

Genuine Mercruiser 27-42631 1 Water Pump Gasket
Genuine Mercruiser 27-817277 1 Alpha 1 Gen 2 Water Pump Housing Gasket
Replacement Mercrusier A1G2 and Mercury outboard with big foot lower gear case water pump housing mounting gasket.
Replaces - 30290, 18-2566 and 9-60023 and 817277-1