Page 882 - 2021 Sierra Catalog

MERCRUISER STERNDRIVE LOWER GEAR HOUSING BEARINGS (Cont.)
Sterndrive Model
I
IA,IB,IC & EZ Shift 120/140
120/140
120/140
470
470/485
160
165
165
888
225/233
898/228
898/228
250
255-TRS
260
280-TRS
R
MR / Alpha One
MR / Alpha One
MR / Alpha One (CR) Alpha One SS
Alpha One Gen II Alpha One Gen II Alpha One Gen II Alpha One Gen II Alpha One Gen II Alpha One Gen II
II
II
II-TR
TR
TRS
Years Beg. Serial # - End Serial #
1963 1536618 - 1684187 1964-66 1684188 - 2065189 1967-69 2062141 - 2791956 1970-77 2791957 - 4893634 1978-82 4893635 - 6225576 1976-77 4208730 - 4893934 1978-82 4893835 - 6225576 1967-69 2065190 - 2763441 1970-77 2763442 - 4890459 1978-81 4890460 - UP 1971-77 3106717 - UP 1974-77 3856268 - UP
1977 4782330 - 4898729 1978-82 4898730 - 6225576 1977 4791300 - 4898729 1973-74 3377316 - 4203749 1978-82 4898730 - 6225576 1975-76 4203750 - 4895399 1983 6225577 - UP 1984-90 6225577 - UP 1984-90 6225577 - UP 1984-90 6225577 - UP 1986-89 A545004 - UP 1991-95 D469859 - F679999 1991-95 D469859 - F679999 1996-97 F680000 - K999999 1996-97 F680000 - K999999 1998-newer L100040 - UP 1998-newer L100040 - UP 1962-67 1474909 - 2275488 1968-69 2398798 - 2671321 1973-76 3377316 - 4794899 1973-93 4794900 - UP 1973-93 4794900 - UP
Prop Bearing Carrier
Lower Drive Upper Drive Shaft Shaft (Pinion)
Inside Forward Gear (Needle)
18-1157
18-1157
18-1157
18-1157
18-1157
18-1157
18-1157
18-1157
18-1157
18-1157
18-1157
18-1157
18-1157
18-1157
18-1157
—
18-1157
—
18-1157
—
18-1157
—
18-1157
18-1157
—
18-1157
—
18-1157 ——
N/A 18-1156 — 18-1162
Outside Forward Gear
Reverse Gear
— 18-1155 18-1155 18-1155 18-1155 18-1155 18-1155 18-1155 18-1155 18-1155 18-1155 18-1155 18-1155 18-1155 18-1155 N/A 18-1155 N/A 18-1155 18-1155 18-1155 — 18-1155 18-1155 — 18-1155 — 18-1155
N/A 18-1156 ➂ N/A
N/A
N/A
18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 18-1158 —
—
—
— 18-1158
➁ ➂
DRAIN PLUG
Replaces: 10-79953A2, 10-79953,
10-79953Q04, 10-28634,
10-28634A1, 10-20259, 816610A1,
816610A2, F40109, 10-F50109 For: #1/R/MR/Alpha/Alpha I Gen II Both Upper And Lower Units
18-4220
THRUST WASHER
Replaces: 13171, 77987 V-6, Outboards &
Mercruiser Sterndrives
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
18-1117 18-1143 18-1117 18-1143 18-1117 18-1143 18-1117 18-1143 18-1117 18-1143 18-1117 18-1143 18-1117 18-1143 18-1117 18-1143 18-1117 18-1143 18-1117 18-1143 — —
— —
— 18-1161 — 18-1161 — —
Torrington#B1616 Prop Shaft Drive Gear
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
18-1156 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 18-1159 — 18-1159 18-1159 — 18-1156 — 18-1156
I/O — MERCRUISER - Drive System
➁
➄ ➄
➄
➂
➂
(CR)
(CR)
(CR)
18-1161 Top Bearing / 18-1163 Bottom Bearing
18-2349
SHIFT SHAFT SLEEVE Replaces: 23-67370
NUT AND WASHER KIT
864 Fits: Mercruiser R/MR/Alpha/Gen II Drives
➃ ➄
#15520 Stamped on Cup
Use 18-1173 for 2.40:1 ratio only (new style lower gears) our 18-2206-1
➀
➀—— ➀——
— 18-1159
18-2244
➁18-2375D
18-2375
18-23751-9➀
(PKG. OF 50 WITHOUT GASKET) DRAIN PLUG MAGNET Replaces: 10-14834, 10-14834A1, 22-67892, 22-67892A1, 22-67892A05, 22-67892A06, 22-8M0058389 (Magnet)
For: Alpha MR/Gen II lower units
Not to be used on #1/R lower units
18-22441-9➀
(PKG. OF 50 WITHOUT GASKET)
18-2460
PLUG KIT
Replaces: 22-88847A1, 11-88462
Fits: Mercruiser Stern Drives
➀ 18-4220D
18-72005
18-3784
THRUST WASHER Replaces: 805100 Fits: Bravo III (Front)