405143 Deck Belt Fits 46" AYP, Poulan, Husqvarna, Craftsman, Replaces 405143, 532405143, 21546607, 584453101 Mower Deck (2 Pack)

What It Is

This is a 2-pack of aftermarket deck belts (part 405143) designed for 46-inch cutting decks on AYP, Poulan, Husqvarna, and Craftsman lawn tractors. It drives the mower blades and is a direct replacement for OEM part numbers 405143, 532405143, 21546607, and 584453101.

Fitment & Compatibility

Before buying, verify these three things:

• Deck size: Only fits 46-inch mower decks. Measure your deck’s cutting width if unsure.
• Belt dimensions: The belt is 1/2 inch wide x 96 inches long. Check your old belt’s length (lay it flat and measure end to end).
• Model compatibility: Fits most AYP, Poulan, Husqvarna, and Craftsman tractors from the 1990s onward that use a 46-inch stamped steel deck. Cross-reference your mower’s model number with the OEM part numbers listed.

Aftermarket belts may vary slightly in thickness or material from OEM, but this one is widely compatible.

Key Things to Know

• Quality: Aftermarket belt; fine for residential use but may wear faster than OEM under heavy commercial loads.
• Installation: Moderate difficulty—requires removing the deck or using a spring-loaded tensioner. Have a wrench and a belt routing diagram handy.
• Common gotcha: If your old belt snapped, check the pulleys for damage (bent, rusted, or seized) before installing the new belt.
• 2-pack value: Buying two at once is cheaper than a single OEM belt, but you may not need the second unless you mow heavily.

Should You Buy It

If you own a 46-inch Craftsman, Poulan, or Husqvarna tractor and need a reliable, affordable replacement for residential mowing, this 2-pack is a solid buy. Skip it if you need an exact OEM match for commercial use or if your deck uses a different belt length.