587973001(2) 587969201(1) 580364609(1) Belt Repair kit for Husqvarna AWD Belt Repair kit, Fits Model LC356VB, LC221RH, L 321AHX L, 321AH, Replaces 580364603

What It Is

This belt repair kit replaces the AWD (all-wheel drive) drive belt and pulleys on select Husqvarna walk-behind mowers. It’s designed to restore traction drive function when the original belt wears, stretches, or slips.

Fitment & Compatibility

• Exact models: Husqvarna LC356VB, LC221RH, L 321AHX, L 321AH. Also fits some variants with AWD (e.g., LC356VBA, LC221RHA) – verify your model’s suffix.
• Deck size: Works with 42-inch and 48-inch deck models that use the AWD system. Measure your existing belt length (approx. 74–76 inches) to confirm.
• OEM vs aftermarket: This is a genuine Husqvarna kit (part #587973001, 587969201, 580364609). Replaces older #580364603. Aftermarket alternatives exist but may use thinner rubber or different pulley bushings.
• What to check before buying: Ensure your mower has AWD (front wheel drive assist) – standard push or rear-wheel-drive models won’t work. Remove the old belt and compare width (½ inch) and length. Also check if your pulleys are worn or seized – the kit includes new pulleys, but you’ll need to replace them if the old ones are damaged.

Key Things to Know

• Quality: OEM Husqvarna belts use Kevlar-reinforced rubber and last longer than most aftermarket belts. Pulleys are steel with sealed bearings.
• Installation difficulty: Moderate. You’ll need to remove the deck, release belt tension (spring-loaded idler), and route the belt around all pulleys. Expect 45–60 minutes for first-timers.
• Common gotcha: The AWD belt is not the same as the blade drive belt. Many owners accidentally buy the wrong one. The AWD belt is wider and runs on separate pulleys under the machine.
• Tip: If your mower is more than 5 years old, replace both pulleys in the kit – worn pulleys will quickly eat a new belt.

Should You Buy It

If your Husqvarna AWD mower has lost traction, slips, or the belt is frayed, this kit is the correct OEM fix. It’s worth the price over cheaper aftermarket belts because it includes matched pulleys and a belt built to factory specs. Skip it if your pulleys are fine and you just need a belt – you can buy the belt alone for less.