405143 Mower Deck Belt 1/2 x 106'' Compatible with Husqvarna 584453101 YTH22V46 YTH20K46 YTH21K46 YTA22V46 YTH2246 YT46LS YTH18K46 532405143 46 Inch Craftsman Poulan PP20VA46

What It Is

This is a 1/2-inch wide by 106-inch long V-belt designed to drive the mower deck blades on select 46-inch cutting deck lawn tractors. It replaces OEM part numbers 405143, 584453101, and 532405143, and is commonly used on Husqvarna, Craftsman, and Poulan models.

Fitment & Compatibility

Before buying, verify three things:

• Deck size: This belt is specifically for 46-inch cutting decks—not 42-inch or 54-inch.
• Model number: Check your mower’s model tag (under seat or on frame). Compatible models include Husqvarna YTH22V46, YTH20K46, YTH21K46, YTA22V46, YTH2246, YT46LS, YTH18K46, and Craftsman/Poulan PP20VA46. Not all 46-inch decks use the same belt routing or length.
• Measurements: The belt is 1/2” wide x 106” outside circumference. If your original belt measures differently, this won’t fit.
• OEM vs aftermarket: This is an aftermarket replacement. It’s a direct fit for the OEM part numbers listed, but quality and lifespan may vary slightly from genuine Husqvarna/Craftsman belts.

Key Things to Know

• Installation difficulty: Moderate. You’ll need to remove the deck, release the belt tensioner, and route the belt around all pulleys according to your deck’s diagram. A belt routing decal is often on the deck top.
• Quality: At $9.99, this is a budget-friendly option. Expect 1-2 seasons of normal use under moderate conditions. Heavy debris or frequent use may shorten lifespan.
• Common gotcha: The belt must be routed correctly around the idler pulley and tensioner—incorrect routing causes slipping or premature wear. Take a photo of the old belt before removal.
• Check pulley condition: Worn or sticky pulleys will destroy a new belt quickly. Spin each pulley by hand; replace any that wobble or drag.

Should You Buy It

This belt is a solid budget choice if you need a quick replacement for a 46-inch deck on a compatible Husqvarna, Craftsman, or Poulan model and your pulleys are in good shape. If you mow heavy grass weekly or want maximum durability, consider spending more on a genuine OEM belt. For occasional use or tight budgets, it’s a good value.