The Dometic refrigerant flare nut (5/8") is a critical connection component for RV air conditioning systems. This OEM part ensures a secure, leak-free seal between refrigerant lines and AC unit fittings. RV owners maintaining or repairing their Dometic cooling systems need this genuine replacement to restore proper refrigerant flow and system efficiency.
Key Features
- Genuine OEM Dometic part for guaranteed compatibility
- 5/8" flare nut size fits standard Dometic AC refrigerant lines
- Brass construction resists corrosion and maintains seal integrity
- Prevents refrigerant leaks that compromise cooling performance
- Direct replacement—no modifications required
- Meets Dometic engineering specifications
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 290000085 |
| Flare Nut Size | 5/8" |
| Material | Brass |
| Connection Type | Flare Fitting |
| Application | Dometic RV Air Conditioning Units |
| OEM Status | Genuine Dometic Original Equipment Manufacturer Part |
Frequently Asked Questions
Q: How do I know if my flare nut needs replacement?
A: Signs include visible refrigerant oil around connection points, reduced AC cooling capacity, or hissing sounds near AC fittings. These indicate potential leaks at the flare nut connection.
Q: Will this fit my Dometic AC model?
A: This 5/8" flare nut is designed for standard Dometic AC systems. Verify your system uses 5/8" refrigerant line connections before ordering. Contact our support team with your RV model year if you're unsure.
Q: Can I install this myself?
A: Flare nut replacement requires proper tools and refrigerant system knowledge. We recommend having a certified RV technician handle installation to maintain system integrity and warranty compliance.
Why Elkhart RV Parts
We specialize in hard-to-find Dometic replacement parts for RV owners nationwide. Shipping directly from Elkhart, Indiana—the RV capital of the world—we stock genuine OEM components and provide expert support to help you find the exact part your RV needs. Our team understands RV systems and stands behind every part we sell.
| Brand | Dometic |
|---|---|
| Part number | 290000085 |
| Product type | Refrigerant Flare Nut |
| Size | 5/8" |
| Connection type | Flare Fitting |
| Material | Forged |
| Application | RV Air Conditioning Systems |
| Compatible models | Dometic BriskDometic CreeksideDometic Legacy AC ModelsDometic Rooftop AC UnitsDometic Compact AC Units |
| Part category | Service Part |
| Oem status | OEM Replacement |
| Manufacturing origin | USA-Made |
| Key features | Precision-machinedForged constructionLeak-free sealCritical flare fitting connector |
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.