Splined Drive Coupling Ring / Damper Plate Insert - Used

Application: Splined drive coupling ring / damper plate insert suitable for marine transmission damper assemblies, PTO couplers, or industrial flexible coupling elements. Approximately 6 in OD with an 8-bolt outer pattern and internally splined ID, ~3/8 in thick. No manufacturer part number visible. Condition: Used take-off. Light surface rust and marking paint present; internal splines appear serviceable with no visible cracks or chipping. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.