Maxon 23739 Spark Plug

The Maxon 23739 Spark Plug is a mission-critical industrial burner igniter engineered for high-performance combustion systems. Featuring a 14mm thread diameter (M14 x 1.25) and a distinct 1.5-inch extended gap, this component is purpose-built to deliver consistent high-voltage arcs in demanding environments. Designed for compatibility with Maxon APX burners and NP-LE AIRFLO systems, this self-grounding igniter ensures reliable light-off in direct spark configurations, even under variable fuel-air mixtures and high-velocity process air.

For HVACR contractors and industrial technicians, the Maxon 23739 serves as a direct replacement for the Auburn I-31-1 and Eclipse 16927, providing a ruggedized solution for commercial heating systems and process ovens. Its ceramic insulator and nickel alloy electrode construction are optimized for thermal conductivity and resistance to fouling, minimizing ignition failure and reducing routine maintenance cycles. When timing and precision are non-negotiable for system startup, this 14mm spark igniter provides the professional-grade durability required for continuous industrial duty.

Key Benefits

• Direct Burner Compatibility: Specifically engineered for Maxon APX and NP AIRFLO burner series to ensure seamless mechanical fit and electrical performance.
• Optimized Ignition Reach: The 1.5" extended gap allows the spark to clear the burner plate and reach the optimal fuel-air mixing zone for faster, more dependable light-offs.
• Standardized Threading: The M14 x 1.25 thread size simplifies installation into existing 14mm ports without the need for adapters or specialized tooling.
• Self-Grounding Design: Features a rugged self-grounding configuration that eliminates the need for separate ground wiring, simplifying the burner head assembly.
• High-Temperature Durability: Constructed with industrial-grade materials to withstand the extreme thermal cycling common in industrial combustion and HVAC heating modules.

Common Questions

Is the Maxon 23739 compatible with Eclipse burners?
Yes, the 23739 is a functional equivalent to several industry-standard igniters, including the Eclipse 16927 and Auburn I-31-1. It is frequently used in Eclipse AH burners and similar direct-spark applications.

What is the primary advantage of the 1.5-inch extended gap?
The 1.5-inch extension is critical for burners where the spark must be positioned further into the combustion chamber to ensure the arc makes contact with the richest part of the gas stream, improving cold-start reliability.

Can this igniter be used as a flame rod?
While the Maxon 23739 is primarily designed as a spark plug igniter, it is part of a broader series of Maxon flame rods and igniters used in flame rectification circuits. Always verify your controller's requirements before using an igniter for flame sensing.

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.