1/2 x 106 Inch V Belt 405143 Lawn Mower Deck Belt for 46" Deck Husqvarna Craftsman 532405143 YTA22V46 YTH22V46 YTH20K46 YTH21K46, Ariens 21546607 AYP 584453101 7133156 (Aramid)

What It Is

This is a 1/2-inch wide, 106-inch long V-belt designed to drive the mower blades on 46-inch cutting decks. It’s a common replacement for Husqvarna, Craftsman, Ariens, and AYP lawn tractors and zero-turn mowers with 46” decks.

Fitment & Compatibility

• Deck size: 46-inch cutting width only. Do not use on 42”, 48”, or 54” decks.
• Models: Fits Husqvarna YTA22V46, YTH22V46, YTH20K46, YTH21K46, Craftsman, Ariens, and AYP tractors using OEM part 532405143, 405143, or 21546607.
• Cross-references: Replaces AYP 584453101, 7133156, and many others. Check your old belt’s part number or measure length—must be 106” and 1/2” wide.
• OEM vs aftermarket: This is an aftermarket aramid belt. It’s a direct fit for OEM specs but not a genuine Husqvarna/Craftsman part.
• What to check before buying: Confirm your deck is 46” (measure blade tip to blade tip), verify your original belt’s part number (often stamped on the belt), and ensure pulleys are clean and spin freely.

Key Things to Know

• Quality: Aramid construction is stronger than standard rubber belts—good for heavy grass or frequent use.
• Installation: Moderate difficulty. You’ll need to remove the deck or at least the belt shield. Route per the deck diagram (usually under the seat or on the deck). Tensioner must be released to install.
• Common gotchas: Belts can be tight; use a wrench to pivot the tensioner, not force. Check all pulley bearings before installing—a seized pulley will destroy a new belt fast.
• Lubrication: Do not use belt dressing. It can cause slipping and premature wear.

Should You Buy It

Yes, if you need a reliable, affordable replacement for a 46” deck belt on a Husqvarna, Craftsman, or Ariens tractor. The aramid material offers good durability for the price, and fitment is accurate for the listed models. Skip it if you strictly want an OEM belt or have a different deck size.