8" replacement chain for RYOBI and WORX.

If you need an 8-inch replacement chain for select RYOBI and WORX pruning and compact chainsaws, this chain matches a range of listed models using an 8-inch bar setup. It is also listed for certain Homelite, Makita, and Poulan saws that use the same chain size and cutting specifications.

Will this chain fit your saw?

This chain fits only if your saw uses all of these chain specifications:

• Bar length: 8 inches
• Pitch: 3/8 inch
• Gauge: .043 inch
• Drive links: 33

Those four measurements matter more than brand name alone. Even if two saws both use an 8-inch bar, the chain still has to match the pitch, gauge, and drive-link count exactly to fit and run correctly. If one of those numbers is different, the chain may be too loose, too tight, or incompatible with the bar and drive sprocket.

Compatible models from the original listing are:

• RYOBI: P4360, RY43160, RY43160A, P4360BTL, P4361, ZRP4361
• RYOBI (Chainsaw): P2501BTL, P5452BTL, P5453, P2580, P2508BTL
• Worx: WG349.9, WG349
• Homelite: UT43160 / ZR43160
• Makita: XCU05
• Poulan: 810EPT

A quick fitment check is to compare your current chain or your bar markings against the specs above. Look for 3/8 pitch, .043 gauge, and 33 drive links. If your saw is one of the listed models and those measurements match, this is the correct size chain.

Replacing the chain

Before starting, remove the battery or disconnect power so the saw cannot start accidentally. Wear gloves when handling the old or new chain.

1. Remove the side cover and loosen the bar so the old chain can come off easily.
2. Take off the old chain and clean sawdust and debris from the bar groove and sprocket area.
3. Install the new chain around the drive sprocket and onto the bar, making sure the cutter direction matches the normal forward cutting direction on the top of the bar.
4. Reinstall the side cover and adjust chain tension until the chain sits snugly in the bar groove but can still be pulled around by hand.
5. Tighten the cover securely, then recheck tension after a brief test run, since a new chain can settle in quickly.

Do not run the chain overly loose, as it can derail. Do not overtighten it either, because that increases wear on the bar, chain, and motor.

Keeping it sharp

A sharp chain cuts faster, puts less strain on the saw, and is safer to use than a dull one.

• Keep the chain properly tensioned and check it often, especially during the first few cuts with a new chain.
• Avoid letting the chain contact dirt, rocks, or concrete, which can dull cutters almost immediately.
• If cutting starts to require pressure instead of the chain feeding naturally, it is time to sharpen or replace the chain.

Good lubrication also helps reduce heat and wear. Always follow your saw’s maintenance recommendations for chain and bar care.

FAQ

Will this fit every 8-inch chainsaw?

No. An 8-inch bar alone is not enough to confirm fit. Your saw must also use a 3/8-inch pitch, .043-inch gauge, and 33-drive-link chain.

How do I verify the chain size on my saw?

Check the markings on the bar, the owner’s manual, or the existing chain packaging if you still have it. Match all four specs: 8-inch bar, 3/8 pitch, .043 gauge, and 33 drive links.