Nti 84738-1 Spark Ignition Electrode with Gasket 3/16 to 1/4 Inches Gap Replacement 6008473801

Product Description

The NTI 84738-1 is an OEM spark ignition electrode designed for use in NTI high-efficiency boiler systems. This igniter replaces part number 6008473801 and is a direct-fit component that restores reliable burner startup performance. HVAC technicians and boiler service professionals rely on this type of ignition electrode to deliver a consistent, repeatable spark that lights the burner on every call for heat. Without a properly functioning ignition electrode, a boiler may experience ignition delays, misfires, nuisance lockouts, or complete failure to fire. Replacing a worn or cracked electrode with a factory-spec component is one of the most common and effective boiler service repairs.

The NTI 84738-1 features a high-temperature ceramic insulator that protects the electrode rod from heat damage and electrical shorts. The ceramic body maintains its integrity under the extreme conditions found inside a boiler combustion chamber. The electrode rod itself is precision-formed to hold a specific spark gap between 3/16 inches and 1/4 inches. This preset gap range ensures the spark discharge has enough energy to ignite the gas-air mixture reliably without excessive wear on the electrode tip. Maintaining the correct spark gap is critical for efficient ignition and long component life.

This replacement kit comes complete with the electrode assembly, a mounting gasket, and the hardware needed for installation. The included gasket seals the electrode port on the burner head, preventing combustion gas leakage around the electrode mounting point. Having all components in a single kit simplifies the service call and reduces the chance of a callback due to a missing part. This electrode is an OEM part engineered to NTI specifications, making it the preferred choice for technicians servicing NTI Trinity, Ti, and similar high-efficiency condensing boiler models.

• OEM ignition electrode engineered to NTI boiler specifications for direct-fit replacement
• High-temperature ceramic insulator resists heat and prevents electrical shorts in the combustion chamber
• Complete kit includes electrode assembly, mounting gasket, and installation screws for a one-stop repair

Product Highlights

The NTI 84738-1 spark ignition electrode delivers factory-spec ignition performance with a preset 3/16 to 1/4 inch spark gap, ceramic insulation, and a complete gasket kit. It is the correct OEM replacement for eliminating ignition failures and burner lockouts in NTI high-efficiency boiler systems.

Product Information

Standard Information

• Brand: NTI
• Manufacturer Part Number: 84738-1

Technical Specifications

• Type: Spark Ignition Electrode
• Spark Gap: 3/16 inches to 1/4 inches
• Insulator Material: High-temperature ceramic
• Includes: Electrode assembly, gasket, screws
• Alternate Part Number: 6008473801