What parts fit the KitchenAid KCMS132SBL4?

Stirrer fan drive belt WP313646, Light bulb WP3395618, Switch 814037.

KitchenAid KCMS132SBL4 microwave parts

Stirrer fan drive belt

Belts stretch and crack with use. Squealing or slipping is the usual sign.

Shop the drive belt on Amazon Other models that use WP313646

Light bulb

Replaces 313969

The light bulb this model takes.

Shop the light bulb on Amazon Other models that use WP3395618

Switch

Replaces 661146

Door, lid and control switches stop a cycle when they fail.

Shop the switch on Amazon Other models that use 814037

1Drive beltWP313646

2Light bulbWP3395618

3Switch814037

Part numbers come from the Sears PartsDirect parts list for the KitchenAid KCMS132SBL4 (view the list), checked November 15, 2026. Amazon buttons open a search for the part number; we may earn a commission.

Where the model number is

Open the door: the label is on the frame. Over-the-range models: sometimes behind the vent grille.

Other KitchenAid microwaves

KCMS125EBL0KHHC2090SWH1KHMC1857WWH0KHMS147HBL0KHMS147HBT0KHMS155LSS4KHMS175MWH0