matches the specifications of the pump currently in your RV water system and installs without modifications.
- Can this pump handle both fresh water and grey water systems?
- This pump is designed for fresh water delivery only. Using it for grey or black water systems will damage the impeller and void the warranty. Install appropriate waste water pumps for those applications.
Why Buy from 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 ensure you get the right replacement. Our team understands RV systems and can answer technical questions about installation and compatibility.
| Brand | Dometic |
|---|---|
| Product_type | Impeller Pump |
| Part_number | 330349 |
| Diameter | 3.5 inches |
| Electrical_configuration | 1/3 Phase |
| Single_phase_compatible | true |
| Three_phase_compatible | true |
| Application | Water Systems |
| Compatible_systems | Water heater and circulation systems |
| Part_category | OEM Replacement |
| Function | Water flow and pressure restoration |
| Condition | New |
| Product_type_category | Service Parts |
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.