MowerPartsGroup Set of 2 Blades for Craftsman Husqvarna 405380 Ariens 21546611

What It Is

This is a set of two replacement mower blades designed for 42-inch and 46-inch cutting decks on Craftsman, Husqvarna, and Ariens lawn tractors. They are a direct aftermarket alternative to OEM part numbers 405380 (Craftsman/Husqvarna) and 21546611 (Ariens).

Fitment & Compatibility

Before buying, confirm your mower deck size (42" or 46") and model number. These blades fit many Craftsman LT1000/2000/3000, Husqvarna YTH/YTA series, and Ariens Zoom/IKON models with the listed OEM parts. Measure your current blade length (20.5 inches) and center hole size (1 inch round) to verify. They are not universal—check your owner’s manual or existing blade part number to avoid returning mismatched blades.

Key Things to Know

• Quality: Made from heat-treated steel with a hardened edge; generally durable for residential use but may not hold an edge as long as OEM high-carbon blades.
• Installation: Requires a socket wrench and torque wrench (50–60 ft-lbs recommended). Use thread-locker on bolts if not already applied.
• Gotchas: These blades are not mulching or bagging-specific—they are standard “lift” blades. For mulching kits or high-lift needs, look elsewhere.
• Balance: Always check blade balance after installation; unbalanced blades cause vibration and spindle wear.

Should You Buy It

If you need a budget-friendly, direct-fit replacement for a Craftsman, Husqvarna, or Ariens 42/46-inch deck and don’t require specialized mulching or high-lift performance, this set delivers solid value. It’s best for homeowners doing regular mowing on standard turf.