Sierra’s 18-1233 Timing Cover Seal is designed for use in marine applications. It is interchangeable with Mallory 9-61612, Mercury Stern Drive 26-49154, 26-821947, 26-8219471, FI1100986, OMC Inboard 3860095, and OMC Stern Drive 3860095. Each Sierra product meets or exceeds the original equipment part it replaces.
Designed for use in marine applications
Interchangeable with Mallory 9-61612, Mercury Stern Drive 26-49154, 26-821947, 26-8219471, FI1100986, OMC Inboard 3860095, and OMC Stern Drive 3860095
Includes one gasket per package
Each Sierra product meets or exceeds the original equipment part it replaces








