Mercruiser Alpha One Outdrive Insert Screen

Alpha One & Gen 2 Outdrive Parts *Drawings *Videos

Mercruiser Alpha One Outdrive Insert Screen

Mercruiser Stern Drive Lower Unit Starboard Insert Screen

GLM P/N 21870 replaces OEM 93423-1
Compatible with the MC-1, R, MR and Alpha Gen 1 models up to 1990
Port and starboard sides available
Exploded view Mercruiser drawings
Search by part number or description here

21870 Starboard insert screen Alpha one 93423-1

21870 Insert Screen Alpha One 93423-1

P/N 21870 Insert (stbd) $5.99

Customers who ordered P/N 21870 also purchased:

21880 insert screen

21880 Port Mercruiser Lower Unit 93424-1

P/N 21880 Port side - insert screen. Compatible with 1970 - 1990 models. Replaces OEM 21880. $4.95

87510 Seal Kit 26-33144A2

87510 Seal Kit 26-33144A2

P/N 87510 complete gasket and seal kit for the lower unit. Compatible with 1970 - 1990 models. Replaces OEM 26-33144A2. $42.95

39622 OMC Bell housing gasket kit

39622 OMC Bell housing gasket kit

P/N 39622 Stern drive bell housing gasket kit. Make sure to use a gasket sealing compound (available below). Replaces OEM 27-94996A2. $9.95

317201 Large Sealant-Johnson

317201 Large Sealant-Johnson

P/N 508235 Small gasket sealant 4 ounce. $24.95