20 Pack WA0050 Replacement Flex-A-Line 13" Line for Worx WG430 Electric Leaf Mulcher 50018961, Flex-A-Line WG430 WA0050 Leaf Mulcher

What It Is

This 20-pack of WA0050 replacement Flex-A-Line 13-inch trimmer line is designed specifically for the Worx WG430 electric leaf mulcher (model 50018961). It replaces the OEM Flex-A-Line WG430 line, providing the flexible, non-abrasive cutting action needed for mulching leaves and light debris without damaging the mulcher’s impeller blades.

Fitment & Compatibility

Before buying, confirm your machine is a Worx WG430 (check the model number on the underside or near the motor housing). This line is 13 inches long—measure your existing line to ensure it matches; the WG430 uses exactly this length. It’s an aftermarket replacement for OEM part WA0050, so it fits the same line-retention system (no trimming required). Do not use this on string trimmers or other mulchers—it’s only compatible with the WG430’s specific line-retention slots.

Key Things to Know

• Quality: At 3.8 stars from only 4 reviews, feedback is limited. The line is thinner and more flexible than standard trimmer line, which is intentional for leaf mulching—but it may wear faster on tougher debris.
• Installation: Very easy—no tools needed. Just push the line into the retention slots on the mulcher’s impeller. Ensure each line is fully seated and centered to avoid imbalance.
• Common gotcha: The 20-pack gives you extras, but each line is single-use. If you mulch thick or wet leaves, you’ll go through them faster than expected. Keep spares handy.
• No other use: Don’t try to substitute standard trimmer line—it’s too stiff and can damage the mulcher’s plastic housing.

Should You Buy It

If you own a Worx WG430 and need a cost-effective, direct replacement for worn-out Flex-A-Line, this pack is a solid buy—just stock up, as the 20-pack may not last a full season of heavy mulching. The limited reviews and thin construction mean it’s best for light-duty leaf mulching, not heavy debris.