Refine Parts List
HP/ Model :
Cyl :
Stroke:

HP/ Model

Cyl

Stroke

Serial Start

Serial End

Genuine Mercury Coil

Sierra Coil

2.5 CD Ign 1 2-Stroke 0A855097 & UP -18-5182
3 CD Ign 1 2-Stroke 0A855097 & UP -18-5182
3.3 1 2-Stroke 0D901217 & UP -18-5182
5 Phelon 1 2-Stroke 338136 & UP -18-5178
5 Phelon 1 2-Stroke 574128 786612 -18-5185
5 Phelon 1 2-Stroke 0A855097 0G710612 -18-5185
6 Phelon 2 2-Stroke 1184570 UP -18-5178
6 2 2-Stroke 1408611 1610264 -18-5178
6 2 2-Stroke 0A197112 0T800999 832757A4 18-5186
7.5 2 2-Stroke 214324 Up -18-5178
8 2 2-Stroke 0A197112 UP 832757A4 18-5186
8 (209cc) (ignition coil assembly) 2 4-Stroke 0R042475 Up 803559A02 -
8 (209cc) (ignition charge coil) 2 4-Stroke 0R042475 Up 803844T01 18-25513
9.8 2 2-Stroke 1470349 1865778 -18-5178
9.9 2 2-Stroke 0A197112 UP 832757A4 18-5186
9.9 (209cc) (ignition coil assembly) 2 4-Stroke 0R042475 Up 803559A02 -
9.9 (209cc) (ignition charge coil) 2 4-Stroke 0R042475 Up 803844T01 18-25513
210 CC Sail Power (9.9) 2 2-Stroke A918999 & UP -18-5186
10 Phelon 2 2-Stroke All All -18-5178
10 2 2-Stroke 595628 UP -18-5178
10 Seapro 2 2-Stroke 0D281000 UP 832757A4 18-5186
XR10 2 2-Stroke 0D281000 0T979999 832757A4 18-5186
150 (15 hp) 2 2-Stroke 1200114 1499331 -18-5178
15 2 2-Stroke B292414 & UP -18-5186
15 2 2-Stroke 0D281000 UP 832757A4 18-5186
15 Seapro XD 2 2-Stroke 0G760300 UP 832757A4 18-5186
15 Seapro 2 2-Stroke 0G044027 UP 832757A4 18-5186
18 2 2-Stroke 5837437 UP -18-5186
18 (bullet conn) 2 2-Stroke 6443973 UP -18-5186
20 2 2-Stroke 860979 1592567 -18-5178
20 2 2-Stroke 3537531 3755884 -18-5186
20 2 2-Stroke 6443973 0G044026 -18-5186
20 2 2-Stroke 0G044027 0T979999 832757A4 18-5186
20 JET 2 2-Stroke 0G044027 UP 832757A4 18-5186
22 2 2-Stroke 1158546 1499331 -18-5178
25 2 2-Stroke 5705532 6443972 -18-5186
25 (nut and Bullet conn) 2 2-Stroke 6443973 Up -18-5186
25 2 2-Stroke B238464 0G044026 -18-5186
25 2 2-Stroke 0G044027 Up 832757A4 18-5186
25 Seapro 2 2-Stroke 0G044027 0T979999 832757A4 18-5186
25 SUPER 15 2 2-Stroke 0G044027 0T979999 832757A4 18-5186
30 Jet 4 2-Stroke C159200 0G589999 -18-5186
35 (nut and Bullet conn) 2 2-Stroke 6445653 B110788 -18-5186
35 2 2-Stroke B110789 & UP -18-5186
40 2 2-Stroke 3336258 6443973 -18-5186
40 4 2-Stroke 0C159200 & UP -18-5186
40 EFI 4 4-Stroke 1C050252 Up 8M0044991 -
40 EFI Jet 4 4-Stroke 1C051324 Up 8M0044991 -
45 4 2-Stroke 5531630 & UP -18-5186
45 Jet 3 2-Stroke 0G290584 0G589999 832757A4 18-5186
45 Italy 4 4-Stroke 0G231123 T178499 -18-5180
50 3 2-Stroke 6428681 0G290584 -18-5186
50 3 2-Stroke 0G290585 0G589999 832757A4 18-5186
50 4 2-Stroke 5193259 UP -18-5186
50 4 4-Stroke 0G231123 0T178499 -18-5180
50 Bigfoot 4 4-Stroke 0G231123 0T178499 -18-5180
50 EFI 4 4-Stroke 1C050252 Up 8M0044991 -
55 3 2-Stroke D000750 0G290584 -18-5186
55 3 2-Stroke 0G290585 0G589999 832757A4 18-5186
60 3 2-Stroke 6428681 0G290584 -18-5186
60 3 2-Stroke 0G290585 0G589999 832757A4 18-5186
60 EFI 4 4-Stroke 1C050252 Up 8M0044991 -
65 Jet 3 2-Stroke 0D283222 0G760299 832757A4 18-5790
65 Jet 6 4-Stroke 2B080987 Up 8M0044991 -
70 3 2-Stroke 5579017 6428680 -18-5186
70 3 2-Stroke 0C272000 0D283221 -18-5186
70 6 2-Stroke 1296411 1566239 -18-5433
75 3 2-Stroke 0D283222 0G760299 832757A4 18-5186
75 3 2-Stroke C272000 0D283221 -18-5186
75 4 2-Stroke 6432901 & UP -18-5186
75 / 75(BODENSEE) 4 4-Stroke 0G960500 1B226999 804271T -
75 EFI 4 4-Stroke 1B366823 2B059605 880615T01 -
75 EFI 4 4-Stroke 2B080987 Up 8M0044991 -
80 3 2-Stroke 0A996142 UP -18-5186
80 4 2-Stroke 5141097 6432900 -18-5186
80 6 2-Stroke 1335465 1566239 -18-5433
80 Jet 4 2-Stroke 0D283222 0G760299 832757A4 18-5186
80 EFI 4 4-Stroke 1B366823 2B059605 880615T01 -
80 EFI 4 4-Stroke 2B080987 Up 8M0044991 -
80 Jet 4 4-Stroke 2B080987 Up 8M0044991 -
85 6 2-Stroke 1460999 1766823 -18-5433
90 3 2-Stroke 0A996142 0D283221 -18-5186
90 3 2-Stroke 0D283222 0G760299 832757A4 18-5186
90 6 2-Stroke 1766824 1869775 -18-5433
90 6 2-Stroke 5299506 & UP -18-5186
90 4 4-Stroke 0G960500 1B226999 804271T -
90 EFI 4 4-Stroke 1B366823 2B059605 880615T01 -
90 EFI 4 4-Stroke 2B080987 Up 8M0044991 -
95 6 2-Stroke 1869776 1935100 -18-5433
100 4 2-Stroke 0B209468 0D283221 -18-5186
100 4 2-Stroke 0D283222 0G760299 832757A4 18-5186
100 6 2-Stroke 1464949 2318585 -18-5433
100 EFI 4 4-Stroke 1B366823 2B059605 880615T01 -
100 EFI 4 4-Stroke 2B080987 Up 8M0044991 -
105 Jet 3 2-Stroke D082000 0G303045 -18-5186
105 Jet 3 2-Stroke 0G303046 0G760299 832757A4 18-5186
110 6 2-Stroke 1870204 2314955 -18-5433
110 Jet (2.5L) 6 2-Stroke 1B690542 1B490865 856991A1 18-5187
110 Jet (2.5L) (dual Coil Driver) 6 2-Stroke 1B690542 1B490865 859595T -
115 4 2-Stroke 0C100000 0D283221 -18-5186
115 4 2-Stroke 0D283222 0G437999 832757A4 18-5186
115 6 2-Stroke 5314656 & UP -18-5186
V-115 DFI (2.5L) 6 2-Stroke 0G960500 0T178499 856991A1 -
115 EFI 4 4-Stroke 1B366823 2B059605 880615T01 -
115 EFI 4 4-Stroke 2B080987 Up 8M0044991 -
125 4 2-Stroke D283222 0G437999 832757A4 18-5186
V-135 6 2-Stroke A904646 0G303045 -18-5186
V-135 6 2-Stroke 0G303046 0G960499 832757A4 18-5186
V-135 DFI (2.5L) 6 2-Stroke 0G760300 UP 856991A1 18-5187
V-135 DFI (2.5L) (dual Coil Driver) 6 2-Stroke 0T178500 Up 859595T -
135 Verado 4 4-Stroke 1B227000 Up 880615T01 -
140 Jet 6 2-Stroke D082000 0G303045 -18-5186
140 Jet 6 2-Stroke 0G303046 0G960499 832757A4 18-5186
140 6 2-Stroke 5327663 & UP -18-5186
V-1500, V-150 (Navy Blue) 6 2-Stroke 4868998 A904645 -18-5186
V-150 6 2-Stroke A904646 0G303045 -18-5186
V-150 6 2-Stroke 0G303046 0G960499 832757A4 18-5186
V-150 DFI (2.5L) 6 2-Stroke G590000 0G760299 -18-5186
V-150 DFI (2.5L) 6 2-Stroke 0G760300 UP 856991A1 18-5187
V-150 DFI (2.5L) (dual Coil Driver) 6 2-Stroke 0T178500 Up 859595T -
V-150 EFI 6 2-Stroke 0G303046 0G960499 832757A4 18-5186
V-150 XR2 6 2-Stroke 6616991 0A904645 -18-5186
V-150 XR4 6 2-Stroke 0B242885 0D819999 -18-5186
V-150 XR6 6 2-Stroke D820000 0G303045 -18-5186
V-150 XR6 6 2-Stroke 0G303046 0G960499 832757A4 18-5186
150 4 4-Stroke 1B905505 Up 8M0044991 -
150 Verado 4 4-Stroke 1B227000 Up 880615T01 -
Sportjet 175XR2 Jet Drive (Powerhead & Pump) 6 2-Stroke 0E151580 0E433153 832757A4 -
V-175 6 2-Stroke 5180109 0G303045 -18-5186
V-175 6 2-Stroke 0G303046 0G960499 832757A4 18-5186
V-175 DFI (2.5L) 6 2-Stroke 0T178500 B490865 856991A1 18-5187
V-175 DFI (2.5L) (dual Coil Driver) 6 2-Stroke 0T178500 B490865 859595T -
V-175 EFI 6 2-Stroke 0G303046 0G960499 832757A4 18-5186
V-175 XR1 (EFI) 6 2-Stroke 0C291520 0G129221 -18-5186
175 Verado 4 4-Stroke 1B227000 Up 880615T01 -
200 DFI 6 2-Stroke 0G386496 0G589999 -18-5183
200 DFI 6 2-Stroke 0G760300 0T800999 856991A1 18-5187
200 DFI (dual Coil Driver) 6 2-Stroke 0T178500 0T800999 859595T -
200 DFI (3.0L)(including DTS) 6 2-Stroke 0T980000 1B504988 856991A1 18-5187
200 DFI (3.0L)(including DTS) (dual Coil Driver) 6 2-Stroke 0T980000 1B504988 859595T -
V-200 6 2-Stroke 5363918 0G303045 -18-5186
V-200 6 2-Stroke 0G303046 0G960499 832757A4 -
V-200 EFI 6 2-Stroke 0C100861 0G303045 -18-5186
V-200 EFI 6 2-Stroke 0G303046 0G960499 832757A4 -
V-200 XR1 (EFI) 6 2-Stroke 0C291520 OG303045 -18-5186
200 Verado 4 4-Stroke 1B517159 Up 880615T01 -
200 Verado 6 4-Stroke 0T980000 Up 880615T01 -
200 PRO Verado 6 4-Stroke 2B034840 Up 880615T01 -
Sportjet 200 DFI Jet Drive (Powerhead) 6 2-Stroke 0E384500 0E435741 856991A1 18-5187
Sportjet 200 DFI Jet Drive (Pump) 6 2-Stroke 0E379931 0E428850 856991A1 18-5187
Sportjet 200 DFI Jet Drive (Pump) 6 2-Stroke 0M954922 0M964698 856991A1 18-5187
Sportjet 200 DFI M2 Jet Drive (Powerhead) 6 2-Stroke 0E384500 0E433351 856991A1 18-5187
Sportjet 200 DFI M2 Jet Drive (Pump) 6 2-Stroke 0E379931 0E423075 856991A1 18-5187
Sportjet 210 Carb Jet Drive (Powerhead) 6 2-Stroke 0E384500 0E433153 832757A4 -
Sportjet 210 Carb Jet Drive (Pump) 6 2-Stroke 0E379931 0E433153 832757A4 -
Sportjet 210 Carb M2 Jet Drive (Powerhead) 6 2-Stroke 0E373939 0E426999 832757A4 -
Sportjet 210 Carb M2 Jet Drive (Pump) 6 2-Stroke 0E370718 0E426999 832757A4 -
V-220 6 2-Stroke B117316 & UP -18-5186
225 DFI (includes 3.0L / DTS) 6 2-Stroke 0G760300 1B504988 856991A1 18-5187
225 DFI (includes 3.0L / DTS) (dual Coil Driver) 6 2-Stroke 0T178500 0T800999 859595T -
225 PRO XS DFI (3.0L) 6 2-Stroke 1B104549 1B426560 856991A1 18-5187
225 PRO XS DFI (3.0L) (dual Coil Driver) 6 2-Stroke 1B104549 1B426560 859595T -
V-225 6 2-Stroke 5628028 & UP -18-5186
225 Verado 6 4-Stroke 0T980000 Up 880615T01 -
250 6 2-Stroke C101891 & UP -18-5186
Sportjet 250 DFI Jet Drive (Powerhead & Pump) (including M2) 6 2-Stroke 0E407100 UP 856991A1 18-5187
250 Verado 6 4-Stroke 0T980000 Up 880615T01 -
250 PRO Verado 6 4-Stroke 1B830170 Up 880615T01 -
275 6 2-Stroke C101891 & UP -18-5186
275 Verado 6 4-Stroke 0T980000 Up 880615T01 -
300 3.4L 6 2-Stroke 5611648 & UP -18-5186
300 Verado 6 4-Stroke 1B517434 Up 880615T01 -
300 PRO Verado 6 4-Stroke 1B830170 Up 880615T01 -
350SCi Verado 6 2-Stroke 1B716557 Up 880615T01 -
Mercruiser 4.5L MPI 250 Alpha/Bravo, 4.5L MPI 250 Alpha/Bravo EC 6 4-Stroke 2A441953 Up 8M0044991 -

HP/ Model

Cyl

Stroke

Serial Start

Serial End

Genuine Mercury Coil

Sierra Coil

Refine Parts List
HP/ Model :
Cyl :
Stroke:
Price: $68.83
Discontinued
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(38% Off $111.78)
Part # 18-5178
(Discontinued)
Price: $87.73
Discontinued
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(8% Off $95.40)
Part # 18-5182
(Discontinued)
Price: $96.70
Discontinued
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Part # 18-5185
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(Discontinued)
Price: $113.95
(Out of stock)
Part # 18-5187
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(Out Of Stock)
Sierra
Average Customer Review for Sierra 18-5181 - Ignition Coil
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Based On 26 Reviews | Write Review
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great item
by Carlos from Keizer, Oregon on September 06, 2015
Great price
(5 of 10 people found this review helpful)
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johnson outboard parts
by Oneal from Hartselle, Alabama on November 05, 2014
very happy with parts and service. thank you, oneal
(5 of 9 people found this review helpful)
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Great Product
by Brandi from Dodge City, Kansas on October 07, 2014
We will definitely be ordering from you again. The product came in on time and had no problems. Very happy with the service.
(5 of 10 people found this review helpful)
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fast service
by Ronald from Duluth, Minnesota on September 27, 2014
Although I ordered the wrong coil, it came fast and returning was possible.
(5 of 8 people found this review helpful)
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Ignition coil for 73 Johnson 6hp
by Harv from Eagan, Minnesota on September 03, 2014
The new coil was correct. No wire modifications were necessary. I have good strong spark again! Replaced a cracked original coil.
(6 of 13 people found this review helpful)
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boat coils
by Larry from Pima, Arizona on November 01, 2013
I replaced the coils on my 1951 johnson tn 27 and they worked perfect.
(6 of 9 people found this review helpful)
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COIL
by Peter from Midland, Ontario on October 22, 2013
THANK YOU WILL RETURN TO SHOP LATER..
(5 of 8 people found this review helpful)
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They work
by Ron from Danielsville, Georgia on August 20, 2013
Brought a couple of old engines back to life.
(5 of 10 people found this review helpful)
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Great coils
by Scott from Corryton, Tennessee on May 27, 2013
Price was great , fast shipping !
(6 of 9 people found this review helpful)
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Satisfied
by Jean from St-Nicolas, Quebec on October 29, 2012
Ok
(6 of 13 people found this review helpful)
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Fast shipping and EZ to order with IBOATS.com
by Kevin from Oakbrook Terrace, Illinois on August 21, 2012
They are a perfect fit for my 1956 Evinrude 15HP engine.
(5 of 8 people found this review helpful)
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Fast shipping and EZ to order with IBOATS.com
by Kevin from Oakbrook Terrace, Illinois on August 21, 2012
Tested both coils, installed and running like new on my 1956 Evrinrude engine.
(5 of 8 people found this review helpful)
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25R17S Johnson
by Scott from Farmersburg, Iowa on August 12, 2012
Coils fit just fine. No problem getting the "gap" set. Motor runs like a top, first time in awhile. Had purchased Johnson OEM coils from another place before I got these here. Wouldn't fit, different part number on the coil, any other parts I need will be ordered from here.
(5 of 10 people found this review helpful)
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Innition Coil
by Robert from Tiverton, Ontario on August 05, 2012
I bought this kit for our 1952 3 HP Evinrude. Everything fit good. The little motor is running again. Very fast shipping to Canada!
(5 of 8 people found this review helpful)
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very nice coils
by Steven from Geneva, Nebraska on July 25, 2012
these coils fit perfectly and tested both just to be sure before install. they tested perfect. thanks iboats for another great product
(5 of 10 people found this review helpful)
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OMC coils
by Steven from Kenosha, Wisconsin on June 27, 2012
I was very pleased with the order. The coils arrived very quickly and the motor was running 1 hour after they arrived. They fit perfectly on the 1958 Evinrude 7.5 and it purrs like a kitten.
(5 of 8 people found this review helpful)
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works fine
by John from Woodbridge, Virginia on May 20, 2012
great price great product
(5 of 8 people found this review helpful)
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sierra products
by Jack from West Columbia, Texas on April 26, 2012
coils worked great-an exact match for my OEM coils.thanks for the prompt shipment
(5 of 10 people found this review helpful)
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ignition coil
by George from Lewisville, Texas on January 05, 2012
packeged well arrived promptly
(5 of 8 people found this review helpful)
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great price, good quality
by Mike from Winnipeg, Manitoba on November 20, 2011
Excellent price and quality...Now if they would only make them for my Johnson seahorse HD 25.....
(5 of 10 people found this review helpful)
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Fixed the problem perfectly!
by Samuel from Hannon, Ontario on September 12, 2011
The old coils were totally shot on my evinrude 1959 3 hp, replaced them with the new ones from Iboats with a new set of points and it runs beautiful again.
(6 of 9 people found this review helpful)
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Ignition coil by Sierra
by Peter from Lombard, Illinois on August 08, 2011
I recently purchased 2 coils to be used for my 18 Hp Evinrude and ended up not needing them at this time. I was very satisfied with the purchase process and the speed of delivery.
(6 of 9 people found this review helpful)
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ignition coils
by Barry from Point Roberts, Washington on June 12, 2011
both coils tested okay, installed perfectly my 3 HP is purring again
(6 of 11 people found this review helpful)
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Ignition coils
by Tim from Lakeside, Ontario on June 10, 2011
My purchase was shipped promptly and was packaged well. Competitively priced too, even with shipping, duty and taxes to Canada.
(6 of 9 people found this review helpful)
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great fix
by Christy from Cedartown, Georgia on June 10, 2011
worked like it should
(5 of 10 people found this review helpful)
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Review for Ignition Coil for Johnson/Evinrude 582995 584477, Mercury/Mariner 802371A1, GLM
by a Customer on January 15, 2009
Perfect match to 40yr old OEM parts. Delivery was on-time around 3:30 PM, had the distributor system torn down and put back together in less than an hour (I am a forester, not a mechanic)pulled the cord and found out just how HOT these coils are (note: never pull the cord while touching the plug wires HOT! HOT! HOT!) - Thanks, Mike
(16 of 20 people found this review helpful)
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Average Customer Review for Sierra 18-5186 - Ignition Coil
Full StarFull StarFull StarFull StarHalf Star
Based On 22 Reviews | Write Review
Full StarFull StarFull StarFull StarFull Star
Merc 150 black max ignition coils.
by Chip from Superior, Wisconsin on August 19, 2016
Sierra coils worked great. I finally fixed my problem. Highly recommend.
(34 of 56 people found this review helpful)
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price was good and fast shipping,very happy
by Vince from Terrace, British Columbia on July 14, 2016
have not installed yet but will soon
(34 of 59 people found this review helpful)
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Replacing coils as preventative maintenance
by Tim from Winston Salem, North Carolina on June 15, 2016
Good product, I bought and replaced all 6 for my 30 yr old Mercury XR2 Blackmax, as preventative maintenance. NO instructions included so I don't know what the extra cylinder included was for. I also purchased the ignition wire set 18-5225 and made my own plug wires. My engine runs great as it did before. I did keep the old original coils just in case. Fast service and convenient shopping for me.
(33 of 55 people found this review helpful)
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Ignition coil for Merc 100
by William from Sebastian, Florida on March 19, 2016
Arrived as expected. Will install next week!
(34 of 59 people found this review helpful)
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Yep, it sparks!
by George from Windsor, Colorado on September 30, 2015
Wish it had solved my problematic engine. Now I have another spare part. Another post said his did not come with the nuts for the screw terminals. Mine did come with them?
(33 of 54 people found this review helpful)
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40hp mariner coil
by Lewis from McComb, Mississippi on September 25, 2015
Well satisfied with fast service and quality product
(33 of 57 people found this review helpful)
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Good stuff!!
by Howard from Eupora, Mississippi on September 22, 2015
i ordered coils three times from two other suppliers. They arrived in bubble envelopes and the parts were broken. Not so here! Arrived quickly, well packed and got my big old mercury screaming again! Iboats and only iboats.
(32 of 53 people found this review helpful)
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Perfect fit
by Dave from Fennville, Michigan on August 24, 2015
Perfect fit and function in my motor.
(32 of 54 people found this review helpful)
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awesome product fast shipping but running great
by Dean from Sugarloaf, California on May 20, 2015
coils worked awesome but running great
(32 of 52 people found this review helpful)
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Thanks iboats
by Johnna from Burleson, Texas on May 09, 2015
I will never use another boat supply company as long as iboats is around. I'm an online buyer and the website design is flawless please don't change anything unless it's adding even more details about the part your looking for
(32 of 53 people found this review helpful)
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coils
by James from St. Charles, Missouri on October 18, 2013
everything was GREAT service and product
(32 of 55 people found this review helpful)
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ignition coil-sierra
by James from Casper, Wyoming on August 13, 2013
i replaced the coil and still get no spark for cyl. number 1,do u have anything else i could try? i dont know if the coil is defective
(34 of 54 people found this review helpful)
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Ignition coil
by Molly from Garner, North Carolina on August 11, 2013
Parts worked just great. Happy to be back in the water!
(30 of 49 people found this review helpful)
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Disappointed
by David from Dighton, Kansas on June 07, 2013
I got the new coil and the threads were different than the original coil. I live in a small town and there was no place open to get new nuts so I tried using the old ones anyway, broke one of the terminals off. My fault, shouldn't have tried it. It would be nice to send new nuts if the threads are different.
(30 of 49 people found this review helpful)
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ignition coil
by Donald from Douglas, Georgia on November 09, 2012
Just what I needed.Thanks for the fine quality parts that yall have to offer.
(31 of 50 people found this review helpful)
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coil shiping
by Robert from Dell Rapids, South Dakota on August 15, 2012
I thank you for the fast shipment,which gave me more fishing time
(29 of 48 people found this review helpful)
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great service
by Nelson from Drummonds, Tennessee on May 13, 2012
you have great pricesand fast service for your products,
(27 of 44 people found this review helpful)
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Coil
by Ronald from Phillipsburg, Missouri on March 17, 2012
Good service
(28 of 45 people found this review helpful)
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good
by Vicki from Lakeland, Florida on August 22, 2011
good part
(27 of 44 people found this review helpful)
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Ignition coil
by C from Ashland, New Hampshire on August 18, 2011
Received in a timely fashion.
(30 of 48 people found this review helpful)
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Great part - Works on older 7.5hp Mercruiser
by Jeff from Covington, Washington on July 06, 2011
I took a chance on this one, and it works great. Had a hard time finding my exact replacement number but this one did just fine.
(28 of 52 people found this review helpful)
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red
by Kevin from Spanish Fort, Alabama on March 25, 2011
Got to have fire
(27 of 50 people found this review helpful)
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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
(1 of 2 people found this review helpful)
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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.
(3 of 5 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.
(2 of 5 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.
(1 of 3 people found this review helpful)
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sierra coil
by Richard from Rushville, Indiana on June 03, 2011
Great product and thanks to Iboats I received it quickly. Thanks
(2 of 4 people found this review helpful)
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Q:
Will this work for a 1973 motor?
A:
It seems it is after 1973 but we can only confirm by knowing your HP and serial number. If you can provide that we can take a look.


Q:
Hi do you know if that product is for 2006 Mercury 2.5hp 4s?
A:
It will entirely depend on your serial number. We can only match it up with that. So call us at the number at the top of the page with the serial number and we can confirm.


Q:
Which spark plug wire goes with this coil for a 1981 2hp Evinrude?
A:
This is the correct coil for your engine. For your engine we only have the OEM version of the wire which is part number 0580146.


Q:
What are dimensions of the coil including the square hole?
A:
Sierra actually does not have that. We can only match it up by engine application.


Q:
Is this a single coil or will I need to purchase an additional coil for a 1959 Evinrude 18hp?
A:
This is a single coil.


Q:
Is this the coil to fit a 1947 Mercury KD-4S? If so do you also carry the condensers?
A:
The coil for your engine is 18-5178.


Q:
Will this work on a 1957 elgin 7.5hp?
A:
We do not have original information on that motor to confirm.


Q:
I want to use these in an Old fifties Seabee will they work they look like the right part my question is output of spark Voltage?
A:
Sierra does not have the output of spark voltage. They can only match up by specific application. Feel free to contact us at the number on the top of the page for more assistance.


Q:
What is the ohms reading on the secondary winding?
A:
The secondary winding to ground is about 300 ohms.


Q:
Will these work in my 1989 Force 50 hp model #507Y9B?
A:
No this will not work with your motor. You will need 182-4475R.


Q:
Have a 1981 50 hp Mercury SN: 5951883 will 18-5186 coil work?
A:
Yes it will work with your motor.


Q:
Can this replace3364409a?
A:
I don't cross reference that number. We only cross reference the following OEM numbers: 339-832757L4, 339-832757A4, 339-832757B4, 339-7370B13, 339-7370A13. If you need further assistance give us a call at 1-800-914-1123.


Q:
Would this work for a 1971 Chrysler 45 HP, Model 457HC?
A:
No this is not listed for your motor. We do not have the original information for your motor. You may have to contact an obsolete outboard parts dealer.


Q:
I have a 1980-82 70hp mercury SN 5754491. Are these the correct coils?
A:
Yes this is the correct coil for your motor.


Q:
Is this correct foe a 1971 9.8 mercury?
A:
No this will not work with your motor. Your OEM number is 336-4409A4.


Q:
I have a 1973 9.8hp 110 mercury . Iv been looking to see what kind of coils would be good for it. If you could please get back to me thanks?
A:
We do not offer one for your motor. Your OEM number is 336-4528T2.


Q:
Will this work for a 9.8hp Mercury SN 6197317?
A:
No it will not. You will need OEM number 339-5288T2.


Q:
I have a Chrysler 105 (1057HF). Is this the replacement coil? Thanx, Tim?
A:
We do not have an original list for that motor to confirm the correct ignition coil.


Q:
Will this work on a 40 hp 3 cyl 1998 mercury serial?
A:
We will need to know the serial number to confirm.


Q:
Will this coil work for a 1987 mariner 150hp outboard 2 stroke motor?
A:
It will work if it is a Mercury/Mariner and the serial number is lower than 0G760300.


Q:
My merc serial # 7162592 never comes up when im lookin for parts why is that? also... will these coils work with my motor its a 1980 1/2 mercury 80 hp?
A:
Well you serial number doesn't automatically pull up with Mercury either in a search. However, with that serial number we can go by ranges. The 18-5186 will work with your outboard.


Q:
Is this coil a replacement for Merc.?
A:
Yes it works with certain Mercury outboards. We will need to know your application.


Q:
Will this work on merc 500 serial # 2949899?
A:
No this will not work with your motor. Your OEM number was 332-4895A6. It is now obsolete.


Q:
Does this replace 339-5288 ?
A:
No this does not cross reference with that OEM number. The number may have been replaced but we would need a serial number to verify.


Q:
What is the ohms reading on a new coil mine has 240ohms and the old one i'm replacing is 840ohms and the shop manual states the reading should be 800-1000ohms so is my new one bad?
A:
Yes if it's reading outside that then you might have a defective coil.


Q:
Will this work for a 15 hp Gamefisher Model # 225581503 ?
A:
This will not work. You need 116-2379K2.


Q:
Is this interchangable with coil 332-4895? inline 6 150hp 1973 model?
A:
No this does not cross reference. You need OEM number 332-4895T2 for your motor.


Q:
What is that little cylinder that comes with the coil?
A:
Sierra said that depending on the application you might need to use it. You would take off the housing of the ignition coil and put it in there with a screw though it. They didn't have a name for it though.


Q:
I have a 45 horse Chrysler Golden oldie will this coil work?
A:
We do not have original information on that motor so we cannot guarantee it will work.


Q:
I have a 1979 70hp chrysler outboard. will this coil work for me?
A:
No it will not. You need OEM number F345475-2.


Q:
I have a 1967 mercruiser 160 hp 6 cylinder, I'm going to replace my coil and resistor what ohm resistor does this coil use is it 1.4 or 0.8?
A:
Primary Resistance: 1.550/.450 Ohms. Secondary Resistance: 9,370/7,650 Ohms. Inductance: 6.45/5.31 MHY. Those are the specs listed from Sierra. Requires external resistor.


Q:
It says OMC Cobra, which is what I have, but will it work for the 2.3 liter, 4 cylinder Ford (1989 mod)?
A:
This is not the correct part for that engine, the correct part number is, 18-5437.


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.


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