MightyRugged 21546607 Replacement Belt for Husqvarna, Ariens (1/2x106 1/8) Compatible with Ariens/AYP: 46inches Deck, 2007, Fits Husqvarna: 2246LS, 2346XLS, YTH20K46, YTH2146XP and YTH2246

What It Is

The MightyRugged 21546607 is a replacement drive belt for 46-inch deck lawn tractors from Husqvarna and Ariens/AYP. It transfers power from the engine to the mower deck blades, and is commonly used on mid-2000s to early-2010s models.

Fitment & Compatibility

• Deck size: Only for 46-inch cutting decks. Measure your deck or check your model number.
• Belt dimensions: 1/2 inch wide, 106 1/8 inches long. Verify your old belt’s length—slight variations can cause slipping or poor engagement.
• Brands/models: Fits Husqvarna YTH20K46, YTH2146XP, YTH2246, 2246LS, 2346XLS, and Ariens/AYP 46-inch decks from 2007.
• OEM vs aftermarket: This is a direct replacement for OEM part 21546607. It is not a universal belt—don’t substitute for different deck sizes or brands without cross-referencing.
• Check before buying: Look up your mower’s model number (usually under seat or on frame). Confirm belt routing diagram is the same as your original.

Key Things to Know

• Quality: 4.3 stars from 5,824 reviews suggests good durability for residential use. Some users report shorter life on heavy-duty commercial jobs.
• Installation: Moderate difficulty—requires removing deck or belt covers, routing around pulleys, and tensioning. A diagram or video helps.
• Common gotcha: Belt may appear slightly tight initially; it will seat after a few minutes of run time. Do not force it over pulleys.
• Tip: Replace the belt and check pulley bearings at the same time to avoid premature wear.

Should You Buy It

If you own one of the listed Husqvarna or Ariens 46-inch models and need a reliable, budget-friendly replacement for residential mowing, this belt is a solid choice. It’s not for commercial use or non-standard decks, but for typical lawn care it offers good value and proven fitment.