577049301 - Trimmer head replacement knob (T25-Battery trimmer)

The Husqvarna T25 Replacement Knob (Part #: 577049301) is a genuine OEM component specifically designed for the T25 trimmer head used on Husqvarna battery-powered string trimmers. This knob secures the trimmer line spool within the head and allows for smooth, reliable Tap Advance line feeding during operation.

If your existing knob is cracked, worn, or lost, this replacement restores proper spool function—keeping your trimmer running efficiently and safely.

Compatible Equipment Examples:

• Husqvarna 115iL Battery Trimmer

• Husqvarna 520iLX Battery Trimmer

• Other models using the T25 trimmer head (battery versions only)

Features:

• Genuine Husqvarna Trimmer Head Replacement Knob

• Part #: 577049301

• Designed for T25 trimmer heads on battery-powered models

• Ensures proper spool retention and line feed functionality

• Durable plastic construction with OEM fit

• Easy to install for fast, tool-free replacement

• Ideal for regular wear or repair maintenance

Bee Green in Oakland is your trusted Husqvarna dealer, proudly serving the Bay Area with OEM trimmer parts, battery tool accessories, and expert support for landscaping professionals and homeowners alike.