Parts for Thermador CGB48RSBU: 18 - Outer Burner Box Parts

This 48-inch gas supply tube routes fuel from the appliance inlet to the internal gas valve, providing a direct replacement for damaged, corroded or bent factory tubing. Restores safe gas flow when the original tube is compromised. What it does:

• Directs gas from the inlet to the appliance gas valve for ignition and burner operation.
• Replaces tubing that is cracked, bent, corroded or otherwise leaking.
• Addresses symptoms like a persistent gas odor near the appliance, burners that won't light, or visible damage to the original tube.
• Provides the correct length and routing to match the appliance's original configuration.

• Turn off the gas supply and electrical power to the appliance before beginning work.
• After installation, test all connections for leaks with a soap-and-water solution or a calibrated gas leak tester; do not use an open flame.
• Do not modify or shorten the tube; use the correct routed length and fittings for a proper seal.

This replacement gas orifice (#54 drill) meters fuel to a burner for correct flame size and heat output. It restores proper burner performance when the jet is clogged, worn or the flame is weak or uneven. What it does:

• Precisely meters gas flow to a burner to maintain correct flame characteristics
• Helps correct weak, flickering, low or uneven flames
• Useful when a burner has restricted flow from debris or corrosion
• Compatible with applications that use a #54 drill-sized jet

• Turn off the gas supply and electrical power before servicing; follow local codes
• Use appropriate tools to remove the old orifice; avoid overtightening the replacement
• Check all connections for leaks with a gas leak detector or soapy water before use

The Spark Ignition Switch is an OEM part for Bosch ranges and cooktops. It controls the ignition of surface burner flames by emitting an electrical spark when activated.

Causes of a bad switch can be general wear and fatigue over thousands of start cycles. Exposure to moisture, dust or metal debris could also damage electrical components internally.

Symptoms of a bad spark ignition switch include:

• Burners failing to light even when valves are turned on
• Intermittent or irregular lighting of some burners
• No electrical sparks emitted from the ignition electrode

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

A 9-inch gas supply tube that routes fuel from the appliance inlet to the control valve/manifold, restoring proper gas delivery for safe, consistent burner operation when tubing is damaged or leaking. What it does:

• Channels gas to the control valve/manifold so burners can ignite and maintain a steady flame.
• Replaces bent, punctured, corroded, or leaking tubing that can interrupt fuel flow.
• Helps address common symptoms such as a gas odor near the appliance, burners that won't light, or low/uneven flames.
• OEM-style replacement designed for the corresponding Bosch gas appliance configurations.

• Shut off the gas supply and electrical power to the appliance before starting any work.
• Use correct fittings and approved thread sealant or gasketing; tighten to OEM-recommended torque if specified.
• After installation, perform a soap-and-water or approved leak test; if you detect a leak, shut off gas.

This gas pressure regulator controls and stabilizes incoming supply pressure to the appliance manifold, helping ensure consistent burner flames and reliable ignition. Replace if the original regulator is sticking or no longer maintaining correct pressure.

• Regulates incoming gas to the appliance's rated manifold pressure
• Helps maintain even flame height and proper combustion
• Supports reliable burner ignition and reduces flame-out from pressure swings
• Common symptoms include weak or uneven flames, yellow tipping, burners not lighting or not staying lit, or flames that are too high

• Disconnect electrical power and shut off the gas supply before servicing
• Observe the flow-direction arrow; install with outlet toward the appliance manifold
• Use approved gas-rated thread sealant on male threads only and leak-test all joints with a non-corrosive solution after installation

The Burner Head and Cap Assembly is an OEM part for Bosch ranges and cooktops. It contains the burner itself along with its protective cover.

Cracks or misshapen portions disrupt flame stability leading to inconsistent results.

Symptoms of a failed assembly include:

• Irregular or overly high flames from damage exposing gas jets
• Difficulty igniting or flames extinguishing prematurely
• Singed pans lacking the protection of an intact cap

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

The Burner Head and Cap Assembly is an OEM part for Bosch ranges and cooktops. It contains the burner itself along with its protective cover.

Cracks or misshapen portions disrupt flame stability leading to inconsistent results.

Symptoms of a failed assembly include:

• Irregular or overly high flames from damage exposing gas jets
• Difficulty igniting or flames extinguishing prematurely
• Singed pans lacking the protection of an intact cap

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

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.

This is a cooktop burner igniter OEM replacement part for Bosch cooktops and ranges and is sold as an individual part. This part creates a spark that ignites the burner within your cooktop or stovetop and is made of a combination of metal and ceramic.

Causes of a bad ignition plug can include issues with the electronic module, worn electrodes that no longer spark reliably, or damaged wiring.

Symptoms of a bad ignition plug include:

• Gas burners that will not light or remain lit
• Delayed ignition of one or more burners
• Intermittent or no sparking from the ignition plug

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

The Igniter Mounting Clip is an OEM part for Bosch ranges. It secures the igniter to the range top, ensuring it is properly aligned and stable for optimal ignition performance. The surface igniter is crucial for the ignition of gas burners, facilitating an immediate and safe flame to cook with.

Over time, the Igniter Mounting Clip can succumb to various forms of wear and tear, including corrosion from exposure to moisture, degradation from frequent heating cycles, or physical damage during cleaning or maintenance activities. 

Symptoms of a compromised Igniter Mounting Clip include:

• The surface igniter becoming loose or dislodged
• Difficulty in igniting the burner or uneven flames
• Noisy or irregular ignition sounds
• Visible signs of damage or corrosion on the clip

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

Used to hold down the jet holder assembly.

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.
 

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

This 1/4-inch gas supply tube routes fuel between internal components of the appliance, such as the regulator/manifold and valve or burner assembly. Replacing a damaged line helps restore safe, consistent gas flow and dependable burner operation.

• Carries gas from the regulator/manifold to downstream valve/burner components
• Direct replacement for a kinked, cracked, or corroded tube
• Maintains proper routing and secure, sealed connections inside the unit

• Shut off gas and power; allow the unit to cool and ventilate the area before service
• Support fittings with two wrenches; avoid over-torquing and do not kink the tube
• After installation, check all joints with an approved leak-detection solution—never an open flame

This 1/4-inch gas supply tube routes fuel between internal gas components to deliver a stable, leak-resistant supply to the burner. Replacing a damaged tube helps restore safe operation and consistent burner performance.

• Carries gas between internal components (such as the valve/manifold and burner)
• Maintains a sealed pathway to prevent leaks
• Helps ensure proper ignition and flame size
• Common signs of failure: visible kinks, cracks, or corrosion; weak/no flame; gas odor near the tube

• Shut off gas supply and power before servicing; work in a well-ventilated area
• Match original routing and orientations; avoid kinks and sharp bends
• Tighten fittings to manufacturer guidance; do not overtighten
• Leak-test all joints with approved leak-detection solution and verify burner operation

The Grate Foot Kit is an OEM part for Bosch ranges. This kit includes the small rubber feet that attach to the bottom of the range grates, providing stability and preventing the grates from scratching the range surface.

Over time, the grate feet can wear out or become damaged due to exposure to high temperatures, regular cleaning, or accidental impact. Missing or worn-out feet can cause the grates to sit unevenly or scratch the range surface.

Symptoms of a bad grate foot kit include:

• The range grates sitting unevenly or wobbling
• Scratches or damage on the range surface
• Grates sliding or shifting during cooking
• Missing or visibly worn-out rubber feet

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