320943 OMC GROMMET

Factory impeller housing grommet (320943) for Johnson Evinrude water pump assemblies on V4, V6, and V8 engines. This rubber seal isolates the impeller housing from the exhaust passage and prevents coolant leakage in the cooling system. Commonly included in water pump repair kits alongside impellers, gaskets, and o-rings. Equivalent to Sierra 18-2704, SEI 95-305-09, and other aftermarket alternatives. Priced around $11.15 from marine suppliers.