SuperDi 580364609 580364605 Lawn Mower Belt （3/8" x 63.5" Compatible with Husqvarna Craftsman Poulan Walk-Behind Mower Replace Number 590000301 LC221A LC221AH L321AHE LFC221A L221A

What It Is

This is a replacement drive belt for walk-behind lawn mowers, specifically designed to transfer power from the engine pulley to the blade spindle. It fits select Husqvarna, Craftsman, and Poulan models with 21-22 inch decks, commonly used for residential lawn care.

Fitment & Compatibility

Before buying, verify three things: 1) Belt dimensions – this is 3/8" wide x 63.5" long. Measure your old belt (lay it flat, measure end-to-end) to confirm length. 2) OEM number – it replaces 590000301 and fits models like LC221A, LC221AH, L321AHE, LFC221A, L221A. 3) Deck size – compatible with 21-22 inch walk-behind decks. Not for zero-turn, riding, or commercial mowers. If your mower has a different deck width or uses a shorter/longer belt (e.g., 62" or 65"), this won’t work.

Key Things to Know

• Quality vs. OEM: Aftermarket belt (not genuine Husqvarna/Craftsman). Good for the price, but may wear slightly faster than OEM. Fine for light-to-medium use.
• Installation difficulty: Easy for DIYers – no special tools. Remove blade, belt guard, route belt around pulleys per diagram, reinstall. Takes 10-20 minutes.
• Common gotcha: Belt may be slightly tight on first install. If it won’t fit, double-check routing or loosen tensioner. Do not force – can damage pulleys.
• Check pulley condition: Before installing, inspect all pulleys for damage, rust, or wobble. Worn pulleys will shred a new belt quickly.

Should You Buy It

If you own a compatible Husqvarna, Craftsman, or Poulan walk-behind mower (21-22" deck) and need a budget-friendly replacement for light residential use, this belt is a solid value at $10.38. It won’t match OEM durability for heavy commercial mowing, but for home lawns it’ll get the job done. Avoid if you need a genuine OEM part for warranty or commercial use.