OMC STERNDRIVE/COBRA
Ignition System
PKG. OF 10
PKG. OF 10
18-5224
18-5750
SPARK PLUG WIRE TERMINAL
UNIVERSAL
UNIVERSAL SPARK PLUG BOOTS
Replaces: Mercury 20121
SPARK PLUG BOOT
Supplied complete w/Terminal Connector
OMC 510364
8mm
Replaces: OMC 581027, 580339
PREMIUM MARINE SPARK PLUG WIRE LEADS
Premium Marine Wire Leads
Magnetic Suppression Core
Manufactured for your specific application
5 Kevlar® core for maximum durability and long life.
5 Durable stainless steel wound conductor
for maximum horsepower and engine performance.
5 Premium silicone jacketing and boots for
the ultimate in high temperature protection.
5 Superior RFI suppression for the most sensitive
electronic system.
5 Corrosion resistant stainless steel spark
OE style boots provide a sealed
plug and distributor terminals for maximum conductivity.
barrier against heat, dirt and moisture.
Model
Ignition Type
Cyl.
O.E.M. #
Part #
2.3L
Conventional
4
503747
100/ 110/ 120/ 2.5L/ 140/ 3.0L/ 140 Jet
Conventional
4
503748
3.0L/ HO
EST Electronic
4
503749
3.0L/ HO
EST Electronic
4
503749
3.0L/ HO
EST Electronic
4
503749
4.3L
EST Electronic
6
503751
3.8L/ 4.3L
Conventional
6
503750
370 (King Cobra)/ 454/ 7.4L/ 502/ 8.2L
Conventional
8
503752, 503755
503752, 503755 (1)
(1)
175/ 185/ 190/ 200/ 5.0L - 5.7L (GM)
Conventional
8
503752, 503755 (1)
(1)
225/ 230/ 235/ 240/ 250/ 260
Conventional
8
5.0L - 5.8L EFI (Ford)
EST Electronic
8
503754
5.0L - 5.8L (Ford)
Conventional
8
503753
460 (King Cobra)
Conventional
8
N/A
8.1L / 496
Distributorless
8
7.4L / 8.2L Ford V8
DDS
8
503756
(1)
Models with Mallory side terminal caps
Engine
Cyl.
Year
Kit
Engine
Cyl.
Year
Kit
(3)
190
8
1975-77
2.3L
4
1987-90
200
8
1979-81
2.5L
4
1982-86
(8)
225
8
1978
3.0L
4
1982-90
➃
225
8
1976
3.0L/3.0LH.O.
4
1991-92
(10)
230
8
1979-81
3.0L/3.0LH.O.
4
1990-94
(10)
230IBLH
8
1976
2.5/3.0L110-140hp
4
1964-90
230IBLH
8
1976
3.8L
V6
1981-86
(9)
235
8
1975-77
4.3L
V6
1985-90
(10)
240
8
1978
4.3L
V6
1994
250
8
1979
5.0L
8
1982-88
(5)
260
8
1979-81
5.0L
8
1989-90
260IBLH
8
1976
5.7L
8
1982-89
SPARK PLUG WIRE SETS
260IBLH
8
1976
5.7LKingCobra
8
1988
8mm
262KingCobra
V6
1989
5.8L
8
1989-90
(6)
(1)
305CIDIBLH
8
1979-82
7.5L
8
1987
1974:FF and R only
(5)
(2)
305CIDIBRH
8
1977-82
7.5LKingCobra
8
1987
1974:Model R1 only
(7)
(3)
305CIDIBRH
8
1979-82
1975:Model A1 only
80
4
1968-69
➃
(5)
Model M only
305CIDIBLH
8
1977-82
100
4
1972-73
(5)
(5)
Models w/o closed cooling
350CIDIBRH
8
1977-82
110
4
1964
(6)
V-Drive model w/ closed cooling
(7)
(1)
350CIDIBRH
8
1979-82
120
4
1965-74
(7)
Direct Drive Model w/ closed cooling
(2)
350KingCobra
8
1989
120
4
1974-81
(8)
1990 Models 302BMRPWS and
(1)
370KingCobra
8
1988
140
4
1973-74
302BPRPWS
(2)
454CIDIB
8
1979-82
140
4
1974-81
(9)
1990 (2 BBL) carb
460KingCobra
8
1988-89
140Jet
4
1973
(10)
Delco Digital & EST Ignition
{1}
(3)
8.1L/496
8
2000&up
175
8
1975-77
{1}
Distributorless Ignition
185
8
1978-80
{2} Priced per Package
731
