Mercruiser parts warehouse / stern drive drawings
Mercruiser water pump impeller nuts
Mercruiser lower unit water pump nuts
GLM marine aftermarket nuts are made from stainless steel material # 21180 ( OEM # 11-826711-9 ) # 21190 ( OEM # 11-45592 ) Aftermarket Mercruiser nuts used to hold down water pump base
#21180 $4.98 (5 units)
Please see lower gearcase drawing part # 7
#21190 $9.98 (5 units)
Please see lower gearcase drawing part # 11
omc@sterndrive.info