Sierra 18-2644 Outdrive Upper Seal Kit MerCruiser - Alpha I Gen II SNFIRS3 Use what the pros use

Use what the pros use - high-suds formula removes common marine debris without stripping wax from the surface

and electrical shock

and insert the service adaptor (included)

With two independent audio zones available

disposable propane fuel canisters

Sierra 18-2644 Outdrive Upper Seal Kit MerCruiser - Alpha I Gen II SNFIRS3 Use what the pros useUpper Unit Seal Kit Replaces OEM Models: Mercruiser # 26 88397A1 Alpha I Generation II Contains: 1 Seal Gasket Sierra # 18 2944 OEM # 26 455771 1 Drain Screw Gasket Sierra # 18 2945 OEM # 12 191833 1 Drain Screw O Ring Sierra # 18 7188 OEM # 26 805726 1 O Ring Sierra # 18 7169 OEM # 25 70937 1 O Ring Sierra # 18 7161 OEM # 25 32546 2 O Ring Sierra # 18 7420 OEM # 25 25439 2 O Ring Sierra # 18 7103 OEM # 25 29845 1 O Ring Sierra # 18 7117 OEM # 25