Flame Rod, 100074673

The Takagi brand has been discontinued by the manufacturer as of December 31, 2025. Suggested replacement units will be available on our website and replacement parts will continue to be available as supplies last. If you'd like any further assistance, please contact our customer service team.

• Flame rod replacement part
• Identified as a replacement part for Takagi tankless equipment
• SupplyHouse notes Takagi brand units were discontinued by the manufacturer effective December 31, 2025, with parts available as supplies last
• Listed as replacing part numbers 319143-517 and EK193

• Listed for use with the following models:
• T-H3J-OS (NG), T-H3J-OS (LP)
• T-H3M-OS (NG), T-H3M-OS (LP)
• T-H3-OS (NG), T-H3-OS (LP)
• T-H3S-OS (NG), T-H3S-OS (LP)
• T-H3-DV (NG), T-H3-DV (LP)
• T-H3J-DV (NG), T-H3J-DV (LP)
• T-H3M-DV (NG), T-H3M-DV (LP)
• T-H3S-DV (NG), T-H3S-DV (LP)
• TK-540P-NIH (NG), TK-540P-NEH (NG)
• TK-540P-PIH (LP), TK-540P-PEH (LP)
• Must only be used where the manufacturer specifies this exact part number: 100074673

• Installation should be performed by a qualified service technician experienced with gas-fired tankless water heaters.
• Reference the unit's service/installation manual for correct access, placement, wiring/connection checks, and required startup verification after replacement.
• Follow all manufacturer shutdown and safety steps in the manual (gas, water, and electrical isolation) before servicing internal components.

• This part is typically addressed during troubleshooting when the unit has flame-sensing/operation issues and service procedures identify the flame rod as the corrective replacement.
• If problems continue after replacement, follow the unit's troubleshooting guidance to confirm correct installation, connector integrity, and related ignition/flame-sensing components per the service manual.

• Review themes commonly describe it as an exact-match replacement that arrived as expected and restored normal operation.
• A frequent "why I replaced it" theme is resolving shutdown/no-heat behavior during use; one customer reported the unit shut down after several minutes and replacing the flame rod corrected the issue.
• Several reviewers mention keeping one on hand as a backup part for an on-demand water heater.
• A smaller set of feedback notes wear-out over time, with one reviewer describing strong performance for about a year before needing replacement again.