Husqvarna 581055501 17-Inch High-Lift Blade – Genuine OEM Replacement Mower Blade

Part Number: 581055501
Category: Lawn Mower Replacement Parts & Cutting Deck Components
Type: 17-Inch High-Lift Blade – Genuine OEM Replacement Mower Blade

The Husqvarna 581055501 17-Inch High-Lift Blade is a genuine OEM replacement cutting blade designed for select Husqvarna lawn mowers, riding mowers, lawn tractors, and compatible mower deck assemblies.

Product Specifications

• Part Number: 581055501
• Manufacturer: Husqvarna
• Product Type: Mower Blade
• Blade Style: High-Lift
• Factory Designation: 17-Inch High-Lift Blade
• Nominal Blade Length: 17 Inches
• Alternate Description: High-Lift Mower Blade / Cutting Blade / Deck Blade / Lawn Tractor Blade / Replacement Mower Blade
• Component Type: Mower Deck / Cutting System Component
• Primary Application: Lawn Mowing Equipment
• Equipment Compatibility: Lawn Mowers / Riding Mowers / Lawn Tractors – Model Dependent
• System: Mower Deck Cutting System
• Function: Cuts Grass While Generating Airflow to Help Lift and Move Clippings Through the Mower Deck
• Installation Location: Mower Deck Blade / Mandrel Assembly
• Associated Components: Mandrel / Spindle / Blade Adapter / Blade Bolt / Deck Housing / Drive Belt / Discharge or Collection System
• Replacement Type: Direct OEM Replacement
• OEM Status: Genuine Husqvarna OEM Part
• Condition: New
• Quantity: 1 Blade
• Part Number Reference: 581055501
• Alternate Number Format: 581 05 55-01

Features & Benefits

• Genuine Husqvarna OEM replacement mower blade
• Factory-designated 17-inch high-lift blade
• Designed for compatible Husqvarna mower deck applications
• High-lift profile helps generate increased airflow beneath the deck
• Helps raise grass into the blade's cutting path
• Supports efficient movement of grass clippings through the mower deck
• Well suited for applicable side-discharge and collection configurations
• Helps support consistent cutting performance
• Designed to maintain the intended factory cutting geometry
• Application-specific blade length, profile, mounting interface, and lift characteristics
• Designed to interface with compatible OEM mandrel or spindle assemblies
• Helps restore cutting performance when replacing a dull or damaged blade
• Suitable for replacing bent, chipped, cracked, worn, or unbalanced blades
• Direct replacement for equipment specifying 581055501
• Sold individually

High-Lift Blade Function & Cutting Performance

The 581055501 High-Lift Blade performs two important functions within the applicable mower deck: cutting the grass and generating airflow.

A simplified cutting arrangement can be represented as:

Deck Drive System → Mandrel / Spindle → 581055501 High-Lift Blade → Grass Cutting & Clipping Airflow

As the blade rotates at operating speed, its cutting edges trim the grass while the raised high-lift sections help create airflow beneath the deck. This airflow helps stand grass blades upright before cutting and moves the resulting clippings toward the mower's discharge or collection path.

Compared with lower-lift blade designs, a high-lift configuration is generally intended to provide stronger airflow for applications where effective clipping movement is important.

A worn or damaged blade may contribute to:

• Uneven or inconsistent cutting
• Torn or ragged grass tips
• Reduced clipping discharge
• Poor bagging or collection performance
• Grass clumping beneath the deck
• Excessive mower deck vibration
• Increased cutting time
• Uncut strips of grass
• Abnormal spindle or mandrel loading
• Reduced overall mowing performance

Keeping the blade sharp, properly balanced, and free from structural damage helps maintain both cut quality and mower deck performance.

Replacement, Inspection & Installation

Replacement of the Husqvarna 581055501 17-Inch High-Lift Blade may be appropriate if the original has:

• Become excessively dull
• Developed chipped or damaged cutting edges
• Become bent from striking an object
• Developed cracks or structural damage
• Become excessively worn
• Developed significant corrosion or material loss
• Become difficult to properly balance
• Caused excessive mower deck vibration
• Reached the manufacturer's replacement limits

When replacing the blade, inspect the surrounding mandrel or spindle, blade adapter, blade bolt, washers, deck housing, belt system, and associated mounting components for wear or damage.

Before servicing the mower deck, shut off the engine completely, remove the ignition key where applicable, disconnect the spark plug or applicable power source, and prevent accidental starting.

Install the replacement 581055501 Blade in the correct orientation. The cutting edges and lift wings must face the direction specified by the equipment's OEM installation configuration. Secure the blade using the correct factory hardware and tighten all fasteners to the applicable manufacturer's specifications.

After installation, manually verify adequate blade clearance and proper mounting before returning the mower to operation.

Fitment & Important Notes

• Verify compatibility with your exact Husqvarna mower model, product number, serial number, mower deck configuration, and production revision before ordering.
• Match part number 581055501 directly with the applicable OEM parts documentation.
• 581055501 is identified as a 17-inch high-lift mower blade for applicable equipment.
• The 17-inch designation refers to the individual blade, not necessarily the overall cutting width of the mower deck.
• Multi-blade mower decks use multiple individual blades whose combined cutting paths create the deck's overall cutting width.
• Do not assume every Husqvarna mower or mower deck uses 581055501.
• Similar-length mower blades can differ in center-hole configuration, mounting pattern, width, thickness, cutting-edge geometry, lift profile, offset, and equipment compatibility.
• Do not select a replacement blade solely by its approximate 17-inch length or visual appearance.
• Use 581055501 as the primary OEM fitment reference.
• If the mower uses multiple blades, verify the required blade quantity and individual part numbers for the complete deck before ordering.
• A mower deck may use identical blades at every spindle or different blade configurations depending on the equipment design.
• Inspect the mandrel or spindle for excessive play or damage if the previous blade was bent or produced significant vibration.
• Replace any blade that is cracked, severely bent, structurally damaged, or worn beyond acceptable service limits.
• Do not weld, straighten, heat, drill, grind excessively, or otherwise modify a structurally damaged blade for continued use.
• If sharpening a serviceable blade, maintain the proper cutting angle and verify that the blade remains correctly balanced.
• Never operate the mower with a loose, improperly installed, or severely damaged cutting blade.
• This listing is for one Husqvarna 581055501 17-Inch High-Lift Blade only unless otherwise specified. Mandrels, spindles, blade bolts, adapters, washers, belts, and other mower deck components are sold separately unless explicitly included.
• Match Husqvarna 581055501 with your mower's OEM parts documentation before ordering to ensure proper fitment.