Alpha 1 & Gen. 2 Outdrive Parts *Drawings *Videos
Mercruiser Alpha One outdrive cover nut
Cover Nut Part - Installs into lower Gearcase
P/N 21120 Cover nut is used to hold the bearing carrier in place in the lower unitReplaces OEM 79448Mercruiser
tool # 90190 (OEM 91-61069T) bearing carrier retainer wrench will be required to remove and install this nut
Tech support exploded view Alpha One drawingsSearch by part number or description here
21120 cover nut
P/N 21120 Cover nut OEM 79448 $18.29
Customer who bought P/N 21120 also purchased:
P/N 87500 Mercruiser / Alpha 1 Gen 1, 1970 - 1990 upper gearcase seal kit. Replaces Mercury 26-32511A1.
P/N 87501 Alpha 1 Gen 2, 1991 and up upper housing gasket/seal kit. Replaces Mercury 26-88397A1. $20.15
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