Husqvarna 966674401 T25 Tap Advance String Trimmer Head, Weed Eater Attachments 100-200 Series, Prewound with .095-Inch Trimmer Line, Black, Gifts for Men

What It Is

The Husqvarna 966674401 T25 is a bump-feed, Tap Advance trimmer head prewound with .095-inch line. It’s designed for Husqvarna weed eaters and other trimmers using 100-200 series attachments, making it a direct replacement for worn-out heads on residential-grade machines.

Fitment & Compatibility

Before buying, confirm your trimmer uses a 100-200 series attachment (common on Husqvarna 128LD, 129L, 130C, 322L, 324L, 325LD, and many Craftsman/Weed Eater models with similar shaft diameters). Measure the drive shaft diameter (should be 0.250 inches) and shaft hole size (0.375 inches). This head is OEM Husqvarna, not aftermarket, so it fits Husqvarna-branded trimmers and any unit that accepts Husqvarna 100-200 series heads. It does not fit 300-series or larger professional trimmers. Check your owner’s manual or existing head model for “T25” or “Tap Advance” markings.

Key Things to Do

• Pre-wound convenience – Comes with .095-inch line installed, so no winding or cutting needed; just snap on and tap.
• Easy installation – No tools required; uses a quick-release knob that slides onto the shaft and locks in place. Remove old head, align tabs, twist to secure.
• Bump-feed reliability – Tap the head on the ground to advance line; works well but can jam if line is too long or if you tap too hard. Keep line length to about 4-6 inches after trimming.
• Line thickness – .095-inch is a good balance for light-to-medium weeds and grass. Thicker line (.105) won’t fit this head; stick with .080 to .095 for best performance.

Should You Buy It

If you own a Husqvarna 100-200 series trimmer and want a drop-in replacement that’s prewound and fuss-free, this is a solid choice. It’s reliable for residential use—clearing edges, light brush, and regular grass. Skip it if you have a heavy-duty commercial trimmer or need a head that accepts thicker line.