532405143 46 Inch Mower Deck Belt 105.5x1/2 Fit Husqvarna Craftsman Poulan | 105.5" x 1/2" drive belt for 46" riding mowers, 405143 compatible with Husqvarna, Poulan Pro, AYP & Craftsman lawn tractors

What It Is

This is a 105.5-inch long, 1/2-inch wide drive belt for 46-inch riding mower decks. It transfers power from the engine pulley to the mower blades, and is commonly used on Husqvarna, Craftsman, Poulan Pro, and AYP lawn tractors.

Fitment & Compatibility

Before buying, confirm three things:

• Deck size: Must be exactly 46 inches (measured blade tip to tip).
• Belt measurements: 105.5" length x 1/2" width. Measure your old belt or check your model’s spec sheet.
• Brand/model: Fits most Husqvarna, Craftsman (especially LT1000/2000 series), Poulan Pro, and AYP tractors with a 46" stamped deck. Not compatible with fabricated decks or 42"/48"/54" decks.

Cross-reference your machine’s model number with OEM part 532405143 (also listed as 405143). Aftermarket belts like this one often work fine, but may vary slightly in material or tension. If your deck uses a different belt routing (e.g., three-blade vs. two-blade), double-check the diagram.

Key Things to Know

• Quality: At $12, it’s a budget aftermarket belt. Expect shorter lifespan than OEM (1-2 seasons vs. 3-4), but fine for light use.
• Installation: Moderate difficulty. You’ll need to remove the deck or at least the belt guard, and use a wrench to release the tensioner pulley. Watch for proper routing around all pulleys.
• Common gotchas: Belt may feel slightly tight or loose on first install—check tension after 10 minutes of run time. Also, ensure the deck is level to avoid premature wear.
• Warranty: No manufacturer warranty on aftermarket belts; OEM belts usually come with a 1-year warranty.

Should You Buy It

This is a solid budget pick if you need a quick replacement for a 46" deck on a Husqvarna, Craftsman, or Poulan Pro tractor and don’t mind replacing it every season or two. Skip it if you want maximum durability or have a heavy-use commercial mower—go OEM instead.