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CID/ Liter/ Model# Cyl. Ignition Type Spark Plug Wire Set Mallory Plug Wire Set
All 4 Digital 18-8811 9-28004
120(153 CID) 4 Conventional 18-8800 9-28020
140(181 CID) 4 Conventional 18-8800 9-28020
150 L6 Conventional 18-8809 9-28017
160 L6 Conventional 18-8809 9-28017
165 L6 Conventional 18-8809 9-28017
185 CID V6 Conventional 18-8801 9-28015
198 GM 8 Conventional 18-8803-1 9-28000
224 CID 4 Conventional 18-8808 9-28014
[out of stock]
225 FORD 8 Conventional 18-8803-1 9-28000
225 GM 8 Conventional 18-8803-1 9-28000
228 GM 8 Conventional 18-8803-1 9-28000
229 CID V6 Conventional 18-8801 9-28015
233 FORD 8 Conventional 18-8803-1 9-28000
250 GM 8 Conventional 18-8803-1 9-28000
255 FORD 8 Conventional 18-8803-1 9-28000
260 GM 8 Conventional 18-8803-1 9-28000
260 TR 8 Thunderbolt 18-8804 9-28001
262 CID V6 Thunderbolt 18-8810 9-28016
280 GM 8 Conventional 18-8803-1 9-28000
305 CID LH 8 Thunderbolt 18-8804 9-28001
305 CID RH 8 Thunderbolt 18-8804 9-28001
320 EFI 8 Thunderbolt 18-8804 9-28001
330 8 Conventional 18-8803-1 9-28000
330 TR 8 Thunderbolt 18-8804 9-28001
350 CID LH 8 Thunderbolt 18-8804 9-28001
350 CID RH 8 Thunderbolt 18-8804 9-28001
350 MAG 8 Thunderbolt 18-8804 9-28001
350 MAG Ski 8 Thunderbolt 18-8821-1
[out of stock]
 
350 MAG Bravo MPI & Gen + 8 Delco HEI 18-8836-1  
350 MAG MPI MIE (Gen +) 8 Delco HEI 18-8832-1  
350 MAG MPI MIE (Gen +) 8 Mercury HEI 18-8834-1
[out of stock]
 
350 MAG EFI Ski 8 Delco HEI 18-8832-1  
350 MAG MPI Ski (Gen +) 8 Delco HEI 18-8836-1  
350 Black Scorpion Ski (Gen +) 8 Delco HEI 18-8832-1  
370 8 Conventional 18-8803-1 9-28000
400 8 Conventional 18-8803-1 9-28000
420 8 Thunderbolt 18-8804 9-28001
440 8 Conventional 18-8803-1 9-28000
454 CID 8 Thunderbolt 18-8804 9-28001
454 MAG 8 Thunderbolt 18-8804 9-28001
454 EFI, MAG MPI & Horizon MIE 8 Delco HEI 18-8832-1  
454 Hi Performance 8 Thunderbolt 18-8824-1  
454 8 Thunderbolt 18-8824-1  
460 8 Conventional 18-8803-1 9-28000
496 8 Distributorless 18-8838-1  
502 MAG 8 Delco HEI 18-8832-1  
502 EFI & MAG MPI 8 Delco HEI 18-8832-1  
888 FORD 8 Conventional 18-8803-1 9-28000
898 GM 8 Conventional 18-8803-1 9-28000
2.5L 4 Conventional 18-8800 9-28020
3.0L 4 Conventional 18-8800 9-28020
3.0LX 4 Delco EST 18-8833-1  
3.7L 4 Conventional 18-8808 9-28014
[out of stock]
3.7XL 4 Conventional 18-8808 9-28014
[out of stock]
4.3L V6 Thunderbolt 18-8810 9-28016
4.3XL V6 Thunderbolt 18-8810 9-28016
4.3L EFI(TBI) V6 Delco HEI 18-8835-1  
4.3L MPI V6 Delco HEI 18-8829-1  
5.0L 8 Thunderbolt 18-8804 9-28001
5.0L IB 8 Thunderbolt 18-8804 9-28001
5.0LX 8 Thunderbolt 18-8804 9-28001
5.0L Alpha & Bravo(Gen +) 8 Thunderbolt 18-8821-1
[out of stock]
 
5.0L MIE MPI 8 Delco HEI 18-8828-1  
5.7L 8 Thunderbolt 18-8804 9-28001
5.7L IB 8 Thunderbolt 18-8804 9-28001
5.7L SKI 8 Conventional 18-8802 9-28003
5.7 Alpha/Bravo 8 Thunderbolt 18-8821-1
[out of stock]
 
7.4L 8 Thunderbolt 18-8804 9-28001
7.4L IB 8 Thunderbolt 18-8804 9-28001
8.1L 8 Distributorless 18-8838-1  
CID/ Liter/ Model# Cyl. Ignition Type Spark Plug Wire Set Mallory Plug Wire Set

mercruiser premium spark plug wire kits-sierra 18-8800 wire lead kit

Our Price: $26.99
Compare at $31.99



Lead Wire Kit
Electrical System

mercruiser premium spark plug wire kits-sierra 18-8801 premium marine spark plug wires

Our Price: $35.99
Compare at $41.99



Lead Wire Kit
Electrical System
For: 262/4.3L w/conventional ignition

mercruiser premium spark plug wire kits-sierra 18-8802 lead wire kit

Our Price: $40.99
Compare at $47.49



mercruiser premium spark plug wire kits-sierra 18-8803-1 wire lead kit

Our Price: $41.99
Compare at $48.49



For: 502/8.2L with conventional ingition

mercruiser premium spark plug wire kits-sierra wire lead kit, mc#84-813720a2, 84-813720a3, 84-813720a4

Our Price: $42.99
Compare at $49.99



Part # 18-8804

mercruiser premium spark plug wire kits-sierra 18-8808 lead wire kit

Our Price: $33.99
Compare at $38.99



mercruiser premium spark plug wire kits-sierra 18-8809

Sierra 18-8809
Part # 18-8809
Our Price: $35.99
Compare at $41.99



Lead Wire Kit
Electrical System

yamaha sterndrive premium spark plug wire kits-sierra 18-8810 premium marine spark plug wire set

Our Price: $33.99
Compare at $39.99



Lead Wire Kit
Electrical System
For: 262/4.3L with EST or EFI ignition

mercruiser premium spark plug wire kits-sierra 18-8811

Sierra 18-8811
Part # 18-8811
Our Price: $28.99
Compare at $32.99



Lead Wire Kit
Electrical System

Our Price: $45.99 (Out of stock)
Compare at $52.99



Replaces OEM part #

  • MERCURY MARINE 84-813720A3
  • MERCURY MARINE 84-813720A4
  • MERCURY MARINE 84-816761A4
  • MERCURY MARINE 84-816761Q17
  • MERCURY MARINE 84-816761Q3
  • MERCURY MARINE 84-816761Q4
  • MERCURY MARINE 84-816761Q4
  • MERCURY MARINE 84-813720Q3
  • MERCURY MARINE 84-813720Q4
  • MERCURY MARINE 84-813720A3
  • MERCURY MARINE 84-813720A4
  • MERCURY MARINE 84-816761A4
  • MERCURY MARINE 84-816761Q17
  • MERCURY MARINE 84-816761Q3
  • MERCURY MARINE 84-816761Q4
  • MERCURY MARINE 84-816761Q4

 

Our Price: $71.99
Compare at $82.99



Replaces OEM part #

  • MERCURY MARINE 84-863656A1
  • MERCURY MARINE 84-863656A1

Our Price: $71.99
Compare at $82.99



Replaces OEM part #

  • MERCURY MARINE 84-863656A2

Our Price: $49.99
Compare at $57.49



Replaces OEM part #

  • MERCURY MARINE 84-816608Q80

Our Price: $48.99
Compare at $56.49



Replaces OEM part #

  • MERCURY MARINE 84-816608K68
  • MERCURY MARINE 84-816608K68

Our Price: $29.99
Compare at $34.99



Replaces OEM part #

  • MERCURY MARINE 84-816761K14
  • MERCURY MARINE 84-916761K14
  • MERCURY MARINE 84-816761K14
  • MERCURY MARINE 84-916761K14

Our Price: $49.99 (Out of stock)
Compare at $57.49



Replaces OEM part #

  • MERCURY MARINE 84-816608Q83
  • MERCURY MARINE 84-816608Q83

 

Our Price: $42.99
Compare at $49.99



Replaces OEM part #

  • MERCURY MARINE 84-816608Q82
  • MERCURY MARINE 84-816608Q82

Our Price: $49.99
Compare at $57.49



Replaces OEM part #

  • MERCURY MARINE 84-816608Q71
  • MERCURY MARINE 84-816608Q71

Our Price: $315.99
Compare at $369.00



Replaces OEM part #

  • MERCURY MARINE 84-881698
For: 496/8.1L with distributorless ignition systems

 

Our Price: $31.99
Compare at $36.23



Replaces Original Equipment Manufacturer(OEM):Merc / OMC
Replaces Original Equipment Manufacturer # (OEM #):84-816761Q5 / 84-813720A5 / 503748
Fits Application:4 cyl.

 

Our Price: $48.99
Compare at $56.91



Replaces Original Equipment Manufacturer(OEM):Chriscraft, Crusader, Mercruiser,OMC
Replaces Original Equipment Manufacturer # (OEM #):84-813720A8
Fits Application:Inline 6 cyl

 

Our Price: $38.99
Compare at $45.47



Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):84-813720A11
Fits Application:V-6

 

Our Price: $41.99
Compare at $48.49



Replaces Original Equipment Manufacturer(OEM):Crusader. OMC, PCM,
Replaces Original Equipment Manufacturer # (OEM #):N/A
Fits Application:V-6

 

Our Price: $37.99 (Out of stock)
Compare at $43.20



Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):84-813720A6
Fits Application:4 cyl

 
 

Our Price: $30.99
Compare at $35.69



Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):N/A
Fits Application:4 cyl. Digital

 

Our Price: $46.99
Compare at $54.33



Replaces Original Equipment Manufacturer(OEM):Merc / OMC
Replaces Original Equipment Manufacturer # (OEM #):84-816761Q12 / 84-813720A12 / 503755
Fits Application:8 cyl.

 

Our Price: $46.99
Compare at $54.13



Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):84-816761Q4
Fits Application:V-8 454-572 w/ Thunderbolt & 90 deg. Plug Boots

 

Our Price: $46.99
Compare at $54.13



Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):84-816761Q4
Fits Application:V-8 305/350 (LH) 1981-95 w/ Thunderbolt IV

 

Our Price: $46.99
Compare at $54.33



Replaces Original Equipment Manufacturer(OEM):Merc / OMC / Volvo
Replaces Original Equipment Manufacturer # (OEM #):84-816761Q10 / 84-813720A10 / 503752
Fits Application:V-8 454/482 1977-85 w/points and 1961-81 w/Thunderbolt Ign.

 

Our Price: $50.99
Compare at $58.66



Replaces Original Equipment Manufacturer(OEM):Mercruiser
Fits Application:8 cyl. Delco HEI

 

Our Price: $49.99
Compare at $57.40



Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):84-816608A80
Fits Application:5.7L MIE & Ski 1998- newer

 

Our Price: $39.99
Compare at $46.62



Replaces Original Equipment Manufacturer(OEM):Mercruiser, Crusader, OMC, Volvo
Replaces Original Equipment Manufacturer # (OEM #):84-813720A7 / N/A / 503750
Fits Application:V-6 229 3.8L

 

Our Price: $51.99
Compare at $59.80



Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):N/A
Fits Application:V-8 396-572cid w/ 180 deg. Plug boots

 

Our Price: $31.99
Compare at $36.23



Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):84-816761Q14
Fits Application:3.0L/LX 1990 & newer w/Delco EST ignition

 

Our Price: $47.99
Compare at $55.18



Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):84-813720A9
Fits Application:8 cyl.

 

Our Price: $48.99
Compare at $56.77



Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):84-816608A82
Fits Application:V-6 w/ Delco HEI

 

Our Price: $51.99
Compare at $60.32



Replaces Original Equipment Manufacturer(OEM):Ford Marine, Mercruiser
Fits Application:V-8 302,351,460 w/135 deg. Plug boots

Sierra

This product typically leaves our warehouse in 1 business day.

To determine the shipping cost and estimated delivery date for this item click Add to Cart, then click Calculate Shipping inside your shopping cart.

General Policy

We work hard to provide you with the best value in product prices and shipping charges, and to get your order to you in a timely, safe, and convenient manner. Internet sales involve the cost of getting the product to you, and shipping carriers base that cost on the size and weight of the package, plus the distance the package travels from our warehouse to your door. We keep our product prices low, negotiate low shipping charges from our carriers and pass those savings on to you, and we don't charge sales tax (except for residents of Utah), so your order from iboats.com is the best value for all your boating needs.

Our standard shipping method is UPS ground, which typically takes 2-5 additional transit days after the order has left our warehouse, depending on your delivery address. We also offer other shipping options, including expedited delivery, and the actual delivery date will depend on the shipping options you choose.

Shipping to Canada

Most products sold by iboats.com can be purchased and shipped to Canada. Some restrictions apply to certain items, such as hazardous materials, over-weight products, and the method of shipping. Available product lines, shipping rates and fees may vary depending on the delivery address for your order.

Currently, iboats.com offers ground shipping to all Canada provinces. Our Canadian brokerage service accelerates your orders through the Customs clearance process and facilitates the delivery of your order through Canada Post or the best method based on your shipping address. We do not currently offer expedited shipping methods to Canada.

At iboats.com we want to simplify your transaction and give you a pleasing purchasing experience so you'll come shop with us again and again. We therefore calculate all the duties, taxes, and other fees specific to Canadian orders and show you the total landed cost of getting the order to your door. There are no hidden fees and will be no surprise COD charges when the package is delivered to you.

Order History & Tracking

We provide several methods to track your order and keep you informed of your order status and expected delivery date. After completing an iboats.com purchase transaction, an account will automatically be created for your provided email address. You'll receive an email from iboats.com Customer Service informing you of your new User Account and the many benefits it provides. If you don't wish to have an iboats.com Account with password, do nothing and your account won't be registered; however, you can respond to the instructions in the email and easily register your account and setup a password. This will allow you to sign in to your account by choosing the Order Status link from any iboats.com page, where you can browse your order history and track the status of all your orders - tracking numbers are displayed that link to the delivery carrier's tracking webpage.

If you have provided your email address during checkout, we will also email you your invoice, which includes a link for tracking your order and viewing the current status of your order. Refer to your invoice email and tracking link any time you wish to track the status of your order

Friendly Return Policy

  • If the merchandise you received was defective, damaged, or an error was made by iboats.com, simply return the merchandise within 30 days of the original shipping date for a full refund.
  • See the specific requirements and instructions below for United States or Canadian orders.

Returns for U.S. Customers

We want to make it as easy as possible for you to return an unwanted item; afterall, we want you to return again and again as a satisfied iboats.com customer, and to also continue recommending us to your friends.

As mentioned above, if the merchandise you received was defective, damaged, or an error was made by iboats.com, simply return the merchandise within 30 days of the original shipping date for a full refund. Merchandise must still be in brand-new, unused condition with all original packaging in good condition; plus parts, accessories, manuals, and/or warranty cards included. Please note that all return merchandise must be accompanied by an RA (Return Authorization) number issued by iboats.com. To receive your RA number simply call our Returns Department toll-free at 1-800-914-1123 or email us at returns@iboats.com.

If for some reason you need to return merchandise for reasons other than those mentioned above, follow the same procedures, obtaining an RA number from iboats.com, within 30 days of the original shipping date. Please note that there may be restocking fees, shipping costs, or product change order costs associated with some returns. Feel free to check with the iboats.com Returns Department for specific terms, conditions, and eligibility.

Returns for Canadian Customers

We request t