Parts for Thermador PRSE366S: 49 - Jet Holder Assembly Parts

This LP main jet regulates propane flow to a surface burner to maintain a clean, stable flame. Replace a clogged or incorrect jet to restore proper burner performance, especially when converting a cooktop or range from natural gas to LP.

• Meters LP gas to the burner head for correct flame size and combustion
• Direct replacement for a damaged, clogged, or incorrect jet during service or LP conversion
• May help with yellow/sooty flames, weak or overly high flames, uneven heating, or delayed ignition

• Shut off gas and power; allow the appliance to cool completely
• Remove grates, caps, and burner head to access the orifice holder
• Start the jet by hand, then tighten gently with the correct tool—do not overtighten
• After installation or any LP conversion, leak-test connections and verify a steady blue flame; other jets and the regulator may also require LP settings per the model's instructions

The Jet Holder is an OEM part for Bosch ranges. It is responsible for securely housing components that generate flames and distribute heat across the cooktop surface. The jet holder ensures proper airflow and fuel ignition during operation.

Symptoms of a bad jet holder include:

• Unsteady or unstable flames during cooking  
• Flames that cross-ignite between burners
• Inefficient heat transfer causing slow cooking times
• Loose, damaged, or missing jet holder components

Causes of a bad jet holder can include cracks developing from excessive heat cycling or debris buildup restricting gas/airflow. Mineral deposits may also cause fittings to warp and lead to improper alignment. 

This OEM Bosch part is also compatible with Thermador, Gaggenau, and some Kenmore models.
 

Used to hold down the jet holder assembly.

The Venturi Gas Tube is an OEM replacement part for Bosch gas cooktop ranges. Its primary function is to ensure an optimal gas/air mixture for consistent and efficient burner combustion, thereby enhancing the overall performance of the cooktop.

Causes involve normal wear of internal components from continuous heating and cooling cycles. Corrosion damage may also disrupt the venturi tube over time.

Symptoms of a faulty venturi gas tube include:

• Unstable or hard-to-control flame levels
• Potential issues shifting burner flames out of their intended position
• Safety risks including carbon monoxide from improper fuel/air balance

This OEM Bosch part is also compatible with Thermador, Gaggenau and some Kenmore models.