I/O MERCRUISER - Ignition/Electrical Systems

18-5225
SPARK PLUG WIRE KIT
Replaces:
Mercury 84-99215A26,
84-813706A26
Kit includes 25 ft. roll of 7 MM hypalon ignition wire with a metallic
core and a large assortment of three different end fittings.

18-5226
Ignition Wire
Metallic Core
100 Spool
7mm Hypalon

BATTERY CABLES

Part No.

Size

Color

Gauge

BC88523
BC88533
BC88543
BC88553

2
2
4
4

red
black
red
black

4
4
2
2

Part No.

Size

Color

Gauge

BC88563
BC88573
BC88583
BC88593

6
6
8
8

red
black
red
black

2
2
1
1

Gauge cable with soldered lug terminals on each end to accept a 3/8" stud

PKG. OF 10

PKG. OF 10

18-5224
18-5224-9
SPARK PLUG WIRE
TERMINAL
Replaces: Mercury 20121

18-5750
18-5750-9
UNIVERSAL SPARK
PLUG BOOTS
Supplied complete w/Terminal Connector

18-5752
UNIVERSAL
SPARK PLUG BOOT
8mm

18-6275
Starter
Replaces:
50-807904A1, 50-863007A1
Permanent Magnet Gear Reduction Starter
Inboard
2 Long Bolt Offset Pattern
CW Rotation
SAE J1171
Use w/ Late Model 3.0L Engines with 14" Flywheel
Fits : Volvo Penta, Mercruiser, Marine Power

b
18-5603
STARTER
Replaces: 50-808011A4

Noseless:CCW Top mount rear entry starter for

standard rotation GM & Ford engines. Can be
used in place of 18-5908 and 18-5902

532

18-5923
Starter
PMGR Replacement for 18-5903;
302CID, 351CID Ford Engines

18-5911
18-5900
STARTER
REMANUFACTURED STARTER
(Heavy-Duty) (No Core) (Clockwise) For GM engines, bottom mount straight across bolt pattern. Standard rotation
Replaces: 50-76965A4,50-99417A2,50-99419A3, 50-17251A3, 50-77328A3
Replacement Solenoid: 18-5837
SAEJ1171
Priced per Package

APPLICATION BEGINS ON PAGE 537

18-5907
18-5901
STARTER
REMANUFACTURED STARTER
(Heavy-Duty) (No Core) (Clockwise) Top mount rear entry starter for opposite rotation GM & Ford engines.
Will also replace standard rotation. Will not replace non-starter mounted solenoids.
Mercruiser built 4 cyl. 165/170/180/190/470/485/488
Replaces: 50-72550A2,50-79604A3, 50-97499A2, R4
Replacement Solenoid: 18-5837
SAEJ1171

18-5913
STARTER
(Clockwise)
Delco permanent magnet gear reduction 2 bolt starter
12V - 11 Tooth - Offset Bolt Pattern
For: Late model GM - 14" Flywheel
Replaces: 50-812428A3, 50-812604A2,
50-822330A2, 50-864340A2
Replacement Solenoid: 18-6287
saej1171 For: 4.3L (1996 & up); 5.0 & 5.7L (1998 & up)

I/O MERCRUISER - Electrical System

18-5919
STARTER
Permanent magnet I/O starter
Replaces: 50-806963A4, 50-806965A2, 50-806965A4
Replacement Solenoid: 18-6287
Fits: Chevy Engines with 12 3/4" flywheels
Straight across bolt pattern
SN-OF803000AN/OF803114AN 4.3lx/lxh Alpha/Bravo 262 CID
SN-355305AN/22560AN 5.7L Alpha (EFI)/5.7L Bravo (EFI)

saej1171

18-5910
18-5905

STARTER
REMANUFACTURED STARTER
(Heavy-Duty) (No Core) (Clockwise) Small block V-6 & V-8 GM engine with 14 1/4" flywheel and
bottom mount, offset bolt pattern. For standard rotation engines.
Replaces: 50-12177A2, 50-99418A2

18-5908
STARTER

18-5902
REMANUFACTURED STARTER
(Heavy-Duty) (No Core) (Counter-Clockwise)
Top mount rear entry starter for standard rotation GM & Ford engines.
Replaces: 50-76965A3, 50-808011A1
Replacement Solenoid: 18-5837
SEAJ1171
APPLICATION BEGINS ON PAGE 537

533

I/O MERCRUISER - Electrical System

18-5903
STARTER
(No Core) (Clockwise) Bottom mount, two bolt
pattern for standard rotation Ford engines.
Replaces: 50-69865A1, 50-12872, 50-56886
Replacement Solenoid: 18-5801
*For PMGR style order 18-5923

18-2434
FLYWHEEL BELL HOUSING
Replaces: 814309A1

For: GM V-8s Big & Small Blocks Inboard/Ski Models

Starter BOLTS

Description
Starter Bolt 3/8 - 16
Starter Bolt 3/8 - 16
Starter Bolt 3/8 - 16
Starter Bolt 3/8 - 16

Mercruiser #
Part #
10-805343-1
18-8401
10-8053432
18-8402
10-8053433
18-8403
10-8083434 18-8404-1

4 21/32 Long
4 3/8 Long
1 13/16 Long
1 11/16 Long

18-5837
SOLENOID
Replaces: 89-99253, 89-18080
Delco

18-5717
STARTER
BRUSH SET
Replaces: 33270

18-5838
SOLENOID
Replaces: 33261, 89902
Delco

18-5804
SOLENOID
Replaces: 13037
Delco

18-5840
SOLENOID
Prestolite 15-79,
SAW 4201, SAW4207, SAW4210

BRUSH SET/STARTER SWITCH APPLICATION

Years
Volt.

1977-82
1977-82
1977-82

12
12
12

Starter
No.

Brush
Set

1108755
1108756
1109484,5,6
18-5801D

18-5801
SOLENOID
Replaces: 89-76416A1

18-5717
18-5717
18-5717

Starter
Switch

18-5838

18-5838

Years
Volt.

1971-78
1969-78

12
12

Starter
No.

ALL
MEO-7003

18-5802D

18-5802
SOLENOID
Replaces: 65057A1, 65057T1

For: PG 260 Series Starters, GM V6 & V8 (1983-Up)

534

18-5815
SOLENOID
Replaces: 89-68258A4,
89-853654A1, 89-76545

Starter
Switch

18-5717

18-5838
18-5840

18-5810D

18-5810
SOLENOID
18-5816D

18-5815D

18-5811
Starter Solenoid
Replaces: 809463A1

Brush
Set

18-5816
SOLENOID
Replaces: 89-96054, T, 89-91975
(Flat Bracket)

Items ending in "D" are Display Packaged - Regular number is Non-Display

APPLICATION BEGINS ON PAGE 537

18-5817
SOLENOID
Replaces: 89-96158, T
(Curved Bracket)

18-5820
SOLENOID
Replaces: 89-818999A2,
89-825842A1, 89-850188T1

18-6749
Trim Bracket
Metal Bracket
Replaces: 862548A1, 42419A1
For: MerCruiser Floor Mount Bracket

18-6750
Trim Bracket
Stainless Steel
Replaces: 862548A1, 42419A1
For: MerCruiser Floor Mount Bracket

18-6768
Complete Power Trim
Pump Assembly
Steel Bracket
Replaces: 93247A7

18-6753
Hydraulic Trim
Pump Assembly
Stainless Steel Bracket
Replaces: 14336A9, 88183A12

Fits: 1983 and Later without quick connect

18-6763
TILT/TRIM MOTOR
Replaces: 92975A6, 79271A4, 67914A2

To 1984. Fits most Mercruiser Sterndrives (Motor and

Reservoir Only)
For Repair Kit use: 18-6253

18-6274
TILT/TRIM MOTOR
Replaces: 14336A20
Oildyne low pressure/high flow

18-5836
SOLENOID
Replaces: 25661, 25661 1

Replacement pump for Prestolite high pressure/low

flow system. Primarily used 1982 and earlier.

18-6769-1
TILT/TRIM PUMP
Replaces: 14336A8, 88183A5 From 1984
Fits most Mercruiser Sterndrives

18-6771
TILT/TRIM RESERVOIR
Replaces: 18525A1

18-9802
TIMING LIGHT

Self-powered accurate up to 10,000 RPMs

I/O MERCRUISER - Electrical System

18-5836D

18-5817D

18-6752
Hydraulic Trim
Pump Assembly
Metal Bracket
Replaces: 14336A9, 88183A12

Fits: 1983 and Later without quick connect

18-6799
Complete Power
Trim Pump Assembly
Stainless Steel Bracket
Mercruiser 93247A7

Replacement pump for Prestolite high pressure/low

flow system.Salt water series. Stainless steel bracket.
Primarily used 1982 and earlier.

18-6772
TILT PUMP MOTOR
Replaces: 17649, 17649T, 891736T

For late style Alpha I, Generation II, and Bravo

drives; early style square motors.
Mercruiser Sterndrive replacement for Oildyne units

18-6778
TILT/TRIM RESERVOIR
Replaces: 883166A2

For: Tilt Motors with 4 Screw Attachments

Items ending in "D" are Display Packaged - Regular number is Non-Display

APPLICATION BEGINS ON PAGE 537

535

I/O MERCRUISER - Electrical System

18-5872
STATOR
Replaces: 398-6231A10
For: 3.7L 1983-89

18-6254
COMMUTATOR
END PLATE
Replaces: 392-2940

For : Use with Prestolite Pumps

(Mercury #s 79271A4 and 88475A5)

18-6255
POWER TRIM BRUSH
Replaces: 392-8989

For : Use with Prestolite Pumps

(Mercury #s 93247A4)

18-5983
ALTERNATOR
Replaces: 862030T SAE J1171

For use with 18-6763

7SI/70 amp, Hinge Mount,

Serpentine Pulley 2.44" Diameter

7SI/70 amp, Hinge Mount,

Serpentine Pulley 1.97" Diameter

18-5956
ALTERNATOR

(1-Wire) (No Core) (68 AMP)

Single wire connection fits Mercruiser and many other
applications. Equipped with fan and drive pulley.

18-5957
ALTERNATOR

18-5951
ALTERNATOR

18-5945
ALTERNATOR

(3-Wire) (No Core) (68 AMP) SAE J1171

Replaces Mando, Motorola and original equipment
Delco. Uses same electrical connections and mounting
method. Equipped with fan and serpentine drive pulley.

For : Use with Prestolite Pumps

(Mercury #s 74436A9, 79271A4,
88475A5 and 93247A4)

18-6298
ALTERNATOR
Replaces: 863077T SAE J1171

Replaces: 69729 SAE J1171

SAE J1171

18-6256
POWER TRIM SPRING SET
Replaces: 392-2529

18-6293
ALTERNATOR
Replaces: 862031T SAE J1171

7SI/70 amp, Hinge Mount, Single Groove Pulley

(3-Wire) (No Core) (68 AMP)

Replaces Mando, Motorola and original equipment
Delco. Uses same electrical connections and
mounting method. Equipped with fan and drive pulley.
Replaces: 78477, 78403A2, 92497A3.

536

18-6253
COMMUTATOR
END PLATE

(3-Wire) (No Core) (68 AMP)

Replaces Mando, Motorola and original equipment
Delco. Uses same electrical connections and
mounting method. Equipped with fan and drive pulley.

18-5950
ALTERNATOR

(1-Wire) (No Core) (68 AMP)

Single wire connection fits Mercruiser and many other
applications. Equipped with fan and drive pulley.

Replaces: 69729 SAE J1171

(Remanufactured)

18-5946
ALTERNATOR

Replaces: 78477, 78403A2, 92497A3

(Remanufactured) SAE J1171

(1-Wire) (No Core) (68 AMP)

Single wire connection fits Mercruiser and many
other applications. Equipped with fan and
SAE J1171
serpentine drive pulley.

18-5960
ALTERNATOR
Serpentine Pulley 65 Amp
Replaces: 807653T SAE J1171

18-5966
ALTERNATOR
Single Groove Pulley 55 Amp
Replaces: 817119A4, 12449A1 SAE J1171

APPLICATION BEGINS ON NEXT PAGE

Replacement belt for alternator

conversion kit used on 470 Series
Mercruisers. Included in 18-5953-1 kit.

18-5968
Alternator Bracket

Replacement bracket for alternator

conversion kit used on 470 Series
Mercruiser included in 18-5953 kit

Model #

Cyl.

Years
Beg. S/N End. S/N

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
185
205
262 Mag. EFI
262 Mag. EFI
4.3L/LX/LXH
4.3L/LX/LXH
4.3L/LH
4.3L/LH(Gen +)
4.3EFI
4.3L EFI
4.3L MPI
190
200
200
200/5.0L
200/5.0L
215 MCM &MIE

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
GM V-6
GM V-6
GM V-6
GM V-6
GM V-6
GM V-6
GM V-6
GM V-6
GM V-6
GM V-6
GM V-6
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
Ford V-8

1963-1966
1538370
1964-1975
1666601
1976-1982
4469866
1983-1989
6229718
1968-1975
2508261
1976-1981
4460665
1982-1989
6229718
1999-2001 OL382122
1990-92
C856559
1992-97
D831101
1987-1989
B434941
1985-1986
6916779
1987-1989
B436391
1985-1986
6916779
1976-1984
4208730
1980-1981
5520115
1980-1984
5685394
1963
1538930
1964-66
1666495
1967-69
2048022
1969
2768032
1970-1975
2770032
1976-1981
4471566
1969
2453769
1987-1992
B527955
1983-1984
6330183
1985-1987
A331455
1985-1991
A331455
1996-1997
F803800
1996-1997
F803800
1992-1997
D714107
1996-1997
F803000
1998-99
L010044
2000-02
OL619000
1998-99
L012009
2000-01
OL619000
2002
OM300000
1963-1964
1564539
1985-1986
6218462
1985-1986
6218462
1987-1995
B525982
1987-1995
B525982
1970-1972
2781153

For 12 3/4" Dia.Flywheel

For 14" Dia. Flywheel
For permanent magnet models use 18-5919
55 AMP up grade to 65 AMP use 18-5965
Black
For permanent magnet models use 18-5913

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
B527954
D714369
K999999
K999999
K999999
K999999
OL618999
OM320024
OL618999
OM299999
OM320024
1730903
B525981
B525981
F600999
F600999
3563181

Includes new 68 AMP alternator, mounting brackets 18-5968, pulley,

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

I/O MERCRUISER - Electrical System

18-5965
ALTERNATOR
65 Amp
Replaces: 817119A1,
817119A4, 805884T
SAE J1171

18-5967
ALTERNATOR
Serpentine Pulley 55 Amp
Replaces: 807652T SAE J1171

18-5949
conversion kit drive belt

18-5953-1
ALTERNATOR CONVERSION KIT

18-8220
FUSE KIT
Replace: 88-79023A91

For use with 18-5953 alternator conversion

kits installed on Mercruiser (Model 470) 3.7
liter aluminum block engines serial number
6902288 & Up.

90 AMP
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
18-5816
18-5816
18-5817
18-5817
18-5817
18-5817
18-5817
18-5817
18-5817
18-5817
18-5817
18-5836
18-5816
18-5816
18-5816
18-5817
18-5836

Bravo drive
Firepower ignition
Ignition module mounted on distributor
Ignition module mounted on elbow
LH rotation

18-5740
VOLTAGE
REGULATOR
Replaces: 42785

Reman
Starter
New Starter

18-5900
18-5900
18-5900
18-5900
18-5900
18-5900
18-5900

18-5900
N/A
18-5901
18-5901
18-5901
18-5901
18-5901
18-5901
18-5901
18-5900
18-5900
18-5900
18-5900
18-5900
18-5900
18-5900

18-5900
N/A
N/A
N/A
N/A







18-5900
18-5900
18-5905
18-5905
18-5905
18-5902

Reman
Alternator

18-5911
18-5911
18-5911
18-5911
18-5911
18-5911
18-5911
18-6275
18-5911
18-6275
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
18-5911
18-5913
18-5913
18-5913
18-5913
18-5913
18-5913
18-5913
18-5913
18-5913
18-5913
18-5913
18-5911
18-5911
18-5910
18-5910
18-5910
18-5908

NLA for models prior to S/N 4167000

PG 260 (9-1/4" long)
PG260F1 (8-1/2" long)
RH Rotation
Standard ignition

New
Alternator

18-5951
18-5957
18-5951
18-5957

18-5966
18-5951
18-5957
18-5951
18-5957
18-5951
18-5957

18-5983
18-5951
18-5957

18-5966
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A






18-5951
18-5957
18-5951
18-5957
18-5951
18-5957



18-5966

18-5966

18-5966

18-5966

18-5960

18-5960

18-5967

18-5967

18-5967

18-6293

18-5960

18-6293

18-6293



18-5966

18-5966

18-5966

18-5966
18-5951
18-5957
Thunderbolt ignition
Thunderbolt IV
Thunderbolt V
Transmission models
Delco Style

J
J
J

537

I/O MERCRUISER - Electrical System

538

Model #

215 MCM &MIE

225
225 MIE
225 MIE
888
888
225
225 MIE
225 MIE
225
228/230
228/230
228 MIE
228 MIE
230/5.0LX
230/5.0LX
230/5.0L MIE
230/5.0L MIE
5.0L(Gen +)
5.0L(Gen +)
5.0L EFI
5.0L EFI
5.0L MPI
198 MIE
198 MIE
898
898
898
233
233 MIE
233 MIE
250 MCM & MIE
250 MCM & MIE
250
255
255 MIE
255 MIE
255
255 MIE
255 MIE
260
260
260
260/5.7L
260/5.7L
260/5.7L MIE
260/5.7L MIE
5.7L/LX
5.7L/LX
5.7L
5.7L/LX EFI
5.7L/LX EFI
5.7L EFI
5.7L EFI
5.7L MIE
5.7L MIE
5.7L MIE
5.7L MIE
5.7L EFI MIE
5.7L Ski
5.7L Ski
5.7L Ski
5.7L Ski
5.7L Ski
5.7L Ski
350 Mag. Alpha
350 Mag. Alpha
350 Mag. Alpha
350 Mag. EFI & MPI
350 Mag. EFI & MPI
350 Mag MPI
350 Mag MPI / Horizon
350 Mag.MPI MIE
350 Mag MPI MIE / Horizon
350 Mag Ski
350 Mag Ski
350 Mag Ski
350 Mag EFI Ski
350 Mag MPI Ski
350 Mag MPI Ski
350 Mag MPI Ski
Black Scorpion

Cyl.

Ford V-8
Ford V-8
Ford V-8
Ford V-8
Ford V-8
Ford V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
Ford V-8
Ford V-8
Ford V-8
GM V-8
GM V-8
GM V-8
Ford V-8
Ford V-8
Ford V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8

Years
Beg. S/N End. S/N

1970-1972
1973-1974
1973-1974
1973-1974
1971-1977
1971-1977
1963-1966
1968
1968
1967-1969
1977-1986
1977-1986
1977-1980
1977-1980
1987-1995
1987-1995
1987-1988
1987-1988
1998-99
2000-2002
1998-99
2000-01
2002
1977
1977
1977-1982
1983-1984
1983-1984
1975-1977
1975-1976
1975-1976
1968-1969
1968-1969
1977
1973-1974
1973-1974
1973-1974
1975-1976
1975-1980
1975-1980
1978-1982
1982-1986
1982-1986
1987-1995
1987-1995
1987-1995
1987-1995
1996
1997 & Up
2000-02
1995-1996
1997
1998 & Up
2000-01
1994-1996
1994-1996
1997 & Up
1998-01
1997
1985-1995
1985-1995
1996
1997
1998 & Up
2000-01
1986-1995
1987-1996
1997
1995-1996
1997 & Up
2000-01
2002
1998 & Up
1999-01
1991-1996
1991-1996
1997
1994-1997
1995-1996
1998 & Up
1998-02
1996

For 12 3/4" Dia.Flywheel

For 14" Dia. Flywheel
For permanent magnet models use 18-5919
55 AMP up grade to 65 AMP use 18-5965
Black
For permanent magnet models use 18-5913

2781153
3385721
3385721
3385721
3108723
4612110
1539620
2278647
2278647
2278647
4765100
4765100
4765100
4765100
B525982
B525982
5907058
5907058
L015751
L619000
L012052
L619000
M300000
4762210
4762210
4762210
621462
621462
4173000
4173000
4173000
2314301
2314301
4768000
3258728
3258728
3258728
4175500
4175500
4175500
4908850
6218462
6218462
B525982
B525982
5907058
5907058
F601000
K001527
L619000
F225560
K001506
L010035
L619000
F622151
F622151
K040307
L002003
K040300
A338533
A338533
F775200
K040004
L002005
L619000
A635178
B525982
K001527
F415189
K001501
L619000
M300000
L002008
L304700
D505450
D505450
K040400
F215561
F350583
L002600
L002600
F800000

3563181
4166999
4176999
4176999
4612109
& Up
2278646
2694014
2694014
2694014
B525981
B525981
5907057
5907057
F600999
F600999
B788151
B788151
L618999
M320024
L618999
M299999
M320024
6218461
6218461
6218461
B525981
B525981
4902304
4775784
4775784
2639854
2639854
4908849
4175499
4178299
4178299
4767999
5907057
5907057
6218461
B525981
B525981
F600999
F600999
F746099
F746099
K001526
& Up
M320024
K001505
K999999
& Up
M299999
K040306
K040306
& Up
L677226
K999999
F775199
F775199
K040003
K999999
& Up
L678784
F600999
K001526
K999999
K001500
& Up
M299999
M320024
& Up
L678398
K040399
K040399
K999999
K999999
F799999
& Up
M310021
K040000

Slave
Solenoid

18-5836
18-5802
18-5836
18-5836
18-5802
18-5801
18-5836
18-5836
18-5836
18-5836
18-5816
18-5816
18-5815
18-5815
18-5816
18-5817
18-5816
18-5816
18-5817
18-5817
18-5817
18-5817
18-5817
18-5815
18-5815
18-5801
18-5816
18-5816
18-5801
18-5836
18-5836
18-5836
18-5836
18-5801
18-5802
18-5836
18-5836
18-5815
18-5815
18-5815
18-5801
18-5816
18-5816
18-5816
18-5817
18-5816
18-5816
18-5817
18-5817
18-5817
18-5816
18-5816
18-5816
18-5816
18-5816
18-5816
18-5817
18-5817
18-5816
18-5816
18-5816
18-5817
18-5817
18-5817
18-5817
18-5816
18-5817
18-5817
18-5816
18-5816
18-5816
18-5817
18-5816
18-5816
18-5816
18-5817
18-5817
18-5816
18-5816
18-5817
18-5817
18-5816

Bravo drive
Firepower ignition
Ignition module mounted on distributor
Ignition module mounted on elbow
LH rotation

Reman
Starter
New Starter

18-5901
18-5903
18-5902
18-5901
18-5903
18-5903
18-5900
18-5902
18-5901

18-5900
18-5905
18-5902
18-5901
18-5905
18-5905
18-5902
18-5901





18-5902
18-5901
18-5900
18-5900
18-5905
18-5903
18-5902
18-5901
18-5902
18-5901
18-5900
18-5903
18-5902
18-5901
18-5900
18-5902
18-5901
18-5900
18-5900
18-5905
18-5905
18-5905
18-5902
18-5901







18-5902
18-5901
18-5902
18-5902
18-5902

18-5901




18-5905
18-5905





18-5908
18-5908

Reman
Alternator

18-5907


18-5908
18-5907


18-5911
18-5908
18-5907

18-5911
18-5910
18-5908
18-5907
18-5910
18-5910
18-5908
18-5907
18-5913
18-5913
18-5913
18-5913
18-5913
18-5908
18-5907
18-5911
18-5911
18-5910

18-5908
18-5907
18-5908
18-5907
18-5911

18-5908
18-5907
18-5911
18-5908
18-5907
18-5911
18-5911
18-5910
18-5910
18-5910
18-5908
18-5907
18-5913
18-5913
18-5913
18-5913
18-5913
18-5913
18-5913
18-5908
18-5907
18-5908
18-5908
18-5908
18-5913
18-5907
18-5913
18-5913
18-5913
18-5913
18-5910
18-5910
18-5913
18-5913
18-5913
18-5913
18-5913
18-5902
18-5902
18-5913
18-5913
18-5913
18-5913
18-5913
18-5913
18-5913
18-5913

NLA for models prior to S/N 4167000

PG 260 (9-1/4" long)
PG260F1 (8-1/2" long)
RH Rotation
Standard ignition

18-5951
18-5951
18-5951
18-5951
18-5951
18-5951






18-5951
18-5951









18-5951
18-5951
18-5951


18-5951
18-5951
18-5951


18-5951
18-5951
18-5951
18-5951
18-5951
18-5951
18-5951
18-5951

New
Alternator

18-5957
18-5957
18-5957
18-5957
18-5957
18-5957




18-5966
18-5966
18-5957
18-5957
18-5966
18-5966
18-5966
18-5966
18-5967
18-6293
18-5960
18-6293
18-6293
18-5957
18-5957
18-5957
18-5966
18-5966
18-5957
18-5957
18-5957


18-5957
18-5957
18-5957
18-5957
18-5957
18-5957
18-5957
18-5957
18-5966
18-5966
18-5966
18-5966
18-5966
18-5966
18-5966
18-5967
18-6293
18-5965
18-5960
18-5960
18-6293
18-5966
18-5966
18-5967
18-6293
18-5960
18-5966
18-5966
18-5966
18-5967
18-5967
18-6293
18-5966
18-5966
18-5967
18-5965
18-5960
18-6293
18-6293
18-5960
18-6293
18-5966
18-5966
18-5967
18-5965
18-5965
18-5960
18-6293
18-5965

Thunderbolt ignition
Thunderbolt IV
Thunderbolt V
Transmission models
Delco Style

J
J
J

J
J
J


Cyl.

Years
Beg. S/N End. S/N

Black Scorpion
Black Scorpion
Black Scorpion
270 MCM & MIE
270 MCM & MIE
280 TRS
300 TR TEMPEST
300 MR TEMPEST
300 MR TEMPEST
320 EFI
MX 6.2L MPI
MX 6.2L MPI Horizon
MX 6.2L MPI Horizon MIE
MX 6.2L MPI MIE
MX 6.2L Black Scorpion Ski
325 MCM & MIE
325 MCM & MIE
325 MCM & MIE
325 MCM & MIE
330
330
330
330 MIE
330 MIE
340/7.4L MIE w/BW
340/7.4L MIE w/BW
7.4L
7.4L
7.4L
7.4LX EFI & MPI
7.4L MPI
7.4L MIE
7.4L MIE
7.4L EFI & MPI MIE
7.4L MPI MIE
350 MIE
350 MIE
370 TRS
370 TRS
370 TRS
390 MCM & MIE
390 MCM & MIE
400 TRS
400 TRS
420
425
440 TRS
440 TRS
450
454 Mag.
454 Mag.
454 Mag. MPI
454 Mag. MPI
454 Mag. MPI MIE
454 Mag. MPI MIE
454 EFI Ski
460 TRS
460 TRS
465
465
500
500
500 Bulldog
500 Bulldog
502 Mag. Bravo
502 Mag. MPI
502 Mag. MPI
525 SC
525 SC
525 SC
525 SC
525 EFI
575
600 SC
600 SC
600 SC
600 Sci
800 SC
8.2L MIE
8.2L MIE
8.2L MPI MIE
8.2L MPI MIE

GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8
GM V-8

1997 & Up
1997 & Up
1997-01
1969-1972
1969-1972
1975-1976
1985-1986
1985-1986
1985-1986
1987-1989
2000-2002
2002
2002
2002
2001
1968-1970
1968-1970
1970-1974
1970-1974
1977-1981
1977-1981
1982-1987
1977-1980
1977-1980
1981-1992
1981-1992
1988-1991
1988-1996
1992-1997
1996-1997
1998 & Up
1989-1996
1992-1997
1995-1997
1998 & Up
1974-1976
1974-1976
1978-1985
1978-1985
1985-1987
1969-1970
1969-1970
1980-1986
1980-1986
1987-1989
1990-1992
1983-1986
1983-1986
1995-1996
1986-1994
1995-1997
1994-1997
1998 & Up
1996-1997
1998 & Up
1995-1996
1983-1986
1983-1986
1990-1994
1990-1994
1994-1997
1994-1995
1990-1996
1990-1996
1990-1993
1993-1997
1998 & Up
1991-1993
1991-1993
1993-1997
1993-1997
2003-2010
1986-1992
1991-1996
1991-1996
1997
2005-2010
1993-1996
1990-1996
1993-1996
1996-1997
1998 & Up

For 12 3/4" Dia.Flywheel

For 14" Dia. Flywheel
For permanent magnet models use 18-5919
55 AMP up grade to 65 AMP use 18-5965
Black
For permanent magnet models use 18-5913

K040001
K040001
K040001
2851074
2851074
4176250
6668677
6668677
6668677
A543604
L680003
M300000
M300000
M300000
L670015
2278747
2278747
2761142
2761142
4623115
4623115
6083145
4623115
4623115
5889914
5889914
B771113
B771113
D603118
F602010
L010003
C391564
D715494
F563052
L002006
3780450
3780450
4179554
4179554
6721528
2781129
2781129
4179554
4179554
A398941
A398941
4179554
4179554
F347100
A631894
F305000
F115700
L010029
F820100
L002200
F215800
4179554
4179554
C849992
C849992
F213293
F213293
C577254
C577254
C878221
D840650
L017000
D456000
D456000
D763871
D763871
M900146
A677429
D456489
D456489
K000227
M952908
D763836
C878221
D857200
F819620
L002450

& Up
& Up
L678036
3385720
3385720
4770199
B430367
B430367
B430367
C622418
M320024
M320024
M310099
M310099
L678036
2761141
2761141
3780449
3780449
6083144
6083144
B816540
5889913
5889913
D715493
D715493
D603117
F800699
K999999
K999999
& Up
F820141
K999999
K999999
& Up
4623109
4623109
6721527
6721527
B714586
3042731
3042731
B457644
B457644
B622418
D937011
B485220
B485220
F347277
F304999
K999999
K999999
& Up
K999999
& Up
F820099
6181046
6181046
F213244
F213244
& Up
& Up
& Up
& Up
F114528
K999999
& Up
D763831
D763831
& Up
& Up
& Up
D763716
F877642
F877642
& Up
& Up
& Up
F819619
F819619
K999999
& Up

Slave
Solenoid

18-5816
18-5816
18-5816
18-5836
18-5836
18-5815
18-5816
18-5816
18-5816
18-5816
18-5817
18-5817
18-5817
18-5817
18-5816
18-5836
18-5836
18-5836
18-5836
18-5836
18-5815
18-5816
18-5836
18-5815
18-5816
18-5816
18-5816
18-5816
18-5817
18-5816
18-5817
18-5816
18-5817
18-5816
18-5817
18-5836
18-5836
18-5815
18-5815
18-5816
18-5836
18-5836
18-5815
18-5815
18-5816
18-5816
18-5815
18-5815
18-5820
18-5816
18-5817
18-5816
18-5816
18-5816
18-5816
18-5816
18-5815
18-5815
18-5816

18-5820
18-5820
18-5820
18-5816
18-5816
18-5816
18-5816
18-5816
18-5816
18-5820
18-5820

18-5816
18-5816
18-5820
18-5820

18-5820
18-5816
18-5817
18-5816
18-5816

Bravo drive
Firepower ignition
Ignition module mounted on distributor
Ignition module mounted on elbow
LH rotation

Reman
Starter
New Starter

18-5902
18-5901
18-5900
18-5908








18-5902
18-5901
18-5902
18-5901


18-5902
18-5902
18-5901
18-5902
18-5901
18-5905
18-5905



18-5902
18-5902
18-5902
18-5902
18-5902
18-5901
18-5902
18-5902
18-5902
18-5902
18-5901
18-5902
18-5902
18-5902
18-5902
18-5902
18-5902






18-5902

18-5902
18-5902

18-5902

18-5902

18-5902




18-5902

18-5902

18-5902
18-5902
18-5902


18-5902
18-5902
18-5902
18-5902
18-5902

Reman
Alternator

18-5913
18-5913
18-5913
18-5908
18-5907
18-5911
18-5902
18-5919
18-5913
18-5913
18-5913
18-5913
18-5603
18-5603
18-5913
18-5908
18-5907
18-5908
18-5907
18-5913
18-5913
18-5908
18-5908
18-5907
18-5908
18-5907
18-5910
18-5910
18-5913
18-5913
18-5913
18-5908
18-5908
18-5908
18-5908
18-5908
18-5907
18-5908
18-5908
18-5908
18-5908
18-5907
18-5908
18-5908
18-5908
18-5908
18-5908
18-5908
18-5913
18-5913
18-5913
18-5913
18-5913
18-5913
18-5908
18-5913
18-5908
18-5908
18-5913
18-5908
18-5913
18-5908
18-5913
18-5908
18-5913
18-5913
18-5913
18-5913
18-5908
18-5913
18-5908

18-5908
18-5908
18-5908
18-5913

18-5908
18-5908
18-5908
18-5908
18-5908

NLA for models prior to S/N 4167000

PG 260 (9-1/4" long)
PG260F1 (8-1/2" long)
RH Rotation
Standard ignition

18-5951
18-5951
18-5951











18-5951
18-5951
18-5951
18-5951

18-5951
18-5951











18-5951
18-5951
18-5951


18-5951
18-5951
18-5951



18-5951









18-5951





























J

New
Alternator

18-5960
18-5960
18-6293 J
18-5957
18-5957
18-5957
18-5966
18-5966
18-5966
18-5966
18-6293 J
18-6293 J
18-6293 J
18-6293 J
18-6293 J

18-5957
18-5957
18-5957
18-5957
18-5966
18-5957
18-5957
18-5966
18-5966
18-5966
18-5966
18-5966
18-5965
18-6293
18-5966
18-5966
18-5965
18-6293
18-5957
18-5957
18-5957
18-5966
18-5966
18-5957
18-5957
18-5957
18-5966
18-5966
18-5966
18-5957
18-5966

18-5966
18-5966
18-5965
18-6293
18-5965
18-6293
18-5965
18-5957
18-5966
18-5966




18-5966
18-5966
18-5965
18-6293
18-5966

18-5966

18-6298
18-5966
18-5966


18-6298

18-5966
18-5966
18-5965
18-6293

I/O MERCRUISER - Electrical System

Model #

Thunderbolt ignition
Thunderbolt IV
Thunderbolt V
Transmission models
Delco Style

539