Takagi 100074230 Manifold Gasket B Tankless Water Heater

Product Description

The TAKAGI 100074230 is a manifold gasket (Type B) designed as a direct replacement component for Takagi tankless water heater units. Gaskets of this type create a sealed interface at the gas or water manifold assembly, preventing leaks and maintaining system integrity under normal operating pressures and temperatures. This part is installed by licensed plumbers or qualified water heater technicians performing routine maintenance or component-level repairs on Takagi tankless units. Proper sealing at the manifold is critical to safe operation, and a compromised gasket should be replaced promptly to avoid gas or water leakage.

This gasket is a service replacement part suited for residential and light commercial Takagi tankless water heater installations, including both natural gas (NG) and liquid propane (LP) configurations. It is used across a wide range of Takagi model families covering indoor, outdoor, direct vent, and open combustion configurations. Refer to the compatibility list below for the full set of supported models.

Key Features

• OEM replacement manifold gasket (Type B) for Takagi tankless water heaters
• Compatible with both natural gas and liquid propane unit variants
• Supports indoor, outdoor, direct vent, and open combustion model configurations
• Designed for component-level repair and maintenance service calls
• Restores proper manifold sealing to maintain safe operating conditions

Compatibility

Compatible with the following Takagi models: T-K3-PRO (LP), T-K3-OS (LP), T-H2S-OS (NG), T-H3J-OS (LP), T-H3J-DV (NG), T-H3-OS (LP), T-K3 (NG), T-H3-OS (NG), T-K4U-IN (NG), T-M50-ASME (LP), T-K3 (LP), T-H3S-DV (NG), T-KJR2-OS (LP), T-H2S-DV (LP), T-H3S-OS (LP), T-H3S-OS (NG), T-K4-OS (LP), T-H2-DV (NG), T-H2-DV (LP), T-D2U-OS (NG), T-H3M-OS (LP), T-D2-IN (NG), T-K3-PRO (NG), TK-540P-NEH (NG), T-D2-OS (NG), T-H2S-DV (NG), T-K3-OS (NG), T-M50 (NG), T-K4-IN (LP), T-H3M-OS (NG), T-H3-DV (NG), T-H3S-DV (LP), T-KJR2U-OS (NG), T-D2U-IN (NG), TK-540P-PIH (LP), T-KJR2-OS (NG), T-H2-OS (LP), T-K4-IN (NG), T-H2-OS (NG), T-K4U-OS (NG), T-H3-DV (LP), T-KJR2-IN (NG), T-K3-SP (NG), T-H3J-OS (NG), T-KJR2U-IN (NG), T-KJR2-IN (LP), T-M50 (LP), T-D2-IN (LP), T-H3M-DV (NG), T-H2S-OS (LP), TK-540P-PEH (LP), TK-540P-NIH (NG), T-H3J-DV (LP), T-H3M-DV (LP), T-M50-ASME (NG), T-K4-OS (NG), T-K3-SP (LP), T-D2-OS (LP).

Installation Notes

Installation should be performed by a licensed plumber or qualified service technician familiar with tankless water heater systems. Shut off the gas supply and cold water inlet and allow the unit to cool completely before disassembling any manifold components. Inspect mating surfaces for debris or damage before seating the new gasket. Follow the manufacturer service documentation and applicable local plumbing codes when reassembling manifold connections.

Technical Specifications

• Product Type: Manifold Gasket, Type B
• Application: Replacement Part
• Fuel Type Compatibility: Natural Gas (NG) and Liquid Propane (LP)

Standard Information

• Brand: TAKAGI
• Manufacturer Part Number: 100074230