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Bosch
Side-By-Side Refrigerator

Model # B20CS51SNS/02 Official Bosch refrigerator

Here are the diagrams and repair parts for Official Bosch B20CS51SNS-02 refrigerator, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Error Codes

Model diagram and schematic

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Showing 10 of 139 parts  |
Refrigerator Filter 601057
#527

Fan/drawer diagram

Refrigerator filter

Part #601057

Replaced by #00601057

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Manufacturer substitution
This part replaces 601057. Substitute parts can look different from the original.
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Refrigerator Ice Maker 497878
#422

Evaporator/icemaker diagram

Refrigerator ice maker

Part #497878

Replaced by #00649288

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Manufacturer substitution
This part replaces 497878. Substitute parts can look different from the original.
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$204.66 | 
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Refrigerator Frame 497877
#421

Evaporator/icemaker diagram

Refrigerator frame

Part #497877

Replaced by #00649288

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Manufacturer substitution
This part replaces 497877. Substitute parts can look different from the original.
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$204.66 | 
6% OFF Phone Price : $216.66
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Refrigerator Water Valve 640574
#610

Compressor/condenser diagram

Refrigerator water valve

Part #640574

Replaced by #00640574

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Manufacturer substitution
This part replaces 640574. Substitute parts can look different from the original.
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$181.21 | 
6% OFF Phone Price : $193.21
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Refrigerator Drawer Slide Rail 445997
Refrigerator drawer slide rail

Part #445997

Replaced by #00445997

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Manufacturer substitution
This part replaces 445997. Substitute parts can look different from the original.
$18.06
In Stock
Refrigerator Water Filter 640565
#127

Cabinet diagram

Refrigerator water filter

Part #640565

Replaced by #00640565

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Manufacturer substitution
This part replaces 640565. Substitute parts can look different from the original.

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$97.98
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Refrigerator Freezer Drawer Slide Rail 445987
Refrigerator freezer drawer slide rail

Part #445987

Replaced by #00445987

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Manufacturer substitution
This part replaces 445987. Substitute parts can look different from the original.
$23.49
In Stock
Refrigerator Ice And Water Dispenser Button 601306
#218

Freezer door diagram

Refrigerator ice and water dispenser button

Part #601306

Replaced by #00601306

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Manufacturer substitution
This part replaces 601306. Substitute parts can look different from the original.
$32.39 | 
16% OFF Phone Price : $38.39
In Stock
Refrigerator Dairy Bin 446134
#301

Refrigerator door diagram

Refrigerator dairy bin

Part #446134

Replaced by #00446134

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Manufacturer substitution
This part replaces 446134. Substitute parts can look different from the original.
$70.69 | 
8% OFF Phone Price : $76.69
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Refrigerator Freezer Evaporator Sensor 601059
#403

Evaporator/icemaker diagram

Refrigerator freezer evaporator sensor

Part #601059

Replaced by #00601059

?
Manufacturer substitution
This part replaces 601059. Substitute parts can look different from the original.
$32.67
In Stock

Most common symptoms to help you fix your refrigerators

Choose a symptom to see related refrigerator repairs.

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Why is frost building up in my refrigerator's freezer?

Main causes: damaged door seal, faulty defrost sensor or bi-metal thermostat, broken defrost heater, bad defrost timer o…

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Why won't my refrigerator run?

Main causes: control board or cold control failure, broken compressor start relay, compressor motor failure, defrost tim…

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Why isn't my refrigerator cooling well?

Main causes: blocked vents, defrost system problems, evaporator fan failure, dirty condenser coils, bad sensors, condens…

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Why is my freezer not cold enough?

Main causes: leaky door gasket, defrost system failure, evaporator fan not running, dirty condenser coils, condenser fan…

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Why won't my refrigerator ice maker make ice?

Main causes: jammed ice cubes, broken ice maker assembly, dirty water filter, kinked water line, bad water valve, freeze…

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Why won't my refrigerator cool at all?

Main causes: blocked air vents, compressor problems, condenser or evaporator fan not working, control system failure, se…

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Why is water dripping from my refrigerator onto the floor?

Main causes: water valve leaking, frozen or broken defrost drain tube, overflowing drain pan, cracked water system tubin…

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What routine maintenance does my refrigerator need?

Things to do: clean condenser coils, replace the water filter, clean the interior, adjust doors to prevent air leaks, cl…

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Most common repair guides to help fix your refrigerators

These step-by-step repair guides will help you safely fix what’s broken on your refrigerator.

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How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

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Repair difficulty
Time required
 15 minutes or less
How to replace a refrigerator temperature control board

How to replace a refrigerator temperature control board

If the temperature in your refrigerator doesn't match the temperature you set, the problem could be the temperature cont…

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Repair difficulty
Time required
 30 minutes or less
How to clean refrigerator condenser coils

How to clean refrigerator condenser coils

Help your refrigerator run more efficiently by cleaning the condenser coils. It's easy and takes just a few minutes.…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your refrigerators

Use the advice and tips in these articles and videos to get the most out of your refrigerator.

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How to Replace the Water Filter in a Maytag Refrigerator

How to Replace the Water Filter in a Maytag Refrigerator

No matter what style Maytag refrigerator you have, we can walk you through replacing the water filter.…

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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How to prevent water dispenser and ice maker problems

How to prevent water dispenser and ice maker problems

If your refrigerator's ice maker isn't producing as much ice as it should, or water is flowing poorly from the dispenser…

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