YWTESCH 4 Pack String Trimmer Replacement Spool Cap for Greenworks, Weed Wacker String Parts Trimmer Line Cap Covers Compatible with Greenworks Cordless Weed Eater

What It Is

This is a 4-pack of replacement spool caps for string trimmers, designed to secure the cutting line spool inside the trimmer head. It’s specifically intended for Greenworks cordless weed eaters that use a bump-feed or fixed-line head.

Fitment & Compatibility

• Brand-specific: Only confirmed for Greenworks cordless trimmers (e.g., 20V, 40V, 80V models). Not for gas-powered or other brands.
• Check your model number: Common compatible models include 21212, 21213, 21214, 21062, 21072, 21142, 21162, and 29022. Verify your trimmer’s model number on the underside of the head or in the manual.
• Measurements: Cap diameter is approximately 1.5 inches (38mm). Measure your existing cap’s diameter and locking tab width to confirm.
• OEM vs aftermarket: This is an aftermarket part, not Greenworks OEM. It may fit slightly tighter or looser than the original.
• What to check before buying: Ensure your trimmer uses a spool with a center post (not a single-line or speed-feed head). If your cap has a different locking mechanism (e.g., twist-lock vs. snap-on), this won’t work.

Key Things to Know

• Quality: Plastic is decent but thinner than OEM. Expect them to crack or wear out faster under heavy use or impacts with hard surfaces.
• Installation: Easy – remove old cap, snap new one on. No tools needed. Make sure the spool line feeds through the cap’s slots before snapping it shut.
• Common gotcha: The caps may not seat perfectly flush on all models. If they pop off during use, try rotating the cap 180 degrees or lightly sanding the inner rim.
• Value: At ~$2 each, these are a budget fix for lost or broken caps, but not a long-term upgrade.

Should You Buy It

Buy this if you need a quick, cheap replacement for a lost or cracked cap on a Greenworks cordless trimmer and don’t mind slightly lower durability. Skip it if you want OEM fit/finish, have a gas-powered trimmer, or need caps for a different brand.