405143 Mower 46" Deck Belt for Craftsman/AYP/Poulan/Husqvar na 532405143 584453101 Ariens 21546607 Compatible with Husqva na 2246LS 2346XLS YTH22V46 YTH20K46 YTH2146X (1/2" x 105 1/2")

What It Is

This is a 46-inch deck drive belt (1/2" wide x 105.5" long) for riding mowers and lawn tractors. It transfers power from the engine pulley to the mower deck blades, enabling cutting. Designed for OEM replacement on Craftsman, AYP, Poulan, Husqvarna, and Ariens models.

Fitment & Compatibility

Before buying, verify three things:

• Deck size: This belt fits 46-inch cutting decks only. Measure your deck width—if it’s 42" or 54", this won’t work.
• Belt dimensions: It’s 1/2" wide x 105.5" long. Measure your old belt or check your manual. A 1/2" width is standard for many tractors; 105.5" length is critical for proper tension.
• Model numbers: Directly replaces OEM part numbers 405143, 532405143, 584453101, and Ariens 21546607. Fits Husqvarna models like 2246LS, 2346XLS, YTH22V46, YTH20K46, YTH2146X. Also fits many Craftsman, Poulan, and AYP tractors with 46" decks. Cross-reference your model number with the belt length and width.

Key Things to Know

• Quality: At $9.89, this is an aftermarket belt. It may wear faster than OEM (e.g., Husqvarna original), but for light-to-moderate use, it’s a solid budget pick. Check for fraying after first 5 hours.
• Installation: Moderate difficulty. You’ll need to remove the deck or at least the belt guards. A belt routing diagram is usually printed on the deck or in the manual—take a photo before removing the old belt.
• Common gotcha: If the belt is too tight or too loose, the deck may not engage or the belt may slip. Verify the 105.5" length matches exactly—some aftermarket belts are slightly off. Also, inspect pulleys for damage or debris before installing.
• No warranty: Aftermarket belts typically lack manufacturer warranty. Buy from a seller with a return policy in case of fitment issues.

Should You Buy It

If you need a low-cost replacement for a 46" deck on a Craftsman, Husqvarna, or similar tractor and are comfortable with a DIY install, this belt is a practical choice for occasional mowing. For heavy commercial use or if you want longer lifespan, spend more on an OEM belt.