Husqvarna 532405380 46-Inch High-Lift Blade – Genuine OEM Replacement Mower Blade

Part Number: 532405380
Category: Lawn Mower Replacement Parts & Cutting Components
Type: 46-Inch High-Lift Blade – Genuine OEM Replacement Mower Blade

The Husqvarna 532405380 46-Inch High-Lift Blade is a genuine OEM replacement cutting component designed for select Husqvarna lawn tractors, riding mowers, and compatible 46-inch mower deck assemblies.

Product Specifications

• Part Number: 532405380
• Manufacturer: Husqvarna
• Product Type: High-Lift Mower Blade
• Deck Application: 46-Inch Mower Deck – Model Dependent
• Blade Style: High-Lift
• Alternate Description: High-Lift Blade / Lawn Tractor Blade / Riding Mower Blade / Replacement Cutting Blade
• Component Type: Mower Deck / Cutting Component
• Primary Application: Lawn Mowing Equipment
• Common Equipment Types: Lawn Tractors / Riding Mowers – Model Dependent
• System: Mower Deck / Cutting System
• Function: Cuts Grass While Generating Airflow to Support Clipping Movement and Discharge
• Installation Location: Mower Deck / Blade Spindle Assembly
• Associated Components: Spindle / Mandrel / Blade Hardware / Mower Deck / Discharge System
• Replacement Type: Direct OEM Replacement
• OEM Status: Genuine Husqvarna OEM Part
• Condition: New
• Quantity: 1 High-Lift Blade
• Part Number Reference: 532405380
• Alternate Number Format: 532 40 53-80

Features & Benefits

• Genuine Husqvarna OEM replacement mower blade
• Designed for applicable 46-inch mower deck configurations
• High-lift blade profile
• Replaces the applicable original equipment cutting blade
• Helps restore clean and consistent grass cutting
• Generates airflow beneath the mower deck
• Supports efficient clipping movement and discharge
• Well suited for applicable bagging and side-discharge configurations
• Helps move cut grass toward the deck discharge area
• Supports consistent mower deck cutting performance
• Designed to match original equipment mounting requirements
• Suitable for replacing dull, bent, chipped, worn, or damaged blades
• Direct replacement for equipment specifying 532405380
• Sold individually

High-Lift Blade Function & Importance

The 532405380 High-Lift Blade serves as both a cutting and airflow-generating component within the applicable Husqvarna mower deck.

A simplified arrangement can be represented as:

Deck Drive → Spindle → 532405380 High-Lift Blade → Grass Cutting → Clipping Lift & Discharge

As the blade rotates, its sharpened cutting edge cuts the grass while the raised blade profile generates airflow beneath the mower deck. This airflow helps lift grass before cutting and move clippings toward the applicable discharge or collection system.

A worn or damaged high-lift blade may contribute to:

• Uneven grass cutting
• Torn or ragged grass tips
• Reduced clipping discharge
• Poor bagging performance
• Clumping beneath the mower deck
• Uncut strips of grass
• Reduced deck airflow
• Excessive vibration
• Abnormal mower deck noise
• Increased load on spindle components

Bent, cracked, or severely damaged blades should be replaced rather than repaired because mower blades operate at high rotational speeds.

Replacement, Inspection & Installation

Replacement of the Husqvarna 532405380 46-Inch High-Lift Blade may be appropriate if the original has:

• Become dull
• Developed excessive cutting-edge wear
• Become bent or distorted
• Developed chips or cracks
• Sustained impact damage
• Developed excessive corrosion
• Become unbalanced
• Developed damaged mounting surfaces
• Produced increasingly uneven cutting results

When replacing the blade, inspect the surrounding spindle or mandrel, blade mounting hardware, mower deck, spindle bearings, drive belt, pulleys, and adjacent blades for wear or damage.

Before installation, park the mower on a stable, level surface, shut off the engine completely, remove the ignition key, and prevent accidental starting. Wear appropriate hand protection when handling mower blades.

Install the replacement 532405380 High-Lift Blade in the correct factory orientation using the specified mounting hardware and torque requirements. Verify that the cutting edge and high-lift portion of the blade are oriented correctly before operating the mower.

Fitment & Important Notes

• Verify compatibility with your exact Husqvarna mower model, product number, serial number, 46-inch deck configuration, and production revision before ordering.
• Match part number 532405380 directly with the applicable OEM parts documentation.
• 532405380 is an application-specific High-Lift Mower Blade for compatible 46-inch mower deck configurations.
• The 46-inch designation refers to the applicable mower deck configuration and does not necessarily represent the physical length of one individual blade.
• A 46-inch mower deck may require multiple blades; verify the required blade quantity for your exact mower before ordering.
• Do not assume every Husqvarna 46-inch mower deck uses 532405380.
• High-lift blades that appear similar may differ in length, width, thickness, center-hole design, mounting pattern, lift profile, and cutting geometry.
• Do not select a replacement blade solely by deck width or approximate appearance.
• Use 532405380 as the primary OEM fitment reference.
• High-lift blades are generally intended to increase airflow and clipping movement; verify suitability for your mower's specific discharge, bagging, or cutting configuration.
• Inspect the spindle and blade hardware whenever replacing a blade damaged by impact.
• Replace blades showing cracks, severe bending, significant material loss, or damaged mounting areas.
• Do not weld, straighten, drill, grind mounting holes, or otherwise modify a damaged blade for reuse.
• If sharpening a serviceable blade, maintain proper balance before reinstallation.
• Verify correct blade orientation and mounting-hardware torque before operating the mower.
• Shut off the equipment and prevent accidental starting before servicing the mower deck.
• This listing is for one Husqvarna 532405380 46-Inch High-Lift Blade only unless otherwise specified. Additional blades, spindle assemblies, blade bolts, washers, adapters, belts, and other mower deck components are sold separately unless explicitly included.
• Match Husqvarna 532405380 with your mower's OEM parts documentation before ordering to ensure proper fitment.