Husqvarna 532180337 Mow Ball – Genuine OEM Replacement Mower Component

Part Number: 532180337
Category: Wheeled Trimmer Cutting Head, Carrier Plate & Mow Ball Components
Type: Mow Ball / Trimmer Cup – Genuine OEM Replacement Mower Component

The Husqvarna 532180337 Mow Ball is a genuine OEM replacement component designed for select Husqvarna wheeled string trimmers and compatible Poulan, Weed Eater, and Craftsman equipment. It is installed beneath the cutting-head/carrier plate area, where it acts as a protective cup and ground-contact component while allowing the trimmer to move smoothly across the cutting surface.

Product Specifications

• Part Number: 532180337
• Manufacturer: Husqvarna
• Product Type: Mow Ball
• OEM Description: Mow Ball
• Alternate Description: Trimmer Cup / Mow Ball Cup
• Component Type: Wheeled Trimmer Cutting Head Component
• Function: Covers the Carrier Plate & Provides a Ground-Contact Surface
• Application: Wheeled String Trimmer / Walk-Behind Trimmer
• Compatible Brand: Husqvarna
• Additional Applications: Select Poulan / Weed Eater / Craftsman Equipment
• Material: Black Plastic
• Component Location: Lower Cutting Head / Carrier Plate Assembly
• Replacement Type: Direct OEM Replacement
• OEM Status: Genuine Husqvarna OEM Part
• Condition: New
• Quantity: 1 Mow Ball
• Part Number Reference: 532180337
• Alternate Number Format: 532 18 03-37
• Previous / Replaced Numbers: 532172523 / 172523 / 180337
• UPC: 705788550067

OEM parts sources identify 532180337 as a genuine Husqvarna Mow Ball, while fitment references confirm that it replaces earlier numbers 532172523, 172523, and 180337.

Features & Benefits

• Genuine Husqvarna OEM replacement component
• Factory-designated Mow Ball
• Also referred to as a Trimmer Cup
• Designed for compatible wheeled string trimmers
• Installs beneath the applicable cutting-head assembly
• Acts as a cover for the carrier plate
• Provides a durable ground-contact surface
• Helps the cutting assembly move smoothly across the ground
• Helps maintain the intended cutting height on compatible equipment
• Protects applicable cutting-head components from direct ground contact
• Durable black plastic construction
• Designed for repeated contact with grass and ground surfaces
• Manufactured to original equipment specifications
• Provides factory-style fit and positioning
• Suitable for high-wheel and walk-behind trimmer repairs
• Ideal replacement for cracked, broken, worn, seized, or damaged mow balls
• Replaces earlier 532172523 / 172523 / 180337
• Direct replacement for equipment requiring 532180337

The mow ball is manufacturer-sourced specifically for wheeled trimmers and functions as a cover for the carrier plate while helping the unit move smoothly during operation.

Documented Applications

The Husqvarna 532180337 Mow Ball is documented for numerous wheeled trimmer applications, including select:

• Husqvarna 625WT
• Husqvarna HU625HWT
• Husqvarna 96173000100
• Husqvarna 96173000203
• Husqvarna 96173000500
• Husqvarna 96173000501
• Poulan PPWT60022
• Poulan PPWT60022X
• Poulan PPWT62522
• Weed Eater WT420
• Weed Eater PWT420A
• Select Craftsman wheeled trimmers
• High-wheel string trimmers
• Walk-behind string trimmers
• Carrier plate / cutting-head assemblies
• OEM applications requiring 532180337

Parts references specifically document the component for the Husqvarna 625WT and HU625HWT families, along with compatible Poulan and Weed Eater high-wheel trimmers.

Mow Ball Function

Unlike a conventional mower wheel, the mow ball is positioned beneath the cutting-head area of compatible wheeled trimmers.

During operation, the 532180337 Mow Ball helps:

• Cover and protect the applicable carrier plate
• Provide a smooth surface at the bottom of the cutting assembly
• Allow the unit to move smoothly over the ground
• Reduce direct contact between internal cutting-head components and the ground
• Help maintain the intended cutting relationship between the trimmer line and ground surface

Another OEM parts reference notes that the mow ball helps prevent compatible trimmers from cutting grass excessively low.

Common Reasons for Replacement

The mow ball experiences significant wear because of its location close to the ground. Replacement may be necessary if the original component exhibits:

• Cracked plastic
• Excessive surface wear
• Broken housing
• Impact damage
• Abrasion damage
• Deformation
• Damage from rocks or other solid objects
• Excessive looseness
• Seized or damaged internal bearing components where applicable
• Inability to move smoothly during operation
• Separation from the cutting-head assembly
• Damage to the mounting area

User repair records also document failures caused by striking rocks and by a frozen bearing that prevented the cup from rotating freely.

Replaces Previous Part Numbers

The Husqvarna 532180337 replaces or cross-references:

• 180337
• 172523
• 532172523
• 532180337

Sears PartsDirect confirms 180337 was replaced by 532180337, while other OEM parts references additionally identify 172523 and 532172523 as previous numbers.

Important Notes

• Verify compatibility with your exact Husqvarna or compatible equipment model, product number, serial number, cutting-head configuration, and production revision before ordering.
• Husqvarna parts sources identify 532180337 as a genuine OEM Mow Ball.
• Other OEM parts catalogs describe the same component as a Trimmer Cup.
• Match part number 532180337 directly with the number shown in your equipment's illustrated parts diagram or OEM documentation.
• The alternate formatted part number may appear as 532 18 03-37.
• Previous numbers include 180337, 172523, and 532172523.
• This component is primarily associated with wheeled/high-wheel string trimmer applications.
• Do not confuse the mow ball with a conventional mower wheel, deck roller, spindle pulley, trimmer head, or carrier plate.
• The mow ball is manufactured from black plastic and is sold individually according to OEM replacement references.
• This listing is for one mow ball unless otherwise specified.
• Mounting hardware should not automatically be assumed to be included.
• PartsTree separately lists 532180334 as the applicable Mow Ball Bolt, indicating the bolt is a separate service component.
• Inspect the existing mounting bolt and related hardware when replacing the mow ball.
• Replace mounting hardware that is stripped, bent, severely corroded, or otherwise damaged.
• Inspect the carrier plate and associated cutting-head components for damage.
• If the original mow ball was damaged by striking a rock, curb, stump, or other solid object, inspect the surrounding assembly for corresponding impact damage.
• If the mow ball no longer moves or rotates as intended, inspect for seized or damaged components before installing the replacement.
• Remove accumulated grass, dirt, string, and other debris from the cutting-head area before installation.
• Install 532180337 in the same factory position and orientation as the original component.
• Make sure the mow ball is securely retained before operating the equipment.
• Verify that the cutting assembly moves freely and does not exhibit abnormal binding or interference.
• Never operate the trimmer with a severely cracked, broken, loose, or improperly installed mow ball.
• Shut off the engine, allow all moving components to stop completely, disconnect the spark plug, and follow the equipment manufacturer's service procedures before working around the cutting head.
• Wear protective gloves when servicing components around the trimmer line and cutting assembly.
• This listing is for one Husqvarna 532180337 Mow Ball only unless otherwise specified. Mow ball bolts, carrier plates, trimmer line, spindle assemblies, cutting-head hardware, and other components are sold separately unless explicitly included.
• Match part number 532180337 with your equipment's illustrated parts diagram or OEM documentation before ordering to ensure proper fitment.