Husqvarna 574481301 21-Inch Lift Blade – Genuine OEM Replacement Mower Blade
Part Number: 574481301
Category: Zero-Turn Mower, Lawn Mower & Cutting Deck Components
Type: 21-Inch Low-Lift Blade – Genuine OEM Replacement Mower Blade
The Husqvarna 574481301 21-Inch Lift Blade is a genuine OEM replacement mower blade designed for select Husqvarna zero-turn mowers and compatible cutting deck assemblies. The OEM blade specification is 21" x 3" x .250" with .75" lift, and Husqvarna parts documentation identifies 574481301 as a 21-inch low-lift blade.
Product Specifications
- Part Number: 574481301
- Manufacturer: Husqvarna
- Product Type: Mower Blade
- OEM Description: Blade, Low Lift 21"
- Detailed Description: Blade, 21" 3 x .25 x .75 Lift
- Blade Length: 21 Inches
- Blade Width: 3 Inches
- Blade Thickness: .250 Inch / 1/4 Inch
- Lift: .75 Inch
- Lift Type: Low Lift
- Component Type: Cutting Deck Blade
- Primary Application: Zero-Turn Mower / Commercial Mower
- System: Mower Deck / Cutting System
- Function: Cuts Grass and Generates Controlled Deck Airflow
- Compatible Brand: Husqvarna
- Installation Location: Mower Deck Spindle
- Documented Deck Application: Select 60-Inch Cutting Decks
- Associated Components: Spindle / Blade Bolt / Washer / Cutting Deck
- Replacement Type: Genuine OEM Replacement
- OEM Status: Genuine Husqvarna OEM Part
- Condition: New
- Quantity: 1 Blade
- Part Number Reference: 574481301
- Alternate Number Format: 574 48 13-01
Husqvarna parts documentation specifically lists 574481301 as “BLADE, LOW LIFT 21"” and specifies three blades for applicable 60-inch cutting deck configurations.
Features & Benefits
- Genuine Husqvarna OEM replacement mower blade
- 21-inch blade length
- Heavy-duty 3-inch blade width
- .250-inch blade thickness
- .75-inch lift profile
- Low-lift blade configuration
- Designed for compatible Husqvarna mower decks
- Provides efficient grass cutting
- Generates controlled airflow beneath the cutting deck
- Helps support consistent clipping discharge
- OEM-specific blade geometry
- Designed to maintain proper balance during operation
- Suitable for replacing worn, bent, chipped, or damaged blades
- Direct replacement for equipment specifying 574481301
- Genuine OEM blade rather than an unspecified universal mower blade
21 x 3 x .250-Inch Blade Design
The 574481301 uses a substantial mower blade profile measuring approximately:
21" Length × 3" Width × .250" Thickness
These dimensions are important when identifying the correct replacement blade.
Blade length determines the cutting coverage provided by each spindle, while blade width and thickness contribute to the blade's structural characteristics and overall cutting configuration.
Do not substitute another 21-inch blade based solely on length. Width, thickness, center-hole configuration, lift, and overall geometry must also match the intended application.
.75-Inch Low-Lift Design
Although the product is broadly described as a lift blade, Husqvarna parts documentation specifically classifies 574481301 as a low-lift blade with a .75-inch lift profile.
The raised trailing portion of a mower blade creates airflow as the blade rotates.
Compared with higher-lift blade designs, a low-lift configuration generally produces less aggressive upward airflow beneath the mower deck.
The correct lift profile is important because it affects:
- Grass movement
- Clipping discharge
- Deck airflow
- Engine load
- Cutting characteristics
- Debris movement beneath the deck
For equipment specifying 574481301, using the OEM blade maintains the intended .75-inch lift configuration.
Cutting & Airflow Function
A mower blade performs two related jobs during operation:
Cutting
The sharpened blade edges travel at high speed and cut grass as the mower moves across the lawn.
Airflow
The blade's lift surfaces move air beneath the cutting deck, helping manage grass and clippings after they are cut.
The geometry of 574481301 is designed to provide the cutting and airflow characteristics required by compatible mower decks.
Documented 60-Inch Deck Application
The 574481301 is documented as an optional blade for select 60-inch Husqvarna cutting decks.
Compatible deck documentation specifies:
- Blade Length: 21 Inches
- Blade Quantity: 3
- Combined Application: 60-Inch Cutting Deck
- Blade Type: Low Lift
The three-blade arrangement allows the individual cutting paths to work together across the width of the mower deck.
This does not mean the blade fits every Husqvarna 60-inch mower. Always verify the complete equipment model and product number.
Documented Husqvarna PZ Applications
The 574481301 is documented for multiple Husqvarna PZ-series cutting deck configurations.
Examples include select:
- Husqvarna PZ 60
- Husqvarna PZ 6030 CV
- Husqvarna PZ 6034 FX
- Other compatible PZ-series 60-inch cutting deck configurations
For example, parts documentation for the PZ 60 lists 574481301 – Blade, 21" 3 x .25 x .75 Lift as an optional cutting blade.
Exact compatibility can vary by product number and production year.
Low-Lift vs. High-Lift Blades
Husqvarna documents multiple optional blade configurations for certain compatible mower decks.
For example, one applicable deck configuration lists:
- 522829301 – 21" High-Lift Blade
- 574481301 – 21" Low-Lift Blade
- 522936601 – 21" Gator Blade
- 539109755 – 21" Wavy Reverse-Lift Blade
This confirms that 574481301 is specifically the low-lift option, rather than the high-lift or mulching/Gator configuration.
These blade styles should not automatically be treated as interchangeable for every mower or mowing condition.
Common Reasons for Replacement
Replacement of the 574481301 21-Inch Blade may be appropriate if the original blade has:
- Become excessively dull
- Developed deep nicks
- Become bent
- Cracked
- Developed excessive wear
- Become severely corroded
- Sustained impact damage
- Developed an enlarged or damaged mounting hole
- Become unbalanced
- Developed excessive erosion along the cutting edge
- Been damaged after striking rocks or other objects
- Reached the end of its normal service life
A blade with structural damage should be replaced rather than simply sharpened.
Possible Signs of Blade Wear
A worn or damaged mower blade may contribute to:
- Ragged grass tips
- Uneven cutting
- Missed grass
- Reduced cutting quality
- Increased vibration
- Poor clipping discharge
- Excessive mower deck noise
- Visible blade damage
- Uneven blade wear
- Increased mowing time
Poor cutting performance can also result from incorrect deck leveling, worn spindles, improper tire pressure, belt problems, or excessive mowing speed.
Blade Inspection
Inspect the blade regularly for:
- Dull cutting edges
- Cracks
- Bending
- Deep nicks
- Corrosion
- Excessive thinning
- Missing material
- Damaged mounting area
- Uneven wear
- Impact damage
Pay particular attention to the blade's lift surfaces and cutting edges.
Never continue operating the mower with a cracked or structurally compromised blade.
Blade Balance
Proper blade balance is important for smooth mower operation.
An unbalanced blade can contribute to:
- Excessive vibration
- Spindle bearing wear
- Deck fatigue
- Poor cutting quality
- Increased mechanical stress
- Operator discomfort
If a blade is sharpened, material should be removed appropriately from both cutting edges while maintaining proper balance.
If correct balance cannot be restored, replace the blade.
Spindle Inspection
Whenever replacing 574481301, inspect the applicable spindle assembly.
Check for:
- Excessive bearing play
- Rough rotation
- Bent spindle shaft
- Damaged mounting surface
- Excessive vibration
- Loose mounting hardware
- Cracks or other damage
A bent or worn spindle can cause a new blade to wobble and produce poor cutting results.
Blade Bolt & Hardware Inspection
Inspect the blade mounting hardware for:
- Damaged threads
- Corrosion
- Excessive wear
- Bending
- Cracking
- Damaged washers
- Improper seating
Compatible Husqvarna mower deck documentation lists dedicated blade bolts and spindle washers as separate components.
Replace damaged mounting hardware as necessary.
Installation Considerations
Before replacing 574481301:
- Park the mower on a flat, stable surface.
- Disengage the PTO.
- Shut off the engine.
- Remove the ignition key.
- Allow all moving components to stop completely.
- Disconnect the spark plug or battery as appropriate.
- Securely raise or access the mower deck if necessary.
- Wear heavy-duty protective gloves.
- Prevent the blade from rotating during removal.
- Remove the blade bolt and applicable washer.
- Remove the original blade.
- Inspect the spindle and mounting hardware.
- Position the new 574481301 Blade in the correct orientation.
- Reinstall the blade hardware.
- Tighten the blade bolt according to the mower's specified torque procedure.
- Verify that the blade is securely mounted.
- Rotate the blade manually where appropriate to check clearance.
- Reinstall all guards or components removed during service.
Blade Orientation
Correct blade orientation is essential.
The blade's cutting edges and lift surfaces must face in the direction specified by the mower deck design.
Installing a mower blade upside down can result in:
- Poor or virtually nonexistent cutting
- Incorrect airflow
- Poor discharge performance
- Increased vibration
- Abnormal deck operation
If orientation is uncertain, compare the replacement with the original blade and consult the mower's service documentation.
Important Notes
- Verify compatibility with your exact mower model, product number, serial number, and cutting deck configuration before ordering.
- Match part number 574481301 directly with the applicable OEM illustrated parts documentation.
- Husqvarna documentation identifies 574481301 as a 21-inch low-lift blade.
- The documented blade specification is 21" x 3" x .250" with .75" lift.
- This blade is documented as an optional configuration on select Husqvarna 60-inch mower decks.
- Compatible 60-inch deck configurations can use three 21-inch blades.
- Do not assume 574481301 fits every Husqvarna mower with a 60-inch deck.
- Do not select a replacement blade solely by its 21-inch length.
- Blade width, thickness, lift, mounting configuration, and overall geometry must also match.
- Do not confuse 574481301 with the higher-lift 522829301 blade.
- Do not confuse it with a Gator/mulching blade.
- Use 574481301 as the primary fitment reference.
- Inspect all blades on multi-blade decks when replacing one blade.
- Inspect the spindle and mounting hardware for damage.
- Replace bent, cracked, or structurally damaged blades rather than attempting to straighten them.
- Maintain proper blade balance when sharpening.
- Do not grind away excessive blade material.
- Verify correct blade orientation during installation.
- Tighten blade mounting hardware according to the equipment manufacturer's specifications.
- Never work beneath unsupported mowing equipment.
- Wear heavy-duty gloves when handling mower blades.
- Disengage the PTO, shut off the engine, remove the ignition key, and prevent accidental starting before servicing the cutting deck.
- This listing is for one Husqvarna 574481301 21-Inch Low-Lift Blade only unless otherwise specified. Spindle assembly, blade bolt, washers, pulleys, belts, and other mower deck components are sold separately unless explicitly included.
- Match Husqvarna 574481301 with your equipment's OEM parts documentation before ordering to ensure proper fitment.
