O-Ring (Pkg of 2), ID: 0.74", W: 0.31"

O-Ring. For Mercruiser Stern Drive, and Mercury Marine/Sport Jet. I.D.: 0.740" or 18.8mm. Width: 0.310" or 7.9mm. Package of 2. Premium Quality For Longer Life. Meets or exceeds manufacturer's recommended specifications. Backed by Sierra's limited lifetime warranty. I.D.: 0.740" or 18.8mm Width: 0.310" or 7.9mm Package of 2 Premium Quality For Longer Life Meets or exceeds manufacturer's recommended specifications Backed by Sierra's limited lifetime warranty