O-Ring (5 Pk), Mercury/OMC

O-Ring. Package of 5. I.D.: 4.000" or 101.6mm. Width: 0.100" or 2.5mm. Meets or exceeds manufacturer's recommended specifications. Backed by Sierra's limited lifetime warranty. Package of 5 I.D.: 4.000" or 101.6mm Width: 0.100" or 2.5mm Meets or exceeds manufacturer's recommended specifications Backed by Sierra's limited lifetime warranty