Page 740 - 2021 Sierra Catalog

18-5953-1
ALTERNATOR CONVERSION KIT
Includes new 18-5956 68 AMP alternator, mounting brackets 18-5968, pulley (8.0” O.D. x 2.75” H), wiring, hardware and instructions. Converts model 470 aluminum block Mercruiser engines serial number 4625580 & up with stator charging system and water cooled voltage regulator to alternator system. NOTE: Fuse kit 18-8220 (sold separately) is required on engines with a Delco starter (round solenoid mounted to starter); Prestolite starters with remote solenoid DO NOT require fuse kit. Visually inspect starter prior to ordering conversion kit.
18-5968
ALTERNATOR BRACKET Replacement bracket for alternator conversion kit used on 470 Series Mercruiser included in 18-5953-1 kit.
For: Mercruiser 224 / 3.7L
18-5740
VOLTAGE REGULATOR Replaces: 42785
18-5724
VOLTAGE REGULATOR Replaces: 78385
18-8220 FUSE KIT
Replaces: 88-79023A91
For use with 18-5953-1 alternator conversion kits installed on Mercruiser (Model 470) 3.7 liter aluminum block engines serial number 6902288 & Up. 90 AMP
Model
110
120
120
120 / 2.5L
140
140
140/3.0L
140/3.0L
140/3.0L/3.0LX
140/3.0LX
165/3.7L
170
180/3.7LX
190
470
470MIE
485
140
150
160
160
165
165
200
175/4.3L
185
Cyl.
GM 4
GM 4
GM 4
GM 4
GM 4
GM 4
GM 4
GM 4
GM 4
GM 4
Merc 4
Merc 4
Merc 4
Merc 4
Merc 4
Merc 4
Merc 4
GM 6
GM 6
GM 6
GM 6
GM 6
GM 6
GM 6
GM V-6
GM V-6
Years
1963-1966 1964-1975 1976-1982 1983-1989 1968-1975 1976-1981 1982-1989 1999-2001 1990-92 1992-97 1987-1989 1985-1986 1987-1989 1985-1986 1976-1984 1980-1981 1980-1984 1963 1964-66 1967-69 1969 1970-1975 1976-1981 1969 1987-1992 1983-1984
Beg Serial #
1538370 1666601 4469866 6229718 2508261 4460665 6229718 OL382122 C856559 D831101 B434941 6916779 B436391 6916779 4208730 5520115 5685394 1538930 1666495 2048022 2768032 2770032 4471566 2453769 B527955 6330183
➇ ➈ ➉ ➊ ➋ ➌ ➍
End Serial #
2044033 4469865 6229717 C853255 4460664 6229717 C856558 OM326292 D831100 OK999999 C762299 B434940 C762299 B436390 6916778 6218036 6916778 1725960 2048046 2768031 2770031 4471565 5813433 2712072 D714106 6919655
Slave Solenoid
18-5836 18-5836 18-5815 18-5817 18-5836 18-5815 18-5817 18-5817 18-5817 18-5817 18-5802 18-5802 18-5802 18-5802 18-5802 18-5802 18-5802 18-5836 18-5836 18-5836 18-5836 18-5836 18-5815 18-5836 18-5816 18-5816
Reman Starter
18-5911 18-5911 18-5911 18-5911 18-5911 18-5911 18-5911 — 18-5911 N/A 18-5907 18-5907 18-5907 18-5907 18-5907 18-5907 18-5907 18-5911 18-5911 18-5911 18-5911 18-5911 18-5911 18-5911 — 18-5911
➎ ➏ ➐ ➑ ➒ ➓ **
New Starter
18-5911 18-5911 18-5911 18-5911 18-5911 18-5911 18-5911 18-6275-1 18-5911 18-6275-1 18-5907 18-5907 18-5907 18-5907 18-5907 18-5907 18-5907 18-5911 18-5911 18-5911 18-5911 18-5911 18-5911 18-5911 18-5913-1 18-5911
RH Rotation Standard ignition Thunderbolt ignition Thunderbolt IV Thunderbolt V Transmission models Delco Style
Reman Alternator
— 18-5957 18-5957 — 18-5957 18-5957 18-5957 — 18-5957 —
N/A
N/A
N/A
N/A
N/A
N/A
N/A
—
—
— 18-5957 18-5957 18-5957 —
—
—
New Alternator
— 18-5957 18-5957 18-5966 ➃ 18-5957 18-5957 18-5957 18-5983 ** 18-5957 18-5966 ➃ N/A
N/A
N/A
N/A
N/A
N/A
N/A
—
—
— 18-5957 18-5957 18-5957 — 18-5966 ➃ 18-5966 ➃
722 ➆
➀ For 12 3/4" Dia.Flywheel
➁ For 14" Dia. Flywheel
➂ For permanent magnet models use 18-5919-1 ➃ 55 AMP up grade to 65 AMP use 18-5965
➄ Black
➅ For permanent magnet models use 18-5913-1
Bravo drive
Firepower ignition
Ignition module mounted on distributor Ignition module mounted on elbow
LH rotation
NLA for models prior to S/N 4167000 PG 260 (9-1/4" long)
PG260F1 (8-1/2" long)
I/O — MERCRUISER - Electrical System