Sierra Marine Parts Catalog: OMC Sterndrive Cobra
PKG. OF 10
PKG. OF 10
IGNITION WIRE
UNIvERSAL SPARK
Metallic Core
PLUG BOOT
SPARK PLUG WIRE TERMINAL
UNIvERSAL
100' Spool
SPARK PLUG BOOT
Replaces: Mercury 20121
Supplied complete w/Terminal Connector
Replaces: OMC 581027, 580339
OMC 510364
7mm Hypalon
8mm
PREMIUM MARINE SPARK PLUG WIRE LEADS
Premium Marine Wire Leads
Magnetic Suppression Core
Manufactured for your specific application
★ Kevlar� core for maximum durability and long life.
★ Durable stainless steel wound conductor
for maximum horsepower and engine performance.
★ Premium silicone jacketing and boots for
the ultimate in high temperature protection.
★ Superior RFI suppression for the most sensitive
electronic system.
★ Corrosion resistant stainless steel spark
OE style boots provide a sealed barrier
plug and distributor terminals for maximum conductivity.
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
175/ 185/ 190/ 200/ 5.0L - 5.7L (GM)
Conventional
8
503752, 503755 ➀
➀
225/ 230/ 235/ 240/ 250/ 260
Conventional
8
503752, 503755 ➀
➀
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 V8
DDS
8
503756
Models with Mallory side terminal caps
➀
Engine
Cyl.
Year
Kit
Engine
Cyl.
Year
Kit
185
8
1978-80
2.3L
4
1987-90
190
8
1975-77
2.5L
4
1982-86
➂
8
1979-81
200
3.0L
4
1982-90
➇
225
8
1978
3.0L/3.0L H.O.
4
1991-92
225
8
1976
3.0L/3.0L H.O.
4
1990-94
➃
➉
230
8
1979-81
2.5/3.0L 110-140hp ➉
4
1964-90
230 IB LH
8
1976
3.8L
V6
1981-86
230 IB LH
8
1976
4.3L
V6
1985-90
➈
235
8
1975-77
4.3L
V6
1994
➉
240
8
1978
5.0L
8
1982-88
250
8
1979
5.0L
8
1989-90
260
8
1979-81
5.7L
8
1982-89
➄
260 IB LH
8
1976
5.7L King Cobra
8
1988
SPARK PLUG WIRE SETS
260 IB LH
8
1976
5.8L
8
1989-90
8mm
262 King Cobra
V6
1989
7.4L
8
1991
➋
305 CID IB LH
8
1979-82
7.4L/8.2L
8
1992-94
➅
1974:FF and R only
➀
305 CID IB RH
8
1977-82
7.5L
8
1987
1974:Model R1 only
➄
➁
305 CID IB RH
8
1979-82
7.5L King Cobra
8
1987
1975:Model A1 only
➆
➂
Model M only
305 CID IB LH
8
1977-82
80
4
1968-69
➃
➄
Models w/o closed cooling
350 CID IB RH
8
1977-82
100
4
1972-73
➄
➄
V-Drive model w/ closed cooling
➅
350 CID IB RH
8
1979-82
110
4
1964
➆
Direct Drive Model w/ closed cooling
➆
350 King Cobra
8
1989
120
4
1965-74
➀
1990 Models 302BMRPWS and
➇
370 King Cobra
8
1988
120
4
1974-81
➁
302BPRPWS
454 CID IB
8
1979-82
4
1973-74
140
1990 (2 BBL) carb
➀
➈
460 King Cobra
8
1988-89
140
4
1974-81
Delco Digital & EST Ignition
➁
➉
Distributorless Ignition
8.1L / 496
8
2000 & up
140 Jet
4
1973
➊
➊
F suffix models only
175
8
1975-77
➋
➂
752
➌ Priced per Package