Fitment first · Trimmer · SKU B0FV91FQ5M

18 in Replacement Chainsaw chain

18 in Replacement Chainsaw chain for troybilt TB4218 TB4218XP 41AY4218766 Gas Chainsaw/Chain For Poulan Pro 4218/PR 4218 /4218A/Poulan Wild Thing 2375/2000/P…

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Compatibility checkpoint

Verify this before you buy

9 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

bar & chain

3 Check the part code

Match part B0FV91FQ5M or ASIN B0FV91FQ5M against the listing and your old part.

Listed model matches
troybilt TB4218 TB4218XP 41AY4218766 Gas ChainsawChainPoulan Pro 4218PR 42184218APoulan Wild Thing 23752000PP4218A 2150
Equipment brandPoulan
ReplacesB0FV91FQ5M
Spool typebar & chain
CategoryTrimmer
ConditionNew aftermarket replacement

Overview

This replacement chainsaw chain is manufactured to OEM specifications for reliable cutting performance. A dull or stretched chain forces the motor to work harder, generates excessive heat, and produces rough, uneven cuts. Installing a fresh chain restores the saw’s efficiency and reduces operator fatigue.

Key specifications

  • Replacement chainsaw chain
  • Pre-sharpened cutters ready for immediate use
  • Heat-treated for extended cutting life

Compatibility

This chain is designed to fit Poulan chainsaws and compatible models listed above. Confirm the pitch, gauge, and drive link count match your bar’s specifications before ordering.

Installation notes

Ensure the saw is off and the power source is disconnected before chain replacement. Release bar tension, remove the side cover, and slide the old chain off the bar and drive sprocket. Thread the new chain with cutters facing the correct direction, re-mount the bar, and adjust tension until there is slight play.

Common questions

Q: Will this 18 in replacement chain fit my Troy-Bilt TB4218XP or the 41AY4218766 chainsaw?

Yes, this chain is intended to fit the Troy-Bilt TB4218, TB4218XP, and model 41AY4218766 as long as your saw is using the original 18-inch bar setup. It is also listed for compatible Poulan Pro 4218/PR4218/4218A, Wild Thing 2375/2000, PP4218A 2150, and 3516AV Predator saws, but it’s still smart to confirm your current bar length and chain markings before installation.

Q: I have a Poulan Wild Thing 2375 with an 18-inch bar—can I use this chain, and do I need to replace the bar too?

If your Wild Thing 2375 is running the standard 18-inch bar configuration, this replacement chain should fit without needing a new bar. You only need to replace the bar if the groove is badly worn, the rails are uneven, or the tip sprocket is damaged, since a worn bar can cause poor cutting performance even with a new chain.

Q: What’s the best way to install and maintain this replacement chain on a Poulan Pro 4218?

Install it with the cutting teeth on the top of the bar facing forward, then adjust tension so the chain sits snugly but can still be pulled around the bar by hand with gloves on. After the first few cuts, recheck tension because a new chain can stretch slightly, and always keep the bar oil reservoir full to reduce heat and premature wear.

Compatibility

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

troybilt TB4218 TB4218XP 41AY4218766 Gas ChainsawChainPoulan Pro 4218PR 42184218APoulan Wild Thing 23752000PP4218A 21503516AV Predator Chainsaws

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

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