Bosch 00188978 Gas Cooktop Burner Manifold Nut

Gas Cooktop Burner Manifold Nut – Bosch

The Bosch 00188978 cooktop nut secures the burner orifice holder or burner assembly to the gas manifold fitting on compatible Bosch and Thermador gas cooktops. When the nut strips, cracks, or is lost, the burner cannot be properly secured to the manifold and a gas-tight seal cannot be maintained at the burner connection point. This direct-replacement manifold nut restores correct burner retention on compatible Bosch NGP and NGT series gas cooktop models.

Compatible Part Numbers

• 00188978
• 188978
• 411144
• 1021563
• AH3440419
• EA3440419
• PS3440419

Compatible Models (partial)

NGP732UC, NGP735UC, NGP736UC, NGP742UC, NGP745UC, NGP746UC, NGP932UC, NGP935UC, NGP936UC, NGP942UC, NGP945UC, NGP946UC, NGT732UC, NGT735UC, NGT736UC, NGT742UC, NGT745UC, NGT746UC, NGT932UC, NGT935UC, NGT936UC, NGT942UC, NGT945UC, NGT946UC, PDR486GLZS, RDDS30VQB, RDDS30VRS, RDF30QB, RDF30QW, RDF30RS, SGS456ZS and variants

Key Features

• Direct OEM-spec replacement – engineered to Bosch factory specifications for correct thread size and seat profile at the burner manifold fitting
• Secures the burner assembly to the gas manifold – nut retains the orifice holder or burner base at the correct torque point
• Maintains a gas-tight connection – properly torqued nut prevents gas leaks at the manifold fitting
• Direct thread-in installation – threads onto the existing manifold fitting

Fixes These Symptoms

• Burner assembly loose or not securely attached to the gas manifold
• Manifold nut stripped, cracked, or missing from the burner fitting
• Gas leak at the burner manifold connection point
• Burner unable to be reinstalled after a cooktop cleaning or service

Compatible Brands

• Bosch, Thermador

Always verify your model number before ordering. Check the label on your cooktop to confirm compatibility. Gas repairs should be performed by a qualified technician.