405143 Deck Drive Belt 1/2" X106" 46" Fits Craftsman AYP Poulan Husqvarna 21546607 584453101 532405143 YTH22V46 YTH2246TDR Lawn Mower

What It Is

The 405143 deck drive belt is a 1/2" wide by 106" long V-belt that transfers power from the engine pulley to the mower deck blades on 46-inch cutting decks. It’s a direct replacement for popular Craftsman, AYP, Poulan, and Husqvarna lawn tractors and zero-turn mowers.

Fitment & Compatibility

Check these before buying:

• Deck size: Only fits 46-inch decks. Measure your deck width if unsure.
• OEM numbers: Matches Craftsman 21546607, AYP 584453101, and Husqvarna 532405143. Cross-reference your old belt’s part number.
• Belt dimensions: 1/2" width x 106" length. Measure your existing belt (lay flat, measure end-to-end) to confirm.
• Common models: Fits Craftsman YTH22V46, YTH2246TDR, and many Poulan Pro/Husqvarna 46" tractors. Verify your model number on the manufacturer’s site or under the seat.
• Aftermarket note: This is an aftermarket belt—reliable but not OEM. It works as a direct swap if dimensions match.

Key Things to Know

• Quality: Good for the price; many users report lasting 1-2 seasons with normal use. Not as heavy-duty as OEM but fine for residential mowing.
• Installation: Requires routing around idler pulleys and the deck spindle. Use a belt diagram (often under the deck or in the manual) to avoid misrouting.
• Common gotcha: If the belt slips or squeals, check that the tensioner spring is strong and the pulleys are clean. A worn idler pulley can cause premature belt wear.
• Storage tip: Remove the belt or slacken tension during winter storage to prevent stretching and cracking.

Should You Buy It

If you need a budget-friendly replacement for a 46" Craftsman, AYP, or Husqvarna mower and your deck is in good shape, this belt is a solid choice. It’s not built for heavy commercial use, but for weekly residential mowing, it offers reliable performance at a fraction of the OEM cost. Just double-check your model number and belt length before ordering.