Water Cooled Regulator Seal, Mercury

Water Cooled Regulator Seal. For Mercury Marine (1989-1994). Replaces Mercury 18717. Premium Quality For Longer Life. Meets or exceeds manufacturer's recommended specifications. Backed by Sierra's limited lifetime warranty. For Mercury Marine (1989-1994) Replaces Mercury 18717 Premium Quality For Longer Life Meets or exceeds manufacturer's recommended specifications Backed by Sierra's limited lifetime warranty