Parts for 55R21HVB — Husqvarna

We found 52 parts confirmed to fit the Husqvarna 55R21HVB.

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 55R21HVB: 532190577 (GBAG.5723237), 186302 (Lawn Mower Grass Bag Assembly), 532188631 (Wheel Assembly), 583708501 (Hex Chute Door), 532190580 (CHUTE.DOOR.21.HV.H-GRAY), 532183908 (Drive Shaft), 532160679 (GEAR, HELICAL), 532160817 (Thrust Washer), 532184134 (Worm Shaft), 188497X498 (Chute.door.2), 532188498 (DOOR.GRASSBAG.H-GRAY), 185996 (Lawn Mower Discharge Deflector Chute), 532750369 (Grease), 188506 (Lawn Mower Grass Bag Frame), 160679 (Lawn Mower Transmission Helical Gear), 532188501 (GUIDE.ROPE.WALK.MOWER), 532751152 (Hex Nut), 532188506 (Lawn Mower Grass Bag Frame), 532190815 (SKIRT.REAR.21.HI-VAC.BLACK), 532175102 (Lawn Mower Drive Gear Retainer, Right), 751068 (Lawn Mower Bearing), 812000039 (KLIP RING), 532057072 (SEAL), 160829 (Lawn & Garden Equipment Shoulder Bolt), 532077881 (BEARING), 532057079 (Washer), 812000058 (Husqvarna E-Ring), 532851074 (Lawn & Garden Equipment Washer), 532850263 (Lawn Mower Washer).

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 55R21HVB: 414291X498 (Lawn Mower Axle Cover, Front), 532184568 (Handle Bolt), 188356X418 (Lawn Mower Drive Cover), 185994 (Lawn Mower Height Adjuster Knob), 532187120 (BEARING.SUPPORT.ASSEM), 194441X004 (Bracket), 185588 (Lawn Mower Handle Knob), 587599801 (Lawn Mower Screw, 13/16-in), 183445 (Lawn Mower Discharge Chute Hinge Rod), 532183445 (Lawn Mower Discharge Chute Hinge Rod), 183446 (Lawn Mower Mulching Door Spring), 181698 (Lawn Mower Screw), 183457 (Lawn Mower Wheel Dust Cover), 532188510 (SHIELD.DEBRIS.21.HV.RWGD.BLACK), 183478 (Lawn Mower Discharge Chute Door Spring), 183483 (Lawn Mower Grass Bag Bracket), 817060410 (Husqvarna Lawn Tractor Screw (Screw.ta)).

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 55R21HVB: 532160672 (Gear Case), 187353 (Lawn Mower Drive Control Pulley), 194128 (Husqvarna Lawn Mower Transmission Pulley), 195326 (Lawn Mower Idler Pulley Kit), 532194128 (Lawn Mower Transmission Pulley), 532166043 (Lawn Mower Idler Pulley).

Before you buy

Match 55R21HVB 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

Check inside a door opening, on a back or side panel, or behind a removable panel or drawer for a label printed with the model and serial number. 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.

Other models with this exact parts list

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

• 917374800 — 30 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.