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Mercruiser water pump housing screw

Lower unit stainless steel water pump housing screw

  • GLM marine aftermarket number P/N 12821 made from stainless steel material
  • OEM 10-30720 Aftermarket Mercruiser screw used to hold down water pump cover
  • Tech support Exploded view drawings

12821 screw

12821 screw

P/N 12821 Water pump screw $4.89

Customers who viewed this item all so
purchased one of the following:

89840 Impeller Mercruiser water pump 1967-1990 OEM 47-89984T4
89840 Impeller Mercruiser water pump 1967-1990 OEM 47-89984T4
P/N GLM 89840 OEM 47-89984-2 impeller $17.00
MC-1 / R / Alpha 1 (1967 - 1990)

12110 Water Pump Impeller Kit Mercruiser
12110 Water Pump Impeller Kit Mercruiser
P/N 12110 OEM N/A Water pump kit $41.00

Our kit includes the impeller key P/N 11070 OEM 28-56654. Most competitor kits do not include the key.

88010 Upper Lower Mercruiser Parts

88010 Upper Lower Mercruiser Parts

P/N 88010 Outdrive service kit for MC-1/R 1970 - 1983 $99.00