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HP/ Liter/ Model# :
Year:

HP/ Liter/ Model#

CYL

Year

Serial #

Sierra Ignition Coil

[110](153cid) L[4] 1963-1966 1537370-2044033 (13)18-5433
[120](153cid) 2.5L L[4] 1964-1989 1666601-0C853255 (26)18-5433
[140](181cid) 3.0L L[4] 1968-1989 2508261-0C856558 (26)18-5433
[3.0]L L[4] 1990-1995 0C856559 - 0F603999 (27)18-5433
[3.0]L L[4] 1990-2001 0C856559 & UP 18-5443
[3.0] LX L[4] 1990-1995 0C856559 - 0F603999 (17)18-5433
[3.0]LX L[4] 1990-2001 0C856559 & UP (27)18-5443
[160] (250cid) L[6] 1967-1981 2048022-5813433 18-5433
[165] (250cid) L[6] 1967-1981 2048022-5813433 (17)18-5433
[200] (292cid) L[6] 1969 2453769-2712072 18-5433
[470] (224cid) L[4] 1976-1984 4208730 - 6916778 18-5433
[485] (224cid) L[4] 1976-1984 4208730 - 6916778 (13)18-5433
[488] (224cid) L[4] 1976-1984 4208730 - 6916778 (13)18-5433
[165] (224CID) L[4] 1985-1989 6916779 & UP (13)18-5433
[170] (224CID) L[4] 1985-1989 6916779 & UP (13)18-5433
[190] (224CID) L[4] 1985-1989 6916779 & UP (13)18-5433
[180]LX L[4] 1987-1989 0B436391 & UP (13)18-5433
[180]LX L[4] 1987-1989 0B436391 & UP (13)18-5433
[185] (229cid) 4bbl V[6] 1983-1984 6330183 - 6919655 (13)18-5433
[175] 4.3 (262cid) 2bbl V[6] 1985-1993 6919656-0F000877 (13)18-5438
[185] 4.3 (262cid) 2bbl V[6] 1985-1993 6919656-0F000877 (13)18-5438
[205] 4.3LX (262cid) 4bbl V[6] 1985-1996 0A331455-0F802999 (3)18-5438
[4.3]L Alpha(Gen+) V[6] 1996-2001 0F803000 & UP (3)18-5438
[4.3]L Bravo(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5438
[4.3]LH Alpha(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5438
[4.3]LH Bravo(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5438
[4.3]LX Alpha(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5438
[4.3]LX Bravo(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5438
[4.3]LXH Alpha(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5438
[4.3]LXH Bravo(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5438
[4.3]L EFI,262 Mag(TBI)(Gen+) V[6] 1996-1998 OF80300- 0L359999 (11)18-5443
[4.3]L EFI(TBI) (Gen+) V[6] 1999-2001 0l360000 & UP (11)18-5438
[190]GM(283cid) V[8] 1963-1964 1564539-1730903 (11)18-5438
[215] MCM & MIE Ford(302cid) V[8] 1970-1972 2781153-3563181 (11)18-5433
[215] MCM & MIE Ford(302cid) V[8] 1970-1972 2781153-3563181 (17)18-5433
[225] MCM & MIE Ford(302cid) V[8] 1973-1974 3385721-4166999 (20)18-5433
[225] MCM & MIE Ford(302cid) V[8] 1973-1974 3385721-4166999 18-5433
[225] MCM & MIE Ford(302cid) V[8] 1973-1974 3385721-4166999 (13)18-5433
[233] MCM & MIE Ford(351w cid) V[8] 1975-1977 4173000-4902304 (4)18-5433
[233] MCM & MIE Ford(351w cid) V[8] 1975-1977 4173000-4902304 (2)18-5433
[233] MCM & MIE Ford(351w cid) V[8] 1975-1977 4173000-4902304 (4)18-5433
[888] 188 Ford (302cid) V[8] 1971-1977 3108723-4887829 (2)18-5433
[888] 188 Ford (302cid) V[8] 1971-1977 3108723-4887829 (15)18-5433
[888] 188 Ford (302cid) V[8] 1971-1977 3108723-4887829 (30)18-5433
[888] 188 Ford (302cid) V[8] 1971-1977 3108723-4887829 (3)18-5433
[255] MCM & MIE Ford(351w cid) V[8] 1973-1974 3385721-4166999 (15)18-5433
[255] MCM & MIE Ford(351w cid) V[8] 1973-1974 3385721-4166999 (15)18-5433
[198]/ 898 MCM & MIE GM(305cid) V[8] 1977-1982 4776402-6218461 (4)18-5433
[198]/ 898, 5.0L GM (305cid) V[8] 1983-1984 6218462-6899057 (3)18-5438
[200]/ 5.0L GM (305cid) V[8] 1985-1995 6218462 - F600999 (2)18-5438
[200]/ 5.0L GM (305cid) V[8] 1987-1995 0B525982-0F600999 (15)18-5438
[225] MCM GM (327cid) V[8] 1963-1969 1539620-2694014 (2)18-5433
[228] MCM & MIE GM(305cid) V[8] 1977-1984 4765100 - 6218461 (2)18-5433
[228]GM(305cid) V[8] 1985-1986 6218462-6899268 (11)18-5438
[230]/ 5.0L/LX MIE (305cid) V[8] 1981-1995 5907058-0F600999 (11)18-5438
[5.0]L Alpha V[8] 1998-2001 0L015751 & up (24)18-5438
[5.0]L Bravo(Gen+) V[8] 1998-2001 0L015751 & up (13)18-5438
[5.0]L EFI(Gen+) V[8] 1998 0L012502-0L339999 18-5442
[5.0]L EFI (Gen +) V[8] 1999-2001 0L331631 & up (2)18-5438
[250]GM(350cid) V[8] 1977 4768000 - 4908849 (11)18-5433
[255]/ 260MCM & MIE(350cid) V[8] 1975-1982 3258728-6218461 (31)18-5433
[255]MCM & MIE (350cid) V[8] 1975-1980 4498701-5907057 (24)18-5433
[260]/ 5.7L MCM & MIE [LH](350cid) V[8] 1982-1994 6218462- 0F600999 (24)18-5438
[350]MAG/ 5.7L MCM & MIE [LH](350cid) V[8] 1982-1994 6218462- 0F600999 (13)18-5438
[260]/ 5.7L SKI/ ALPHA/ BRAVO(350cid) V[8] 1987-1995 0B525982-0F600999 (15)18-5438
[350]MAG/ 5.7L SKI/ ALPHA/ BRAVO(350cid) V[8] 1987-1995 0B525982-0F600999 18-5438
[260]/ 5.7L ALPHA/ BRAVO(350cid) V[8] 1987-1995 0B525982-0F600999 (2)18-5438
[350]MAG/ 5.7L ALPHA/ BRAVO(350cid) V[8] 1987-1995 0B525982-0F600999 (2)18-5438
[350]MAG, 5.7L/ LX ALPHA & BRAVO + (Gen+) V[8] 1994-2001 0F353525 & up (15)18-5438
[5.7]L EFI & (Gen+) V[8] 1995-1998 0F225560-0L339999 (11)18-5442
[5.7]L EFI & (Gen+) V[8] 1999-2001 0L325977 & up (11)18-5442
[5.7]L SKI V[8] 1985-1995 0A338533-0F775199 (24)18-5433
[5.7]L SKI V[8] 1985-1995 0A338533-0F775199 (24)18-5433
[5.7]L SKI V[8] 1987-1997 0B514627-0K999999 (22)18-5438
[5.7]L SKI V[8] 1987-1995 0B514627-0F775199 (22)18-5433
[5.7]L SKI V[8] 1998-2001 0L002005 & up (23)18-5438
[5.7]LX & BRAVO EFI + (Gen+) V[8] 1996-2001 0F752400-0K999999 (13)18-5442
[350] MAG ALPHA EFI(Gen+) V[8] 1996-1997 0F800300-0K999999 (20)18-5442
[350]MAG BRAVO MPI &(Gen+) V[8] 1995-1998 0F415189-0L325952 (2)18-5443
[350]MAG MPI MIE (Gen+) V[8] 1998-2001 0L002008-0L302199 (3)18-5443
[350]MAG EFI SKI V[8] 1994-1996 0F215561-0F820706 (11)18-5442
[350]MAG EFI SKI &(Gen+) V[8] 1996-1997 0F820707-0K999999 (22)18-5443
[350]MAG MPI SKI &(Gen+) V[8] 1995-1998 0F350583-0L304599 (11)18-5443
BLACK SCORPION SKI(Gen+) (350cid) V[8] 1996 0F800000-0K040000 (20)18-5443
BLACK SCORPION SKI(Gen+) (350cid) V[8] 1997-1998 0K040001-0K999999 (13)18-5443
BLACK SCORPION SKI(Gen+) (350cid) V[8] 1999-2001 0L002700 & up (13)18-5443
[350]MAG MPI (Gen+) & MIE(Gen+) V[8] 1998-2001 0L302200 & up (13)18-5438
[350] MAG HORIZON MIE V[8] 1999-2001 0L304700 & up 18-5438
[350]MAG MPI SKI(Gen+) V[8] 1999-2001 0L304600 & up (13)18-5438
[350]MAG SKI V[8] 1991-1996 OD505450-0K040399 (13)18-5438
[350]MAG SKI V[8] 1991-1996 OD505450-0K040399 (13)18-5438
[350]MAG SKI V[8] 1991-1997 0D505450-0K999999 (13)18-5438
[280] TRS(350cid) V[8] 1975 4176250-4499390 (13)18-5433
[280] TRS(350cid) V[8] 1976 4499391-4770199 (13)18-5433
[300] (350cid) V[8] 1985-1989 0A543604-0C622418 (20)18-5438
[320]EFI (350cid) V[8] 1985-1989 0A543604-0C622418 18-5438
[377] SCORPION MCM(377cid) V[8] 1999-2000 0L416146 & up 18-5443
[377] SCORPION SKI(377cid) V[8] 1997-1998 0K000656 & up (20)18-5443
MX [6.2]L MPI (377cid) V[8] 2000-2001 0L680003 & up 18-5438
[330] MCM & MIE (454cid) V[8] 1977-1981 4623115-6083144 (20)18-5433
[330] 7.4L MCM & MIE(454cid) V[8] 1981-1992 5889914-0D715493 (24)18-5438
[340] 7.4L MCM & MIE(454cid) V[8] 1981-1992 5889914-0D715493 (22)18-5438
[370]TRS (454cid) V[8] 1978-1985 4179554-6721527 (23)18-5433
[370]TRS (454cid) V[8] 1978-1985 4883520-6721527 18-5433
[400]TRS (454cid) V[8] 1978-1985 4179554-6721527 (15)18-5433
[400]TRS (454cid) V[8] 1978-1985 4883520-6721527 (2)18-5433
[440]TRS (454cid) V[8] 1978-1985 4179554-6721527 (11)18-5433
[440]TRS (454cid) V[8] 1978-1985 4883520-6721527 (11)18-5433
[370] TRS(454cid) V[8] 1985-1987 6721528-0B714586 (13)18-5433
[420] (454cid) V[8] 1987-1993 0A398941-0D937011 (13)18-5438
[425](454cid) V[8] 1987-1993 0A398941-0D937011 (20)18-5438
[450](454cid) V[8] 1995-1996 0F347100-0F347277 18-5438
[454] MAG ALPHA V[8] 1986-1997 0A631894-OK999999 18-5438
[454] MAG BRAVO V[8] 1986-1997 0A631894-OK999999 18-5438
[454]-EFI,MAG MPI & HORIZON MIE V[8] 1994-2001 0F115700 & up 18-5443
[454] MAG MPI HORIZON MIE V[8] 1998-2001 0L002200-0L086000 18-5443
[460]GM TRS V[8] 1983-1986 6180970-6181046 18-5433
[460]GM TRS V[8] 1983-1986 6180970-6181046 (2)18-5433
[500]GM &(Gen+) (502cid) V[8] 1994-2000 0F213293 & up 18-5438
[500]GM EFI (502cid) V[8] 1998-2000 0L001477 & up (11)18-5443
[502]GM EFI & MAG MPI(502cid) V[8] 1993-1998 0D840650-0L085000 (11)18-5443
[502]GM MAG (502cid) V[8] 1990-1993 0C878221-OF114528 18-5438
[502]GM MAG (502cid) V[8] 1998-2001 0L085001 & up (2)18-5443
[8.2]L GM MPI MIE (502cid) V[8] 1996-2001 0F19620 & up (6)18-5443
[8.2]L GM MPI MIE (502cid) V[8] 1990-1996 0C878221-0F819619 (2)18-5438
[525]GM SC(502cid) V[8] 1991-1995 0D456000-0F877734 (6)18-5438
[525]GM SC(502cid) V[8] 1996-1997 0K000012 & up (2)18-5438
[575]GM SCI(502cid) V[8] 2000-2001 0L306696 & up (6)18-5443
[600]GM SC(502cid) V[8] 1991-1993 OD456489-0D763875 (11)18-5438
[600]GM SC(502cid) V[8] 1993-2001 0D763876 & up (11)18-5438
[500]GM BULLDOG V[8] 1990-2000 0C577003 & up (11)18-5438
[575]GM(540cid) V[8] 1990-2000 0C577003 & up (11)18-5438
[800]GM SC (572cid) V[8] 1993-2001 0D763836 & up (32)18-5438

HP/ Liter/ Model#

CYL

Year

Serial #

Sierra Ignition Coil

Notes:
  • (2) : Mallory Ignition
  • (3) : Prestolite
  • (4) : Autolite Ignition
  • (6) : Holley
  • (11) : Thunderbolt IV
  • (13) : Delco
  • (15) : Mercury Ignition
  • (17) : Delco EST system
  • (20) : Mercury HEI
  • (22) : Thunderbolt IV(1) System
  • (23) : Thunderbolt V Ignition
  • (24) : Thunderbolt IV(2) System
  • (26) : Delco, With conventional ign.
  • (27) : Prestolite, With conventional ign.
  • (30) : Prestolite, With screw-down cap
  • (31) : Thunderbolt IV, Thunderbolt IV(2) System
  • (32) : Thunderbolt IV, Thunderbolt IV(1) System, Thunderbolt IV(2) System, Thunderbolt V Ignition
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Part # 18-5466
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Ignition Coil for Mercruiser, GLM 72114 - Sierra
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Sierra
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Based On 1 Review | Write Review
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easy to install bought with electronic ignition set
by Jason from Kennewick, Washington on May 14, 2016
No power gain or anything just worked like a coil should nothing special
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Average Customer Review for Sierra 18-5433 Ignition Coil
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Based On 5 Reviews | Write Review
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perfect fit
by Wade from Lexington, South Carolina on July 30, 2014
Performs great
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Full StarFull StarFull StarFull StarFull Star
1986 Mercruiser 3.0ltr ignition coil(Sierra)
by D. from Barrie, Ontario on August 04, 2013
Great price, quick and easy to instal. Two thumbs up.
(2 of 3 people found this review helpful)
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Ok
by Zach from West Valley, Utah on September 07, 2012
I have a 1974 302 Ford. This ignition coil didn't work for my engine.
(1 of 3 people found this review helpful)
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Love this site
by Stephen from Laurel, Maryland on August 22, 2011
I have ordered from this site a few times and I always get the right part in a timely fashion. Awesome site.
(0 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
sierra coil
by Richard from Rushville, Indiana on June 03, 2011
Great product and thanks to Iboats I received it quickly. Thanks
(1 of 2 people found this review helpful)
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Average Customer Review for Sierra 18-5438 Ignition Coil
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Based On 14 Reviews | Write Review
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Coil
by Brian from Fisher, Minnesota on August 02, 2016
Works like it should.
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Full StarFull StarFull StarFull StarFull Star
Great Product
by Gerald from London, Kentucky on July 18, 2016
Reasonably priced and customer service is second to none
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Shipping Service
by John from Grand Rapids, Michigan on June 23, 2016
Ordered two Sierra 18-5438 ignition coils on Monday June 20th and paid additional money for 2 day service so I would have them before Friday. iboats billed my PayPal account on June 20th for the full amount. I just checked today, Thursday June 23 and iboats could not confirm if they had shipped yet. They gave me an excuse that maybe Sierra did not have them in stock. This is a standard ignition coil for all 454 mercury engines. So far I rate their service well below what I would expect for an online company. What a waste of money on my part. Before ordering I would suggest you call them to get an exact ship date. Bad company.
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Not a Timely Delivery
by John from Seattle, Washington on June 12, 2014
I ordered this part six days ago (with two-day delivery) and it has not shipped yet. Also, no emails from IBoats.com about any delays.
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Great
by Kenneth from Patterson, New York on July 07, 2013
My old one was 21 years old and corroding. I ordered and got it in three days. It works fine!
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Boat stuff
by James from Gibsons, British Columbia on September 17, 2012
Arrived when promised and as ordered. Unfortunately the Mallory coil I wanted was out of stock.
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excellent
by Mark from Charlotte, North Carolina on September 04, 2012
This Ignition Coil solved my starting problem when the engine is hot. Great product at a great price.
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Perfect replacement
by William from Niskayuna, New York on August 19, 2012
Worked perfectly. Exact replacement.
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HEI Coil
by Ben from Quarryville, Pennsylvania on August 14, 2012
This was the ticket, After a year of trouble with my boat I replaced the standard coil with a HEI coil and now the boat runs great!
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Mercruiser coil
by Wayne from Greenbrier, Arkansas on July 29, 2012
Great price and fast shipping.
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coil
by John from Eagle River, Wisconsin on August 04, 2011
right price, right part
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Quick service
by Michael from Bremen, Alabama on July 27, 2011
Helpful lady on the phone
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ignition coil
by Curtis from Columbia, Missouri on July 12, 2011
you never can go wrong useing mercruiser parts
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Coil
by Ray from Fruita, Colorado on July 07, 2011
As described and fast shipping.
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Average Customer Review for Ignition Coil - 18-5443 - Sierra
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Based On 4 Reviews | Write Review
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Parts ordered
by Shawnna from Williams Lake, British Columbia on May 17, 2016
Coil was identical to what I ordered...Thank You
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Works well.
by Christopher from Cedar Park, Texas on September 12, 2013
Great description. Product performs great.
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coil
by Daniel from Edgecomb, Maine on July 18, 2011
The product was delivered in a timely manner and I had It in the boat and running , an excellent product and a great company .
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Review for Ignition Coil for Volvo Penta 3854002-7, Mercruiser 817378T, OMC Sterndrive/Cob
by a Customer on August 12, 2009
(3 of 4 people found this review helpful)
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Q:
Hi, can the 18-8899 be used in place of the Indmar 817378 ? Thank you.?
A:
No, Sierra says that you should replace the Indmar 817378 with the part # 18-5443.


Q:
Can this be used to replace 3854002 looking for performance ignition coil?
A:
No.


Q:
How many ohms internal resistance does the coil have?
A:
The technicians at Sierra have said that it is an external resistance coil, and that it has no internal ohm resistance. If you have any further questions contact us at the number at the top of the page.


Q:
My 1985 3.0 mercruiser does not have an external resistor, is this the right coil?
A:
The technicians at Sierra have affirmed that all of the 3.0 Mercruiser engines from that year should have an external resistor. If yours does not, then you will want to consult a Mercury dealer for guidance on what to get. Because all of the information we have on this motor points to this ignition coil working for it.


Q:
Is this the right coil for a 1996 ,4.3 v6 190 hp?
A:
Since it is an aftermarket part the way we cross reference varies. We would need to know manufacturer and model/serial number. Contact us at the number at the top of the page and we can look into it further.


Q:
I have a 1977 mercruiser 151 cu in. 120hp 4 cylinder engine. It does not have any resister between the distributor and the coil, therefore, I must have a resitor wire and not an external resistor. Is this the right coil for this application.?
A:
No this would not be correct. This is for an external resistor. We would need serial number to identify correct one at this point. Contact us at the number at the top of the page and we can look into it.


Q:
Is there an HEI version ?
A:
We sell aftermarket parts and this is the only version Sierra makes for this engine.


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