405143 584453101 (1/2 x 106'') Lawn Mower Deck Belt 405143 for Husqvarna YTH22V46 YTH20K46 YTH21K46 YTA22V46 584453101 532405143 Craftsman Poulan Pro 46 Inch

What It Is

This is a 1/2-inch wide by 106-inch long lawn mower deck belt, designed to drive the blades on 46-inch cutting decks. It’s primarily used on Husqvarna YTH and YTA series tractors, as well as compatible Craftsman and Poulan Pro models with 46-inch decks.

Fitment & Compatibility

Before buying, confirm three things:

• Deck size – This belt fits a 46-inch deck only. Measure your belt length; it must be exactly 106 inches.
• Model compatibility – Direct OEM replacements include Husqvarna 532405143, 584453101, and Craftsman 405143. It fits Husqvarna YTH22V46, YTH20K46, YTH21K46, YTA22V46, and many Craftsman/Poulan Pro 46-inch models. Check your owner’s manual or old belt part number.
• Width – It is 1/2 inch wide. If your pulley grooves are narrower or wider, this belt won’t seat properly.

Key Things to Know

• Quality – This is an aftermarket belt, not OEM. Most users report good durability for residential use, but some note it may wear faster than OEM on heavy-duty or commercial mowing.
• Installation – Moderate difficulty. You’ll need to remove the deck and possibly the blade pulley to route the belt correctly. Watch a model-specific video to avoid routing mistakes.
• Common gotcha – The belt may be slightly tighter or looser than OEM. Adjust the deck tensioner if needed. If the belt slips or squeals, double-check routing and tension.
• Return policy – At this price point, many sellers expect you to verify fitment before buying. Don’t cut the packaging until you’re sure it matches.

Should You Buy It

This belt is a solid budget choice for homeowners with a Husqvarna or compatible 46-inch tractor who mow a standard lawn and want to save over OEM pricing. If you mow frequently, on rough terrain, or need maximum longevity, consider OEM. For light-to-moderate use, it’s a good value.