Fuel Orifice Kit | Jandy | R0591604 | Brass Gas | For JXi 400

The Jandy JXi 400 Pool Heater Fuel Orifice Kit (R0591604) is the exact OEM replacement for your JXi 400 gas pool heater, delivering precise gas flow for safe, efficient combustion. This kit ensures the correct flame characteristics, helping your heater reach and maintain target temperatures without over-firing or under-heating.

Designed for both DIY enthusiasts and licensed technicians, it restores optimal performance in real-world scenarios such as seasonal start-ups, after parts wear, or post-maintenance troubleshooting. By replacing the fuel orifice, you support energy-efficient operation and prolonged heater life, reducing fuel waste and heat-loss during cold starts.

• OEM part for Jandy JXi 400 series pool heaters
• Precise orifice sizing to restore consistent BTU output
• Improved flame stability and safer ignition
• Easy installation with existing gas connections
• R0591604 part number guarantees correct fit

Ideal for pool owners upgrading aging pool heater parts, service pros performing routine maintenance, or anyone seeking reliable, economical heating for mid-season swims. This fuel orifice kit is a practical alternative to generic replacements, offering a manufacturer-grade fit that matches the engineered tolerances of your heater.

Keep your pool warm and efficient—add this OEM fuel orifice kit to your cart to ensure consistent performance when you need it most.