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Mercruiser Alpha One Stern Drive Insert Screen - Port

Port Side Outdrive Lower Unit Insert Screen

  • GLM P/N 21880
  • Replaces Mercury OEM 93424-1
  • Installed into the left (port) side of the lower unit
  • Plastic insert screen compatible with MR / Alpha 1 up to 1990 only
  • Exploded view Mercruiser drawings
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21880 port screen

21880 port screen

P/N 21880 Insert (port) $5.99

Customers who ordered P/N 21880 also purchased:

87510 Seal Kit 26-33144A2

87510 Seal Kit 26-33144A2

P/N 87510 Seal and gasket it for the Mercruiser 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 Gasket kit - fits between the outdrive and bell housing. Use gasket sealing compound (available below) on both sides of gasket. Replaces OEM 27-94996A2. $9.95

317201 Large Sealant-Johnson

317201 Large Sealant-Johnson

P/N 508235 Gasket sealant (includes brush inside lid). 4 ounce. $24.95