Fitment first · Trimmer · SKU B0F8PS7ZKL

HT-21-401-002-04 HT10-401-002-01 Spool

HT-21-401-002-04 HT10-401-002-01 Spool for Hyper Tough13in 4.6-Amp Electric String Trimmer HT18-401-004-01 Spools Coils for Worx WG116 WG119 4.0 Amp Electric…

Live marketplace price $21
Buyer rating 4.6 / 5
Check price

Compatibility checkpoint

Verify this before you buy

2 listed model matches
1 Match the machine model

Compare the model printed on your trimmer label with the fitment list below.

2 Confirm the line and spool spec

pre-wound spool

3 Check the part code

Match part B0F8PS7ZKL or ASIN B0F8PS7ZKL against the listing and your old part.

Listed model matches
Hyper Tough13in 4.6-Amp Electric String Trimmer HT18-401-004-01 Spools CoilsWorx WG116 WG119 4.0 Amp Electric 12" String Trimmer & Edger
Equipment brandWorx
ReplacesB0F8PS7ZKL
Spool typepre-wound spool
CategoryTrimmer
ConditionNew aftermarket replacement

Overview

Keep your string trimmer ready for action with this pre-wound replacement spool. It is built to the same dimensions as the OEM spool, so it drops right into the trimmer head with no modifications. Aftermarket spools provide the same cutting performance as factory originals at a better value.

Key specifications

  • Pre-wound replacement trimmer spool
  • Direct-fit for listed trimmer models
  • Bump-feed compatible winding pattern

Compatibility

This spool is designed for Hyper Tough string trimmers as listed above. Confirm the spool part number, line diameter, and trimmer model before ordering to ensure a proper fit.

Installation notes

Remove the spool cover from the trimmer head. Extract the old spool and clean out any grass or debris. Insert the new pre-wound spool, feed the line ends through the guide holes, and reattach the cover. Verify the line extends the correct length before trimming.

Common questions

Q: Will this HT-21-401-002-04 / HT10-401-002-01 spool fit my Hyper Tough HT18-401-004-01 13-inch 4.6-Amp electric string trimmer?

Yes, this spool is intended to fit the Hyper Tough HT18-401-004-01 13-inch 4.6-Amp electric string trimmer. It is also listed as compatible with Worx WG116 and WG119 electric trimmer/edger models, but it’s always smart to match the spool number on your original part before installing.

Q: Can I use this spool on a Worx WG119 12-inch 4.0 Amp trimmer/edger, and do I need to change the cap too?

This spool is compatible with the Worx WG119 and WG116 models listed, as long as your existing spool cap and housing are not cracked or excessively worn. In most cases you can reuse your current cap, but if the line does not feed smoothly after installation, inspect the cap tabs and spool holder for wear.

Q: What’s the correct way to install this replacement spool so the line feeds properly?

Unplug the trimmer first, then remove the spool cap, lift out the old spool, and clear any grass or debris from the housing before inserting the new one. Make sure the line end is threaded through the eyelet correctly and the spool sits fully in place; if it’s installed backwards or the line is pinched, it may not advance smoothly during use.

Compatibility

This page lists compatible equipment gathered from the product fitment data. Always confirm the model number stamped on your machine before ordering.

Hyper Tough13in 4.6-Amp Electric String Trimmer HT18-401-004-01 Spools CoilsWorx WG116 WG119 4.0 Amp Electric 12" String Trimmer & Edger

Not sure which spool you need? See our guide: How to wind a trimmer spool or How to measure your old spool.

Before you buy — how to verify fitment

  1. Find your trimmer model number. It's usually on a label on the motor housing, battery slot, or lower shaft.
  2. Check spool compatibility. Compare the model number with the compatibility list above.
  3. Verify line gauge. Confirm the line thickness matches what your trimmer head requires by checking your manual or the old spool.
  4. Inspect the spool housing. Make sure the spool diameter, cap, spring post, and feed style match your trimmer head.

Frequently asked questions

How do I know this spool fits my trimmer?

Check your trimmer model number against the compatibility list above. Then verify the line gauge (.065, .080, .095) matches what your trimmer head requires — it's usually printed on the spool cap or in the manual.

Can I rewind a pre-wound spool?

Yes. Once the factory line runs out, you can rewind the spool with bulk trimmer line of the same gauge. Pre-wound spools just save time on the first load.

How often should I replace the spool?

Replace the spool when the line no longer feeds properly, the spring loses tension, or the spool body is cracked. Under normal weekend use, a spool lasts 2–4 refills before the housing wears out.

What gauge trimmer line should I use?

Match the gauge to your trimmer's power: .065" for light-duty electric trimmers, .080" for mid-range cordless, and .095" for gas-powered or heavy-duty models. Using too thick a line can stall the motor.

Where to buy

This part is available through Amazon with free returns on most orders. Use the fitment details above to compare your model, old part number, and physical specs before ordering.

Check current price on Amazon

Affiliate disclosure: we may earn a commission when you purchase through this link, at no extra cost to you.

§ Compare

Similar Trimmer parts

§ Guides

Related how-to guides