3 Pack Trimmer Head Spools with 1 Cover Kit for Stihl FSA 57 FSE 52 Weed Eater String Autocut C3-2 Trimmer Head Replace Parts 4009 710 4305

What It Is

This is a 3-pack of replacement trimmer spools and a cover kit designed for Stihl’s Autocut C3-2 trimmer head. It fits battery-powered models like the FSA 57 and FSE 52, giving you pre-wound string spools to reload quickly without manual winding.

Fitment & Compatibility

• Exact models: Stihl FSA 57, FSE 52, and any trimmer using the Autocut C3-2 head (check your head for “C3-2” markings).
• OEM part cross-reference: Replaces Stihl part number 4009 710 4305 (cover) and the spool assembly.
• What to measure: Spool diameter is ~3.1 inches (80mm) – compare to your current spool. String diameter is 0.095 inches (2.4mm) – verify your trimmer head accepts this thickness.
• Before buying: Confirm your trimmer head is the Autocut C3-2, not the C3-1 or C3-3. The cover kit includes the cap and spring; if your original cap is cracked, this will fix it.

Key Things to Know

• Quality: Aftermarket spools are typically nylon but may be slightly less durable than OEM Stihl spools. Expect normal wear for residential use.
• Installation: Easy – pop off the old cover, remove empty spool, drop in new spool, and snap cover back. No tools needed.
• Common gotcha: The pre-wound string may have a slight twist – straighten it before loading to avoid tangling. Also, ensure the cover clicks fully into place to prevent the string from ejecting during use.
• String length: Each spool holds about 20 feet of string – enough for several trims before needing replacement.

Should You Buy It

If you own a Stihl FSA 57 or FSE 52 and want a cheap, convenient way to keep spare spools on hand, this 3-pack is a solid value. It’s best for light to medium residential trimming. For heavy commercial use, stick with OEM spools, but for homeowners, this aftermarket set works fine and saves money.