2 pack 587973001 Pulley with 587969201 Idler Pulley Replaces Husqvarna 5803643-01, 580364301, 596856601, 596856602, 5819040-01, 581904001 for Husqvarna LC221A L221A L321AH LC356AWD Lawn Mowers

What It Is

This is a 2-pack replacement pulley set (one blade drive pulley, one idler pulley) designed for Husqvarna walk-behind mowers. It transfers belt tension and drives the blade engagement on select LC/L series models.

Fitment & Compatibility

• Check your deck size: Fits Husqvarna LC221A, L221A, L321AH, and LC356AWD models (typically 21-22 inch decks).
• OEM cross-reference: Replaces Husqvarna 5803643-01, 580364301, 596856601, 596856602, 5819040-01, 581904001.
• Measurements: Outer diameter of the blade pulley is ~4.5 inches; idler pulley is ~3.5 inches. Verify your existing pulley diameter and shaft hole size (typically 5/8 inch or 3/4 inch).
• Brand note: This is an aftermarket set, not OEM Husqvarna. Confirm your model’s deck part diagram to ensure it matches the two-pulley configuration.

Key Things to Know

• Installation difficulty: Moderate. Requires removing the belt guard and belt, then loosening a center bolt on each pulley. Have a socket set and a breaker bar ready.
• Common gotcha: The idler pulley bearing is sealed and non-serviceable—if it feels rough or noisy, replace immediately. Don’t try to repack it.
• Belt compatibility: These pulleys work with standard OEM belts (e.g., 532 42 82-01). If your belt is worn, replace it at the same time.
• Durability: Aftermarket steel pulleys are fine for residential use, but may wear faster than OEM on heavy or commercial-duty mowing.

Should You Buy It

If you need a quick, affordable fix for a worn or noisy pulley on a Husqvarna LC221A or similar walk-behind, this 2-pack is a solid value. It’s not for commercial use, but for a single-season residential mower, it’ll get you cutting again without breaking the bank.