It is a brand new high quality head gasket for Yamaha Outboard Motor,Mercury Mariner Old series 25HP 30HP
For Yamaha Part number: 689-11181-A0 (A1/A2), 689-11181-00/02
Repair for Yamaha Outboard : 25HP, CV30, C30, 30HP series (Year 1984 - 1992)
For Mercury Mariner Outboard Parts number : 27-19138, 27-19138M, 27-84733M
It will generally fit the following Yamaha outboards: 30A (1990-92). All those Mariner outboards (30A) whose serial number starts with 689
If you are unsure, please provide your engine serial number.