The Sierra 18-7408-9 O-Ring is interchangeable with GLM 81210, Evinrude/Johnson 911718, and OMC 911718. It features an ID of 1.060″ (27mm) and a width of 0.100″ (2.5mm). Package includes five O-rings. Each Sierra product meets or exceeds the original equipment part it replaces.
I.D.: 1.060″ (27mm)
Width: 0.100″ (2.5mm)
Interchangeable with GLM 81210, Evinrude/Johnson 911718, and OMC 911718
Each package includes five O-rings