RYOBI P549 replacement chain and bar size
Verified factory configuration for the ONE+ 18V model/configuration.
Factory configuration
- Bar length
- 12 in
- Pitch
- 3/8
- Gauge
- 0.043 in
- Drive links
- 45
- OEM chain
- RY12C1
- OEM bar
- Not published in source
Configuration and revision caveat
P549 kit contains the 12-inch saw; discontinued product page currently links the RY12C1 replacement chain; verify installed bar stamp
Replacement chain check for the RYOBI P549
Start with the factory configuration above: 12 in bar, 3/8 pitch, 0.043 gauge, and 45 drive links. The cited OEM chain part is RY12C1. This applies only to the cited configuration; P549 kit contains the 12-inch saw; discontinued product page currently links the RY12C1 replacement chain; verify installed bar stamp
- Remove the battery and read the installed guide-bar stamp.
- Match pitch, gauge, and drive-link count to this page.
- If the bar has been replaced or its stamp differs, stop and use the installed-bar specifications instead.
How we verified this
Opened manufacturer product HTML; embedded Specifications state chain size 12 in, drive links 45, chain gauge .043, chain pitch 3/8; related-products block identifies RY12C1
Open manufacturer source (manufacturer product specification; checked 2026-08-12).
See models with this exact pitch, gauge and drive-link signature