405143 46 Inch Mower Deck Belt for Hussqvarna Crafftsman Pouulan, Replacement Belt for YTH22V46, YTH20K46, YTH21K46, YTA22V46, YTH2246, Fits 532405143, 584453101 (1/2" x 105.75")

What It Is

This is a 46-inch mower deck belt designed to drive the blades on select Husqvarna, Craftsman, and Poulan lawn tractors with a 46-inch cutting deck. It’s a direct replacement for OEM part numbers 532405143 and 584453101.

Fitment & Compatibility

Before buying, confirm three things:

• Deck size: Your mower must have a 46-inch deck—this belt will not fit 42-inch or 54-inch decks.
• Model number: Known fits include YTH22V46, YTH20K46, YTH21K46, YTA22V46, and YTH2246. Check your mower’s model tag (usually under the seat or on the frame).
• Measurements: Belt is 1/2 inch wide and 105.75 inches long. Measure your old belt end-to-end (not looped) to verify. This is an aftermarket replacement—quality is generally good, but minor length variation can occur; compare with your old belt before installation.

Key Things to Know

• Installation difficulty: Moderate. You’ll need to remove the deck or at least access the pulleys underneath. A belt routing diagram is helpful (check your manual or online).
• Common gotcha: The belt must be routed correctly around all pulleys and the idler arm. Improper routing causes slipping or blade disengagement.
• Quality note: This aftermarket belt is often made of Kevlar or similar reinforced rubber. It should last a season or two under normal use, but heavy-duty mowing may shorten lifespan.
• No extra hardware: The belt comes alone—no idler pulleys or guides. Check pulley condition; worn pulleys will eat belts faster.

Should You Buy It

If you have a 46-inch Husqvarna, Craftsman, or Poulan tractor from the listed models and need a budget-friendly belt that gets the job done, this is a solid buy. It’s not OEM, but at this price, it’s a practical replacement for a worn or broken belt. Skip it if you want a premium belt for heavy commercial use or if your deck is a different size.