THTEN DWO1DT995 Replacement Head Replacement Spring Base and Cover Cap Compatible with Dewalt DCST970,DCST922,DCST990,DCST920,DCST925,DCST991 Cordless String Trimmer

What It Is

This is a replacement bump-feed head assembly for DEWALT cordless string trimmers, including the spring base and cap cover. It’s designed to reload trimmer line quickly by tapping the head on the ground.

Fitment & Compatibility

Before buying, verify your trimmer model matches this list: DCST970, DCST922, DCST990, DCST920, DCST925, or DCST991. This is an aftermarket part, not OEM DEWALT, so fitment may vary slightly on non-listed models. The head uses a standard 0.080" or 0.095" diameter trimmer line. No special tools are needed for installation, but check that the internal spring and cap align properly with your trimmer’s shaft.

Key Things to Know

• Quality vs OEM: At $8.49, this is significantly cheaper than a DEWALT OEM head. Some users report the plastic feels less durable, but it works fine for light to moderate use.
• Installation: Simple—remove the old head, slide this one on, and tighten. No disassembly of the trimmer shaft required. Takes about 5 minutes.
• Line Loading: The head accepts pre-cut line lengths or spools. Make sure to wind the line evenly to avoid jamming.
• Common Gotcha: The cap may pop off if the spring is not seated fully. Push down firmly until it clicks.

Should You Buy It

If your DEWALT trimmer’s original head is cracked, worn, or the bump-feed no longer works, this is a budget-friendly fix. It’s best for occasional home use, not for heavy commercial jobs where you need maximum durability. For the price, it’s a solid stop-gap or spare part.