Parts for WTW5550ST0 — Whirlpool Washer

We found 35 parts confirmed to fit the Whirlpool Washer WTW5550ST0.

Compatibility table

Prices shown are an informational reference range only, not an offer or an Amazon price — RepairKitHub does not sell parts directly. Each part links to an Amazon search so you can compare current listings yourself.

Common failure areas on this model

The confirmed parts above group into a handful of failure areas. Here is what each points to and how to check it before you order anything.

General hardware and mounting parts

Symptom: A small mechanical or mounting part has failed, cracked, or gone missing.

Check: Compare the physical shape and mounting points to the original piece, and confirm the exact part number against your model plate before ordering.

Parts in this group on WTW5550ST0: W10123170 (Energy Guide), WP8578335 (Washer Water Temperature Switch), 8575076A (Fabric Softener Dispenser), WP387240 (Ring Balance), 285438 (Brake Shoe Assembly), WP89503 (Inlet Hose - 5 FT), WP9724509 (Lid Bumper), 3951311 (Clutch), 62570 (Gear), 63320 (Pinion), 389140 (Washer Drive Block), 350930 (Spray Paint - 12 oz. - White), 72017 (Touch-Up Paint - White).

Controls, timers and wiring

Symptom: A cycle that doesn't advance, the wrong water level filling, an unresponsive display, or the washer not starting at all.

Check: Look for burn marks or a burnt smell near the board or terminals, and check whether buttons and knobs respond -- a unit that powers on but won't cycle often traces back to this group.

Parts in this group on WTW5550ST0: W10034740 (Washer Timer Knob (Bisque)), WP8577356 (Timer - 60 Hz.), W10337781 (Water Level Switch), WP8566022 (Timer Knob - White/Gray), WP8572717 (Washer Capacitor Motor Start).

Heat control (thermostats, fuses, heating element)

Symptom: The appliance runs but heats or cools inconsistently, or shuts off partway through a cycle.

Check: With the appliance unplugged, check continuity across the part with a multimeter -- no continuity means it has failed.

Parts in this group on WTW5550ST0: WP3979346 (Washer Water Inlet Valve And Thermistor Assembly).

Suspension and tub hardware

Symptom: Excessive vibration, banging, or the machine "walking" during the spin cycle.

Check: Check that all leveling legs are actually contacting the floor, then inspect the suspension rods or springs for wear or a broken mount point.

Parts in this group on WTW5550ST0: 285809 (Agitator Cam Kit), WP3951632 (Washer Bottom Agitator), WP64065 (Washer Suspension Spring Bracket), WP3354845 (Agitator Clip), 388952 (Drive Basket).

Storage, trim and cosmetic hardware

Symptom: A cracked shelf, broken door bin, worn hinge, or missing trim piece -- cosmetic and storage wear rather than a functional breakdown.

Check: Match the physical dimensions and mounting tabs of the old part before ordering; these pieces are often model-specific even between visually similar models.

Parts in this group on WTW5550ST0: WP3951608 (Washer Spacer Thrust), WPW10072840 (Washer Inner Cap Seal), WP62780 (Cabinet Retaining Clip), WPW10250667 (Washer Tub Spring), 3349296 (Rack), 21366 (Washer Spanner Nut).

Door, lid switches and latches

Symptom: The washer won't start, or it stops mid-cycle as soon as the lid is opened.

Check: Listen for an audible click when the lid closes. No click, or a visibly cracked plastic tab on the latch, points to this part.

Parts in this group on WTW5550ST0: WP8318084 (Washer Lid Switch), 8318084 (Washer Lid Switch Assembly).

Water inlet and drainage

Symptom: A washer that won't fill, fills slowly, won't drain, or leaves standing water in the tub.

Check: For fill problems, check the inlet valve's screen filters for sediment. For drain problems, check the pump for a jammed object and confirm the drain hose isn't kinked or looped too high.

Parts in this group on WTW5550ST0: WP3363394 (Washer Direct Drive Water Pump).

Drive system (belts, pulleys, motors)

Symptom: A drum or tub that won't turn, a burning-rubber smell, or a loud thump or squeal during a cycle.

Check: With power off, turn the drum or tub by hand -- resistance or grinding points to the motor or a bearing, and a cracked, glazed, or snapped belt is visible once the cabinet is open.

Parts in this group on WTW5550ST0: 3360630 (Gear Case), 62621 (Actuator).

Before you buy

Match WTW5550ST0 exactly against the model and serial plate on the appliance itself before ordering anything — a single mismatched character can point to a different production run with different parts. Then check the part number printed or stamped on the part you are replacing against the part numbers in the table above; the printed number is the most reliable way to confirm fitment when a model has gone through multiple production runs. RepairKitHub does not sell parts directly — every part link above routes to an Amazon search for that part number so you can compare current listings and sellers yourself.

How to confirm this is your model

On most washers, the model and serial plate sits under the lid or on the back panel. Match every character exactly, including letters and dashes at the end — appliance model numbers often have similar prefixes but different suffixes for different production runs.

Neighbouring Whirlpool Washer models

These model numbers sort next to this one in the catalog and are usually the same product family.

• WTW5550XW0 — 46 parts
• WTW5550XW1 — 43 parts
• WTW5550XW2 — 51 parts
• WTW5550XW3 — 50 parts
• WTW5560SQ0 — 34 parts
• WTW5550SQ0 — 190 parts
• WTW5540ST0 — 34 parts
• WTW5540SQ0 — 32 parts
• WTW5530SQ0 — 36 parts
• WTW5521SQ0 — 46 parts

Other models with this exact parts list

Each model below is confirmed to share the identical compatible-parts list with this one.

• GST9630PG2 — 33 parts

Still not sure?

Use the model lookup tool to search by model or part number, or start from the symptom your appliance is showing.