Sierra Marine Parts Catalog: Spark Plug Wires/Kits
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Engine
Cyl.
Year
Kit
Engine
Cyl.
Year
Kit
SPARK PLUG WIRE SETS
8mm
➀
1974:FF and R only
➁
1974:Model R1 only
➂
1975:Model A1 only
➃
Model M only
➄
Models w/o closed cooling
➅
V-Drive model w/ closed cooling
➆
Direct Drive Model w/ closed cooling
➇
1990 Models 302BMRPWS and
302BPRPWS
➈
1990 (2 BBL) carb
➉
Delco Digital & EST Ignition
➊
Distributorless Ignition
➋
F suf¡x models only
➀
Models with Mallory side terminal caps
UNIVERSAL
SPARK PLUG BOOT
8mm
➌
SPARK PLUG WIRE TERMINAL
Replaces: Mercury 20121
OMC 510364
PKG. OF 10
➌
UNIVERSAL SPARK
PLUG BOOT
Supplied complete w/Terminal Connector
Replaces: OMC 581027, 580339
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
18-8803-2, 18-8823-1
➀
225/ 230/ 235/ 240/ 250/ 260
Conventional
8
503752, 503755
➀
18-8803-2, 18-8823-1
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
2.3L
4
1987-90
2.5L
4
1982-86
3.0L
➇
4
1982-90
3.0L/3.0L H.O.
4
1991-92
3.0L/3.0L H.O.
➉
4
1990-94
2.5/3.0L 110-140hp
➉
4
1964-90
3.8L
V6
1981-86
4.3L
➈
V6
1985-90
4.3L
➉
V6
1994
5.0L
8
1982-88
5.0L
8
1989-90
5.7L
8
1982-89
5.7L King Cobra
8
1988
5.8L
8
1989-90
7.4L
➋
8
1991
7.4L/8.2L
8
1992-94
7.5L
8
1987
7.5L King Cobra
8
1987
80
4
1968-69
100
4
1972-73
110
4
1964
120
➀
4
1965-74
120
➁
4
1974-81
140
➀
4
1973-74
140
➁
4
1974-81
140 Jet
4
1973
175
➂
8
1975-77
185
8
1978-80
190
➂
8
1975-77
200
8
1979-81
225
8
1978
225
➃
8
1976
230
8
1979-81
230 IB LH
8
1976
230 IB LH
8
1976
235
8
1975-77
240
8
1978
250
8
1979
260
➄
8
1979-81
260 IB LH
8
1976
260 IB LH
8
1976
262 King Cobra
V6
1989
305 CID IB LH
➅
8
1979-82
305 CID IB RH
➄
8
1977-82
305 CID IB RH
➆
8
1979-82
305 CID IB LH
➄
8
1977-82
350 CID IB RH
➄
8
1977-82
350 CID IB RH
➆
8
1979-82
350 King Cobra
8
1989
370 King Cobra
8
1988
454 CID IB
8
1979-82
460 King Cobra
8
1988-89
8.1L / 496
➊
8
2000 & up
➌
Priced per Package
★
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
plug and distributor terminals for maximum conductivity.
Premium Marine Wire Leads
Magnetic Suppression Core
Manufactured for your specific application
PREMIUM MARINE SPARK PLUG WIRE LEADS
OE style boots provide a sealed barrier
against heat, dirt and moisture.
PKG. OF 10
IGNITION WIRE
Metallic Core
100' Spool
7mm Hypalon
I/O—OMCSTERNDRIVE/COBRA-IgnitionSystem