Replaces: Mercruiser: 23-815921A10, 23-815921A21, 23-815921A4-A10, 815921A17, 815921A21
Replaces: 23-30617A2 Mercruiser & Alpha 1 (S/N 1684188 & UP)
Replaces: 52-66063, 52-853594T, 888 S/N 3784375 & UP #1 Units S/N 3469428 & UP
Replaces: 24-30893 1/MC-1/R/MR/Alpha Mercruiser/Gen II lower S/N D469859-F679999 Mercruiser Vazer
Replaces: 23-67370 For: Ratios 1.47, 1.62, 1.81 & 1.94. For: Gen II (1998 & up), (0L 100040 & up) 1/4" Thick
Replaces: Mercruiser: 12-92721; OMC/Johnson/Evinrude: 350038 For: MR/Alpha/Gen II
Replaces: 23-32632 For: # 1R/MR/Alpha
Replaces: 94998A2, 94998A4 Upper Drive Unit Cap SN 6225577 & Later Alpha I, except Gen II