Lawn Tractor Blade Holder 580954003 Compatible with Husqvarna 580954002 Lawn Tractor, Fits Model GT54CS YT42CS YT48CS YTH224 GT54LS CTH224TFI

What It Is

This is an OEM replacement blade holder (spindle assembly) for Husqvarna lawn tractors, designed to mount and rotate the mower blade. It’s intended for 42–48-inch decks on mid-to-large lawn tractors used for residential mowing.

Fitment & Compatibility

Check before buying:

• Model fitment: Confirmed for Husqvarna GT54CS, YT42CS, YT48CS, YTH224, GT54LS, CTH224TFI. Not universal—verify your model number on the tractor’s data tag (under seat or on frame).
• Deck size: Works with 42-inch and 48-inch cutting decks. Measure your deck width to confirm.
• OEM vs. aftermarket: This is an OEM Husqvarna part (replaces 580954002). Aftermarket spindles may vary in bearing quality and shaft length—stick with OEM for exact fit.
• Physical dimensions: The spindle shaft is 1-inch diameter with a 5/8-inch hex bore for the blade bolt. Pulley diameter is approximately 4.5 inches. Measure your old spindle’s shaft length and pulley offset to avoid deck clearance issues.

Key Things to Know

• Quality: OEM Husqvarna—sealed bearings and cast iron housing. Holds up well under normal residential use. Not heavy-duty for commercial mowing.
• Installation difficulty: Moderate. Requires removing the blade, belt, and mounting bolts. Need a socket set, torque wrench, and possibly a puller if the old spindle is seized.
• Common gotchas: The pulley retaining nut can be tight—use penetrating oil. Check the belt tension after installation; a misaligned pulley can cause belt wear. Reuse the original lock washers or buy new ones.
• Compatibility note: Does NOT fit zero-turn mowers or older Husqvarna models with different deck mounts (e.g., GTH series). Always cross-reference with your tractor’s parts diagram.

Should You Buy It

Buy this if you have a listed Husqvarna lawn tractor and need a direct OEM replacement for a worn or noisy spindle assembly. It’s a solid mid-priced option for residential users who want reliable fit without guessing aftermarket dimensions. Avoid if you have a different brand or a commercial mower—look for a heavy-duty aftermarket spindle instead.