(1) Sierra 18-2619-1 Outdrive mounting gasket & o-ring set for Mercruiser I, R, MR, Alpha One & Gen II stern drives.

Fits the following:

Mercruiser I, R, MR, Alpha One, and Gen II drive units from 1983-newer

Replaces Mercruiser 27-64818A3, 27-94996Q2, 27-94996T2

Replaces Mallory 9-60600, 9-62601

Replaces Sierra 18-2619

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