580943406 Lawn Mower Grass Bag Suitable for Husqvarna Models 580943407, 580943404, 580943401, and 422517, Compatible with HU700H Models (Without Grass Catcher Frame)

What It Is

The 580943406 is a replacement grass collection bag designed for select Husqvarna walk-behind mowers, primarily the HU700H series. It captures clippings during mulching or bagging operations, but note this version does not include the grass catcher frame—you must reuse your existing frame or buy one separately.

Fitment & Compatibility

Check your mower’s model number and frame. This bag fits Husqvarna models: 580943407, 580943404, 580943401, and 422517. It is explicitly compatible with HU700H models that lack a built-in grass catcher frame. Do not buy if your mower already has an integrated frame—the bag will not attach.

Deck size isn’t the deciding factor—the bag mounts via the frame, not the deck. Measure the bag’s opening dimensions (approx. 12” x 8”) and compare to your existing frame’s hook or lip. The bag uses a plastic clip-and-hook system; confirm your frame has matching slots.

OEM vs aftermarket: This is an OEM Husqvarna part, so fit is exact for listed models. Aftermarket bags may be cheaper but often have looser fabric or misaligned clips.

Key Things to Know

• Installation is simple—snap the bag onto the frame hooks and clip the top edge. No tools needed.
• The bag holds about 2 bushels (roughly 1.5–2 standard garbage bags of clippings). Good for average lawns, but you’ll empty it often on large or wet grass.
• Common gotcha: The fabric can sag if you overfill, causing the bag to drag or detach. Empty before it’s bulging.
• Durability is decent for the price, but the zipper and seams are the weak points—avoid yanking on the bag when full.

Should You Buy It

If you own a compatible Husqvarna HU700H mower (without the frame) and need a direct OEM replacement, this bag is a reliable, no-hassle choice. It’s not for universal fit or heavy-duty commercial use, but for residential lawns and occasional bagging, it works well. Avoid if you need a frame included or have a different mower brand.