Universal/Multiflex (Frigidaire)
Dishwasher

Model # MDB421RFR2 Official Universal/Multiflex (Frigidaire) dishwasher

Here are the diagrams and repair parts for Official Universal/Multiflex (Frigidaire) MDB421RFR2 dishwasher, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 138 parts  |

Gasket 154211801
#3

Tub diagram

Gasket

Part #154211801

Replaced by #154827601

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Manufacturer substitution
This part replaces 154211801. Substitute parts can look different from the original.
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Lo Spray Arm 154250901
#24A

Motor & pump diagram

Lo spray arm

Part #154250901

Replaced by #5304517203

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Manufacturer substitution
This part replaces 154250901. Substitute parts can look different from the original.
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Gasket 154297601
#49

Door diagram

Gasket

Part #154297601

Replaced by #809006501

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Manufacturer substitution
This part replaces 154297601. Substitute parts can look different from the original.
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Dishwasher Lower Spray Arm Support 154294101
#62

Motor & pump diagram

Dishwasher lower spray arm support

Part #154294101

Replaced by #5304518968

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Manufacturer substitution
This part replaces 154294101. Substitute parts can look different from the original.
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$15.09
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Dishwasher Pump O-ring, Front 154247001
#59

Motor & pump diagram

Dishwasher pump o-ring, front

Part #154247001

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Water Valve 154219601
#3

Frame diagram

Water valve

Part #154219601

Replaced by #154637401

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Manufacturer substitution
This part replaces 154219601. Substitute parts can look different from the original.
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9% OFF Phone Price : $66.54
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Dishwasher Wheel 154174501
#7

Racks diagram

Dishwasher wheel

Part #154174501

Replaced by #5304532229

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Manufacturer substitution
This part replaces 154174501. Substitute parts can look different from the original.
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Dishwasher Filter 154252301
#64

Motor & pump diagram

Dishwasher filter

Part #154252301

Replaced by #5304506533

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Manufacturer substitution
This part replaces 154252301. Substitute parts can look different from the original.
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Base 154252201
#63

Motor & pump diagram

Base

Part #154252201

Replaced by #5304506533

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Manufacturer substitution
This part replaces 154252201. Substitute parts can look different from the original.
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Heating Element Nut 154106201
#1B

Motor & pump diagram

Heating element nut

Part #154106201

Replaced by #154106202

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Manufacturer substitution
This part replaces 154106201. Substitute parts can look different from the original.
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$7.99
11% OFF Phone Price : $8.99
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Most common symptoms to help you fix your dishwashers

Choose a symptom to see related dishwasher repairs.

Main causes: broken door spring, damaged or broken door hinge…

Main causes: not using rinse aid, rinse aid dispenser failure, broken heating element, malfunctioning vent, drying fan f…

Main causes: water supply problem, stuck overfill float, clogged water inlet valve screen, water inlet valve failure…

Main causes: light switch beside the sink turned off, lack of power, bad dishwasher door switch, control system failure,…

Main causes: improper loading, low water temperature, improper detergent dosage, detergent dispenser failure, spray arm …

Main causes: glass or popcorn kernel stuck in the chopper blade, drain line vibrating against the cabinet, debris in was…

Main causes: clogged kitchen sink drain, clogged drain hose, drain check valve damaged, drain pump failure, control syst…

Main cause: damaged rack height adjuster…

Main causes: damaged or stuck spray arm, leaking door seal, damaged door hinge, leaky heating element water seal, cracke…

Most common repair guides to help fix your dishwashers

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

How to replace a dishwasher water inlet valve

How to replace a dishwasher water inlet valve

If your dishwasher fills constantly or won't fill at all, the water inlet valve has failed. You can replace it in about …

Repair difficulty
Time required
 30 minutes or less
How to replace a dishwasher detergent dispenser

How to replace a dishwasher detergent dispenser

Dishes need dish detergent to get clean. Learn how to replace a dishwasher detergent dispenser with easy step-by-step i…

Repair difficulty
Time required
 30 minutes or less
How to replace a dishwasher door outer panel

How to replace a dishwasher door outer panel

If your dishwasher door is dented or you want it to match your cabinets or other appliances, this guide shows how to rep…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your dishwashers

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

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How to clean and maintain your dishwasher

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