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543RBK (2018-06) Husqvarna Brush Cutter - Overview

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Nut Blade – Part Number: 502291101
$12.05
On Order
Nut Blade
Part #502291101
This 25mm blade nut is a fastener that secures the blade to the spindle or shaft of your lawn equipment. It is located at the center of the blade. Signs of a broken blade nut include looseness, stripping, cracks, or excessive wear. Failing to replace a broken blade nut can result in a loose or dislodged blade during operation. To unthread the blade nut on your machine, use a wrench or socket to loosen it. This OEM component is sold individually. To ensure you have the correct number of blade nuts for your machine, refer to the user guide as your equipment may require multiple blade nuts. Consider replacing all of the nuts in one go as they wear out at similar rates.
Bevel Gear Grease – Part Number: 503976401
$20.85
On Order
Bevel Gear Grease
Part #503976401
This manufacturer-grade bevel gear grease is used to grease transmissions, bevel gears and other gear case assemblies.
Trimmer Nut – Part Number: 731231401
$6.72
In Stock
Trimmer Nut
Part #731231401
This is a genuine manufacturer-sourced replacement part which is specially designed for use with Husqvarna lawn and garden equipment. It is an identical replacement for a missing or damaged hexagon nut that was installed on a new unit. This is a standard hardware which has multiple applications, please make sure to refer to the appropriate diagrams of your model for the correct location and application of this component. Keep in mind this high-quality nut is made of durable metal and is sold individually.
Bolt – Part Number: 506745201
$6.95
Special Order
Bolt
Part #506745201
Support Flange – Part Number: 537343502
$32.95
In Stock
Support Flange
Part #537343502
Trimmer Plug – Part Number: 503201501
$7.65
In Stock
Trimmer Plug
Part #503201501
This threaded plug bolt is a precision-designed component used to securely seal lubrication ports in gear housing assemblies on outdoor power equipment. Engineered with durable, corrosion-resistant material, it helps retain essential grease while preventing dirt, moisture, and debris from entering sensitive internal components. Its threaded design ensures a tight, vibration-resistant fit, supporting long-lasting performance and proper gear protection. Ideal for maintenance or repair, it helps preserve smooth operation and extend the life of gear-driven systems.
Nut – Part Number: 502197101
$7.65
In Stock
Nut
Part #502197101
This is a genuine replacement part sourced directly from the manufacturer. The nut is commonly found in yard tools from Husqvarna, such as trimmers, edgers, and brushcutters. This part is a square metal nut, which is generally used to help secure the handle assembly. Please be aware that there are different nuts used in the machine. Refer to the parts diagram to be sure of ordering the correct part. You may require a wrench when replacing this item. The nut is sold as an individual replacement part.
Trimmer Ball Bearing – Part Number: 738219900
$13.15
Special Order
Trimmer Ball Bearing
Part #738219900
This authentic replacement part is designed for use with Husqvarna lawn and garden equipment. Ball bearings are used to reduce friction between rotating parts. The balls or rollers take the load and spin, distributing the weight evenly while the minimal contact area of the ball reduces friction. Bearings experience constant wear from pressure, heat, vibration and friction, because of this, many bearings need to be periodically replaced. Please note this high-quality component is sold individually. Make sure to refer to the appropriate diagrams of your model for the correct location and application of this part.
Driver – Part Number: 537351402
$60.25
In Stock
Driver
Part #537351402
Screw Ihscfto – Part Number: 574181501
$6.95
Special Order
Screw Ihscfto
Part #574181501
Handle Extension – Part Number: 503997804
$26.35
Special Order
Handle Extension
Part #503997804
This replacement part restores or maintains a mechanical or structural function in compatible equipment. Crafted to original tolerances, it ensures clean fit and dependable performance. The surface finish is selected for endurance in outdoor use.
Leaf Blower Tank Cap Assembly – Part Number: 504117701
$17.55
In Stock
Leaf Blower Tank Cap Assembly
Part #504117701
This tank cap assembly is an original replacement part sourced straight from the manufacturer. It is commonly used in Husqvarna backpack blowers and brushcutters. This cap is crafted to seal the machine\'s fuel tank opening. It should be replaced if it is missing or damaged. This part is made of plastic, and it requires no tools to install.