EGO CS1604 replacement chain and bar size
Verified factory configuration for the 56V ARC Lithium model/configuration.
Factory configuration
- Bar length
- 16 in
- Pitch
- 3/8 low profile
- Gauge
- 0.043 in
- Drive links
- 56
- OEM chain
- Not published in source
- OEM bar
- Not published in source
Configuration and revision caveat
Factory 16-inch kit configuration in the 2026 US catalog; verify installed bar
Replacement chain check for the EGO CS1604
Start with the factory configuration above: 16 in bar, 3/8 low profile pitch, 0.043 gauge, and 56 drive links. The manufacturer source does not publish an OEM chain part number for this configuration. This applies only to the cited configuration; Factory 16-inch kit configuration in the 2026 US catalog; verify installed bar
- 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 2026 catalog; printed pages 38-39/PDF page 20 comparison chart states CS1604: 16 in, 3/8 LP, .043, 56 DL
Open manufacturer source (manufacturer catalog; checked 2026-08-12).
See models with this exact pitch, gauge and drive-link signature