YTH22V46 405143 Deck Belt 1/2"x106" Replacement 46" AYP Craftsman Poulan Husqvarna 584453101 YTH22V46 YTH20K46 YTH21K46 YTA22V46 YTH2246 YT46LS YTH18K46 532405143 21546607 fits Husqvarna 2246LS

What It Is

This is a 1/2-inch wide by 106-inch long deck belt designed to replace the OEM belt on 46-inch cutting decks found on many Craftsman, Poulan, Husqvarna, and AYP lawn tractors. It drives the mower blades from the engine pulley.

Fitment & Compatibility

Before buying, confirm your deck size is exactly 46 inches. Measure your old belt length—it must be 106 inches (end-to-end, not loop circumference). Cross-reference your model number against the list: YTH22V46, YTH20K46, YTH21K46, YTA22V46, YTH2246, YT46LS, YTH18K46, and Husqvarna 2246LS. This belt replaces OEM part numbers 405143, 584453101, 532405143, and 21546607. It is an aftermarket belt, not OEM Craftsman, but matches the 1/2" width and 106" length. Check your deck’s belt routing diagram before installation—wrong routing can cause premature wear.

Key Things to Know

• Quality: Aftermarket belts can vary. This one has a 5.0 rating but only 1 review, so verify return policy.
• Installation difficulty: Moderate. You’ll need to remove the deck or at least the belt cover and tensioner pulley. No special tools required beyond a wrench.
• Common gotcha: The 106" length is critical. A belt that’s even 1" too short or long won’t tension correctly, causing slipping or blade disengagement.
• Durability: Aftermarket belts may wear faster than OEM, especially on heavy-use or uneven terrain. Inspect pulleys for damage before installing.

Should You Buy It

Buy this if you need a budget-friendly replacement for a 46-inch deck on a Craftsman, Poulan, or Husqvarna tractor from the listed models, and you’re comfortable with a moderate DIY install. Skip it if you want OEM reliability for heavy commercial use or if your deck size isn’t exactly 46 inches—measure first to avoid a wasted return.