BlueStars 405143 Mower Deck Belt - for 46" Deck Ariens 21546607 AYP 584453101 7133156 Craftsman 532405143 Husqvarna 2246LS 2346XLS YTH22V46 YTH20K46 | Aramid Cord | 106 inch

What It Is

The BlueStars 405143 is an aftermarket mower deck belt designed for 46-inch cutting decks on select Ariens, Craftsman, Husqvarna, and AYP tractors. It drives the blades and is a direct replacement for OEM part numbers 405143, 21546607, 584453101, 7133156, and 532405143.

Fitment & Compatibility

Before buying, confirm your mower has a 46-inch deck (measure blade tip to blade tip). This belt is 106 inches long, 1/2 inch wide, with a standard A-section profile. It fits models like Craftsman YTH22V46, YTH20K46, Husqvarna 2246LS, 2346XLS, and Ariens 21546607. Always double-check your mower’s model number and current belt part number—this is a universal aftermarket belt, so OEM part cross-references are essential. If your deck is 42-inch or 54-inch, this belt will not fit.

Key Things to Know

• Aramid cord construction is stronger than standard rubber belts, offering better heat resistance and longer life under heavy use.
• Installation is moderate difficulty—you’ll likely need to remove the deck or at least the blade pulley to route the belt. Have a diagram handy.
• No stretch-fit—this belt is fixed length; if your old belt was stretched, a new one may feel tighter. That’s normal.
• Check pulleys for wear before installing—worn or grooved pulleys will shred any belt quickly.

Should You Buy It

Buy this if you need a reliable, budget-friendly replacement for a 46-inch deck belt on a Craftsman, Husqvarna, or Ariens tractor and want better durability than standard rubber belts. It’s not OEM, but the aramid cord construction and high user ratings make it a solid choice for DIY maintenance. Skip it if you prefer genuine OEM parts for warranty reasons.