Mercruiser Outdrive Parts Drawings *How to Videos

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Mercruiser water pump washer *Lower unit part

GLM Marine aftermarket water pump washer
years 1972 to 1991

  • GLM marine product number 21490
  • Stainless steel washers come in units of ten
  • Four washers are included in water pump kits
  • Washers used to hold down water pump housing

21490

21490

# 12 in lower gear case drawing

21720

21720


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

88010 Water pump outdrive seal kit

88010 Water pump outdrive seal kit

P/N 88010 Housing, impeller, outdrive upper and lower seal sets $99.00
Compatible with models 1 and R. Years 1970 to 1983 serial numbers 2663442 - 6225576

12110 Water pump kit MC 1 R 1970-1983

12110 Water pump kit MC 1 R 1970-1983

P/N 12110 for 1970 - 1983 models, serial numbers 2763442 - 6854392 $41.00

Mercruiser MC-1 / R years 1970 - 1983
Serial numbers 2763442 - 6854392
Includes:
P/N 89840 / 47-89984T4 Impeller
P/N 11070 / 28-56654 Key
P/N 12410 / 46-96148T1 Pump housing
P/N 12310 / 46-57234T1 Pump base
P/N 12820 / 23-29804T Guide tube
P/N 12810 / 48752 Cup
P/N 12510 / 32435 Wear plate
P/N 31010 / 27-85608-1 Gasket

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)