405143 532405143 Mower Deck Belt 1/2"x106" for 46" Craftsman/AYP/Poulan | Fits 584453101, Ariens 21546607,Husqvarna 2246LS YTH20K46 YTH2146X

What It Is

This is a replacement mower deck belt (1/2 inch wide, 106 inches long) designed for 46-inch cutting decks on Craftsman, AYP, and Poulan lawn tractors. It drives the blades from the engine pulley, and is commonly used in residential mowing.

Fitment & Compatibility

Before buying, measure your old belt’s length and width (1/2” x 106” is exact). This belt fits many 46-inch Craftsman, AYP, and Poulan models, plus specific models like Husqvarna YTH20K46, YTH2146X, and Ariens 21546607. Cross-reference your mower’s model number with OEM part 532405143 or 584453101. Not for 42-inch or 54-inch decks—verify deck size first. Aftermarket belt may vary slightly in construction from OEM; check groove depth on pulleys.

Key Things to Know

• Quality: Aftermarket belt; typically matches OEM performance for residential use. Not as durable as heavy-duty Kevlar belts for commercial mowing.
• Installation: Requires routing around deck pulleys and idler. Release belt tension by moving idler pulley—don’t force it. Refer to your deck diagram.
• Common Gotchas: Belt may be slightly stiff new; run mower for 5 minutes to seat. If it squeaks or slips, check pulley alignment and tension. Replace in pairs if other belt shows wear.
• Warranty: Usually 90-day, no OEM guarantee. Check return policy.

Should You Buy It

This belt is a solid, budget-friendly option for DIY replacement on 46-inch Craftsman/AYP/Poulan tractors. If you mow a standard residential lawn and want a direct fit without paying OEM markup, it’s a good value. For heavy commercial use or if you need exact OEM spec, consider a genuine part instead.