Alpha 1 & Gen. 2 Outdrive Parts *Drawings *Videos
Mercruiser Alpha One Stern Drive Insert Screen - Port
Port Side Outdrive Lower Unit Insert Screen
GLM P/N 21880Replaces Mercury OEM 93424-1Installed into the left (port) side of the lower unitPlastic
insert screen compatible with MR / Alpha 1 up to 1990 only
Exploded view Mercruiser drawingsSearch by part number or description here
21880 port screen
P/N 21880 Insert (port) $4.29
Customers who ordered P/N 21880 also purchased:
P/N 87510 Seal and gasket it for the Mercruiser lower unit. Compatible with 1970 - 1990 models. Replaces OEM 26-33144A2. $35.15
P/N 39622 Gasket kit - fits between the outdrive and bell housing. Use gasket sealing compound (available below) on both sides of gasket.
Replaces OEM 27-94996A2. $6.15
P/N 317201 Large gasket sealant (includes brush inside lid). 16 ounce. $24.15 *Smaller
size also available
Copyright 2017 T.C. Electronics/Marine (416) 751-7326All rights reserved.