Fitment first · Trimmer · SKU B0CSFD47LR

18 Inch Chainsaw Bar

18 Inch Chainsaw Bar, Replacement Chainsaw Blade for EGO CS1800 CS1803 CS1804 CS1804-2, for Oregon CS1500, for Greenworks CS60L4R3, for RYOBI RY3818, for WEN…

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Compatibility checkpoint

Verify this before you buy

7 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 B0CSFD47LR or ASIN B0CSFD47LR against the listing and your old part.

Listed model matches
EGO CS1800 CS1803 CS1804 CS1804-2Oregon CS1500Greenworks CS60L4R3RYOBI RY3818WEN 4118Echo CS-400-188LP 050 62DL)
Equipment brandRyobi, Greenworks, EGO, Echo
ReplacesB0CSFD47LR
Spool typebar & chain
CategoryTrimmer
ConditionNew aftermarket replacement

Overview

Packaged as a matched set, this 18” guide bar and chain combo delivers factory-level cutting performance as an aftermarket replacement. When either the bar or chain shows significant wear, the best practice is to replace both simultaneously. This combo simplifies the process and guarantees proper fitment between the two components.

Key specifications

  • 18” guide bar and chain combo
  • Matched bar and chain for optimal tracking
  • Low-kickback design for safer operation

Compatibility

This combo set is designed for EGO chainsaws as listed above. Verify bar length, pitch, gauge, and drive link count match your saw’s requirements before purchasing.

Installation notes

Disconnect power or remove the spark plug wire before working on the cutting assembly. Fit the new bar onto the mounting studs, wrap the chain around the nose sprocket and drive sprocket, and tension according to the owner’s manual. Always check chain direction: cutters on the top should face away from the body of the saw.

Common questions

Q: Will this 18 inch bar fit my EGO CS1804-2, and do I need a specific chain size with it?

Yes, this bar is listed as compatible with the EGO CS1804-2. It uses the 3/8LP pitch, .050 gauge, and 62 drive links, so your replacement chain needs to match all three of those specs for proper fit and safe operation.

Q: Can I use this bar on my Oregon CS1500 if my old bar is 18 inches but the chain seems loose?

It is compatible with the Oregon CS1500, but chain looseness usually means the chain specs or tension are off rather than the bar length alone. Make sure you’re using a 3/8 low-profile, .050 gauge, 62 drive link chain and then adjust tension so the chain seats in the bar groove but still pulls around by hand.

Q: What should I check when installing this bar on a Greenworks CS60L4R3 or Echo CS-400-18?

Before installing, clean the bar mount area, oil port, and sprocket area so the new bar can oil properly and sit flat. After installation, confirm the chain direction is correct, tension the 62DL chain properly, and recheck tension again after the first few cuts since a new chain can stretch slightly.

Compatibility

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

EGO CS1800 CS1803 CS1804 CS1804-2Oregon CS1500Greenworks CS60L4R3RYOBI RY3818WEN 4118Echo CS-400-188LP 050 62DL)

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.

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