UDC Parts 46" Notched High-Lift Mower Blades for Husqvarna 532405380 / 405380 – Pre-Sharpened, High-Strength Steel

UDC Parts 532405380 / 405380 is a set of pre-sharpened, notched high-lift 46" replacement mower blades engineered to directly fit many Husqvarna, Craftsman, Poulan, Ariens and compatible lawn tractor decks.

These replacement blades are designed to restore cutting performance for 46-inch decks without modification. Manufactured from high-strength steel, each blade arrives pre-sharpened with a protective coating and the standard five-point star center hole that fits factory spindles. The notched high-lift profile helps lift grass for a cleaner cut and improved bagging where applicable, while dimensions are tailored to match OEM part numbers including 532405380 and 405380.

Which mower models and OEM numbers will these blades replace?

These blades are built to replace a long list of OEM parts and fit many popular garden tractor models. They match Husqvarna part numbers 532405380 and 405380 and cross-reference with several Craftsman, Poulan, Ariens and AYP numbers. Always compare blade dimensions and center hole pattern with your original blade to confirm fit.

• Direct replacements for Husqvarna 532405380, 405380 and related OEM codes
• Compatible with Husqvarna models: YTH22V46, Z246, YTH20K46, YTH21K46, RZ4623, and many YTH/YTA series
• Cross-fits Craftsman (numerous 917.* part numbers), Poulan PB and PP series, Ariens and Jonsered listings
• Check the detailed compatibility list in the product features before purchase

How do the blade dimensions and design affect cutting performance?

Dimensions and profile determine whether a blade will clear clippings and produce an even cut. These UDC blades measure approximately 23" diagonally with a 2-3/4" width, a 1-3/16" air lift and a five-point star center hole—matching common 46" deck requirements. The notched high-lift shape promotes vertical airflow to lift grass blades into the cutting path.

• Overall length: 23" (measured diagonally)
• Width: 2-3/4"; cutting edge length: 9-1/4"
• Center: five-point star hole to fit factory spindles
• Blade type: notched high-lift for better clipping evacuation and bagging

What materials, durability features, and maintenance should I expect?

UDC Parts blades are stamped from high-strength steel and finished with a temporary protective coating to prevent corrosion during shipping. Each blade ships pre-sharpened so you can install and mow right away; the cutting edge can be safely resharpened when needed to extend service life. The manufacturer provides one year of product support covering defects and product-related issues.

• High-strength steel construction for impact resistance
• Pre-sharpened edge with protective coating that wears off on first uses
• Resharpenable cutting edge to prolong useful life
• 1-year manufacturer product support for defects

How easy is installation and what should I check before fitting these blades?

Installation is straightforward: raise and secure the mower, remove the old blades, align the five-point center hole with your spindle, and torque the mounting hardware to the tractor maker’s specification. Before installing, confirm blade length, width, center-hole pattern and the notched high-lift profile match your original blades to ensure safe operation and correct deck clearance.

• Simple direct-fit swap for matching 46" deck spindles
• Confirm deck clearance and blade orientation before first run
• Use manufacturer-recommended torque settings for blade bolts
• Wear gloves and eye protection during installation

Who is this for: Owners of 46-inch lawn tractor decks and zero-turn machines who need a reliable, OEM-compatible replacement blade set that restores lifting and bagging performance. These blades suit homeowners and landscapers who want a durable, pre-sharpened, resharpenable blade engineered to match Husqvarna, Craftsman, Poulan, Ariens and similar equipment with a five-point star spindle. If you maintain multiple mowers or need a direct-fit aftermarket alternative to part 532405380 / 405380, this UDC Parts set is built for fast installation and consistent mowing results.