Bosch Refrigerator B21CT80SNB Parts

Removes impurities from your refrigerator's water and ice supply. Replace every 6 months for clean, fresh-tasting water. Verify fit by model number.

Replace a cracked, broken, or missing refrigerator shelf to restore stable storage space. Installs inside your unit for organized food placement.

Replacement door shelf for refrigerator. Mounts inside door panel to hold beverages, condiments, and snacks. Replace if cracked, broken, or missing.

Replace a cracked, broken, or missing refrigerator shelf to restore organized storage space. This shelf provides a sturdy surface for items inside your fridge.

The Fill Safety Valve is an OEM component specifically designed for Bosch refrigerators. It serves an important safety function in maintaining proper water levels inside water dispensers.

The valve regulates water flow based on the fill status. This prevents overfilling and accidental leaking that could damage internal refrigerator components. 

Symptoms of a bad valve can include:

• Unintended dispensing of water even when the reservoir is full  
• Leaking and overflow around the dispenser area
• The inability to fill the water reservoir

Causes may involve normal wear like scale buildup affecting valve closure over time. Impact damage could also impact functionality.

This OEM Bosch replacement part is also compatible with Thermador, Gaggenau, and some Kenmore refrigerator models utilizing comparable water dispensing systems. Replacement ensures safe, reliable operation.
 

Fix incorrect refrigerator temperatures with this temperature sensor. Monitors and maintains proper cooling levels. Easy DIY repair in 30 minutes.

The Heating Element Thermostat is an OEM part for Bosch refrigerators. As a key component for temperature control, the thermostat monitors and regulates power to the pantry and freezer compartment heating elements. Maintaining precise interior conditions preserves foods at their freshest.

Causes of a faulty thermostat can include deterioration or malfunctions in the electronic board or sensor mechanism over extended use.

Symptoms of a bad thermostat include:

• Fluctuating or inaccurate temperature readings inside compartments
• Compartments failing to reach or maintain proper cooling or freezing levels
• Frost or ice buildup inside compartments where none should occur

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

The Defrost Heater is an OEM part for Bosch refrigerators. Strategically placed at the rear of the freezer compartment, it quickly removes frost and ice during automatic defrost cycles. The defrost heater utilizes precisely regulated currents to raise temperatures temporarily and expel moisture.  

Causes of a bad defrost heater may involve failures due to regular heating and cooling over countless cycles. Mineral or ice deposits can restrict filaments or warp sensitive components within.

Symptoms of a bad defrost heater include:

• Frost buildup despite automatic defrost mode being set   
• High energy bills indicating excess run-time to fully defrost
• Warm areas detected behind removable freezer panels
• Risk of frost and condensation dripping onto stored items

Replacing your malfunctioning heater ensures even temperatures throughout. This genuine Bosch part restores frost-free convenience and maintains cooling efficiency. It is compatible with some Thermador, Gaggenau, and Kenmore models.

If your refrigerator is leaking water or the dispenser isn't working, this two-way water valve controls flow between outlets. Restores proper dispensing.

Replacement mounting bolt for bottom-mount refrigerators. Secures internal components and structural parts. Order a new bolt if original is stripped, missing, or damaged during repair work.

This rail is the replacement rack track that supports and guides a dishwasher rack for smooth, stable sliding. Restores proper rack movement and alignment to help loading and unloading dishes run more easily. What it does:

• Provides a guided track for the dishwasher rack to roll in and out smoothly
• Replaces worn, bent, or damaged rails that cause sticking, wobbling, or misalignment
• Helps prevent rack derailment or noisy operation when opening or closing the rack
• Fits into the rack support locations to maintain proper rack travel and load support

• One rail

• Disconnect power and shut off water to the appliance before beginning any repair
• Remove the affected rack and any end caps or retainers to access the rail mounting points
• Inspect mounting clips and rollers for wear and replace if needed for proper fit

This replacement rail restores smooth movement and stable support for a dishwasher rack. It helps the rack slide in and out reliably and prevents sagging or binding for easier loading and unloading. What it does:

• Supports and guides a dishwasher rack along its slide path for consistent movement
• Replaces worn or damaged rack track that causes sticking, jerking, or uneven travel
• Helps prevent rack sagging or misalignment that can lead to poor door closure or obstruction
• Restores the rack's smooth operation for safe loading and unloading

• One replacement rail

• Disconnect power and turn off water supply to the appliance before servicing
• Basic hand tools are typically required; your model's service instructions for details
• Keep small fasteners and clips organized during removal and reassembly

This rack rail is a replacement slide that supports and guides a dishwasher rack so it rolls smoothly in and out. It restores proper rack movement and helps prevent the rack from sagging or coming off the track. What it does:

• Provides a smooth sliding surface for the dishwasher rack to roll on
• Keeps the rack aligned and prevents it from tipping or falling
• Reduces grinding or noisy movement caused by a worn or broken rail
• Helps restore normal loading and unloading of dishes when the rack won't glide

• Disconnect power to the dishwasher before servicing; turn off water supply if needed
• Remove the affected rack and any retainers or clips to access the rail
• Replace the damaged rail and reassemble clips/rack in the original orientation

This defrost heater melts frost and ice buildup on the evaporator to help restore normal airflow and consistent cooling performance. Replaces the evaporator heating element used in frost-control cycles. What it does:

• Warms the evaporator coil during defrost cycles to remove accumulated ice.
• Helps restore proper airflow when frost or ice is blocking the evaporator fins.
• Commonly used when you see heavy frost buildup, ice on the evaporator, or reduced cooling performance.
• Works with the refrigerator's defrost control/thermostat to prevent over-freezing.

• One defrost heater assembly (1 pc)

• Disconnect power to the appliance before starting any repair.
• Access typically requires removing the evaporator cover; handle panels and edges carefully.
• Replace only with the exact part number; avoid routing or pinching wires during reassembly.

Freezer not cooling or frosting over? This evaporator coil circulates refrigerant to remove heat and restore proper temperatures in your refrigerator.

Fix unresponsive buttons or controls that don't activate. This push-button switch restores electrical flow for specific functions. Simple swap repair.