Whirlpool
Countertop Microwave

Model #MT4155SPT4 Official Whirlpool 1.5 cubic foot microwave

Here are the diagrams and repair parts for Whirlpool MT4155SPT4 1.5 cubic foot microwave, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

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

Installation guideOwner’s manual

    Showing 10 of 83 parts

    Microwave Door Release Lever#3

    Control panel parts Diagram

    Latch bracket

    Part #W10298900
    Replaced by #WP8205451
    ?
    Manufacturer substitution
    This part replaces W10298900. Substitute parts can look different from the original.
    In Stock
    $35.19 | 
    12% OFF 
    Phone Price: $40.19
    Microwave Glass Turntable Tray#6

    Oven cavity parts Diagram

    Cook tray

    Part #W10143945
    Replaced by #WP8172138
    ?
    Manufacturer substitution
    This part replaces W10143945. Substitute parts can look different from the original.
    In Stock
    $57.59 | 
    8% OFF 
    Phone Price: $62.59
    Microwave High-Voltage Capacitor#4

    Oven interior parts Diagram

    Microwave high-voltage capacitor

    Part #8184813
    Replaced by #WP8184813
    ?
    Manufacturer substitution
    This part replaces 8184813. Substitute parts can look different from the original.
    In Stock
    $85.39 | 
    6% OFF 
    Phone Price: $90.39
    Microwave Screw#13

    Oven cavity parts Diagram

    Screw

    Part #8171862
    Replaced by #8169474
    ?
    Manufacturer substitution
    This part replaces 8171862. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $5.24
    Screw#17

    Oven interior parts Diagram

    Screw

    Part #8204902
    This item is not returnable
    In Stock
    $8.89 | 
    10% OFF 
    Phone Price: $9.89
    Power Cord#9

    Oven interior parts Diagram

    Power cord

    Part #8206281
    In Stock
    $46.16
    Microwave Door Release Button (White)#1A

    Control panel parts Diagram

    In Stock
    $20.59 | 
    20% OFF 
    Phone Price: $25.59
    Microwave Turntable Motor Coupler#7

    Oven cavity parts Diagram

    Microwave turntable motor coupler

    Part #W10143947
    Replaced by #WPW10143947
    ?
    Manufacturer substitution
    This part replaces W10143947. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $13.09 | 
    13% OFF 
    Phone Price: $15.09
    Wire Harness#6

    Oven interior parts Diagram

    Wire harness

    Part #W10169276
    Replaced by #8206282
    ?
    Manufacturer substitution
    This part replaces W10169276. Substitute parts can look different from the original.
    In Stock
    $75.20
    Microwave Door Primary Interlock Switch#3

    Latch board parts Diagram

    Switch

    Part #8183561
    Replaced by #4392027
    ?
    Manufacturer substitution
    This part replaces 8183561. Substitute parts can look different from the original.
    In Stock
    $69.11 | 
    20% OFF 
    Was: $86.39

    Articles and videos common to all microwaves

    November 12, 2022

    5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

    By Lyle Weischwill

    Get tips on completing essential holiday cleaning tasks to brighten your home.

    August 19, 2022

    Are DIY appliance repairs safe?

    By Lyle Weischwill

    Find out how to stay safe when repairing your appliances.

    August 5, 2022

    Introducing new technical repair content that we’re developing for the Sears Technical Institute

    By Lyle Weischwill

    Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.