Retaining Nut

Starboard

Replaces: 934231

For: MR Alpha

Replaces: Mercruiser: 44-824110, 44-8M0140440, 44-8M0140445, 824110, 8M0140440; Bombardier: 0509390, 0775511

For all #1 & MR/ALPHA Units S/N 2791957 & above.

Also for 165 (6 cyl.) S/N 2763442 & above.

For: Alpha One Gen II S/N 0L100040 & up/Vazer

Replaces:  42724A3

For: Merc I and Alpha I drives Models: I, 1A, 1B, 1C, 1CEZ, 120, 140, 160, 165, 888, 898, 228, 225-S, 233, 250, 260, 470, 485,R, MR, Alpha Replaces: 10-28668

Replaces: 45518T1

Replaces: 814819A2

For ALPHA Gen II

Below (1991-97)

Replaces: 10-76156

Replaces: Mercruiser: 66081A1, 66081A2, 66081A4, 8M0171103

Brand: Recmar

Replaces: Mercruiser: 46020002, 46020T02; Bombardier: 0508901

Fits all #1/ALPHA Units (S/N 1684188 - OK999999)

Replaces: 1656-8866A55

Bravo I Complete Lower Unit (1 Upper Water Intake)

Heavy Duty

Replaces: 75832A3, 758321, 75832T1

Includes both straight and 90º grease fitting.

(Rockwell)

Fits ALPHA I Units S/N B418819 & above.

Also fits ALPHA I SS & BRAVO

Replaces: 12-35777

Replaces: 10-32470

Replaces: 14-18323

Replaces: 39383T, 343831

(Rockwell)

Fits IA/IB/IC & EZ, MC-I, R, MR,Alpha One, Gen II

(OL 949778 & below), Bravo (OM111207 & below),

MC II & TS

Replaces: 12-29395, 12-8M0042641

Replaces: 23-99299

Starboard

Replaces: 934231

For: MR Alpha

Replaces: Mercruiser: 44-824110, 44-8M0140440, 44-8M0140445, 824110, 8M0140440; Bombardier: 0509390, 0775511

For all #1 & MR/ALPHA Units S/N 2791957 & above.

Also for 165 (6 cyl.) S/N 2763442 & above.

For: Alpha One Gen II S/N 0L100040 & up/Vazer

Replaces:  42724A3

For: Merc I and Alpha I drives Models: I, 1A, 1B, 1C, 1CEZ, 120, 140, 160, 165, 888, 898, 228, 225-S, 233, 250, 260, 470, 485,R, MR, Alpha Replaces: 10-28668

Replaces: 45518T1

Replaces: 814819A2

For ALPHA Gen II

Below (1991-97)