Reznor 258251 Replacement Kit

When the original RAM 3MC4-06 or Johnson Controls G822KCC-5401D modules fail in your CAUA units, the Reznor 258251 DSI Controller Replacement Kit is the industry-standard field fix for igniter control board issues. This is a comprehensive direct spark ignition conversion kit, transitioning your equipment to the highly reliable UTEC 1097-211 (labeled UTEC ID Code 417). It is specifically engineered for Reznor gas-fired unit heaters and indoor upflow air handlers requiring precise flame monitoring and furnace replacement parts that maintain OEM safety protocols.

The kit eliminates the need for chasing obsolete Reznor parts by including a 9-pin P1 wiring harness, a 5-pin P3 harness, an 18-inch high-tension ignition cable, and a new 24-inch rollout switch wire. Designed for the expert HVAC technician, it features a diagnostic LED indicator to accelerate troubleshooting of combustion cycles or flame sensor lockout errors. Each component integrates seamlessly with existing thermostat terminal strips and limit control circuits to ensure HVAC ignition control reliability in demanding industrial environments.

Key Benefits

• Complete Field Conversion: Transitions legacy DSI controller setups to modern UTEC architecture with all necessary electrical jumpers and mounting templates.
• Enhanced Diagnostics: The integrated LED flash code system identifies specific system faults, reducing diagnostic time for HVAC repair calls.
• OEM Compatibility: A genuine Reznor replacement kit designed to fit the existing footprint by utilizing the provided drill template for high-precision alignment.
• Broad Cross-Reference: Directly replaces obsolete part numbers 193804, 164326, 32678, and WB-23815 for various Reznor heating systems.

Common Questions

Does this kit include the ID plug?
No. You must remove and reuse the ID plug from your original control board. New UTEC boards do not ship with this as standard equipment.

Is this a direct plug-and-verify installation?
While the kit is a direct spark ignition board replacement, you will need to use the included drill template to mark and drill new 3/16-inch mounting holes for the UTEC board, as the footprint differs from legacy RAM or JC controllers.

Can I use my existing ignition cable?
It is recommended to use the new 18-inch ignition cable included in the kit to ensure proper spark gap resistance and insulation integrity with the new transformer.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.