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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
[out of stock]
 
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

$26.99 - Sierra 18-8800 Wire Lead Kit
Compare at $31.99
Part # 18-8800
$35.99 - Sierra 18-8801 Premium Marine Spark Plug Wires
Compare at $41.99
Part # 18-8801
$40.99 - Sierra 18-8802 Lead Wire Kit
Compare at $47.49
Part # 18-8802
$41.99 - Sierra 18-8803-1 Wire Lead Kit
Compare at $48.49
Part # 18-8803-1
$42.99 - Sierra Wire Lead Kit, MC#84-813720A2, 84-813720A3, 84-813720A4
Compare at $49.99
Part # 18-8804
$33.99 - Sierra 18-8808 Lead Wire Kit
Compare at $38.99
Part # 18-8808
$35.99 - Sierra 18-8809
Compare at $41.99
Part # 18-8809
$33.99 - Sierra 18-8810 Premium Marine Spark Plug Wire Set
Compare at $39.99
Part # 18-8810
$28.99 - Sierra 18-8811
Compare at $32.99
Part # 18-8811
$45.99 (Out of stock) - Sierra 18-8821-1 Wiring, Plug Set
Compare at $52.99
Part # 18-8821-1
$71.99 (Out of stock) - Sierra 18-8828-1 Wiring, Plug Set
Compare at $82.99
Part # 18-8828-1
$71.99 - Sierra 18-8829-1 Wiring, Plug Set
Compare at $82.99
Part # 18-8829-1
$49.99 - Sierra 18-8830-1 Wiring, Plug Set
Compare at $57.49
Part # 18-8830-1
$48.99 - Sierra 18-8832-1 Wiring, Plug Set
Compare at $56.49
Part # 18-8832-1
$29.99 - Sierra 18-8833-1 Wiring, Plug Set
Compare at $34.99
Part # 18-8833-1
$49.99 (Out of stock) - Sierra 18-8834-1 Wiring, Plug Set
Compare at $57.49
Part # 18-8834-1
$42.99 - Sierra 18-8835-1 Wiring, Plug Set
Compare at $49.99
Part # 18-8835-1
$49.99 - Sierra 18-8836-1 Wiring, Plug Set
Compare at $57.49
Part # 18-8836-1
$315.99 - Sierra 18-8838-1 Wiring, Plug Set
Compare at $369.00
Part # 18-8838-1
$31.99 - Mallory Plug Wire Set 9-28020
Compare at $36.23
Part # 9-28020
$48.99 - Mallory Plug Wire Set 9-28017
Compare at $56.91
Part # 9-28017
$38.99 - Mallory Plug Wire Set 9-28016
Compare at $45.47
Part # 9-28016
$41.99 - Mallory Plug Wire Set 9-28015
Compare at $48.49
Part # 9-28015
$37.99 (Out of stock) - Mallory Plug Wire Set 9-28014
Compare at $43.20
Part # 9-28014
$30.99 - Mallory Plug Wire Set 9-28004
Compare at $35.69
Part # 9-28004
$46.99 - Mallory Plug Wire Set 9-28003
Compare at $54.33
Part # 9-28003
$46.99 - Mallory Plug Wire Set 9-28002
Compare at $54.13
Part # 9-28002
$46.99 - Mallory Plug Wire Set 9-28001
Compare at $54.13
Part # 9-28001
$46.99 - Mallory Plug Wire Set 9-28000
Compare at $54.33
Part # 9-28000
Sierra
Mercruiser Premium Spark Plug Wire Kits 18-8800 Wire Lead Kit
Sierra 18-8800 Wire Lead Kit
Lead Wire Kit
Electrical System

Mercruiser Premium Spark Plug Wire Kits 18-8801 Premium Marine Spark Plug Wires
Sierra 18-8801 Premium Marine Spark Plug Wires
Lead Wire Kit
Electrical System
For: 262/4.3L w/conventional ignition

Mercruiser Premium Spark Plug Wire Kits 18-8802 Lead Wire Kit
Sierra 18-8802 Lead Wire Kit


Mercruiser Premium Spark Plug Wire Kits 18-8803-1 Wire Lead Kit
Sierra 18-8803-1 Wire Lead Kit
For: 502/8.2L with conventional ingition

Mercruiser Premium Spark Plug Wire Kits Wire Lead Kit, MC#84-813720A2, 84-813720A3, 84-813720A4
Sierra Wire Lead Kit, MC#84-813720A2, 84-813720A3, 84-813720A4
Part # 18-8804


Mercruiser Premium Spark Plug Wire Kits 18-8808 Lead Wire Kit
Sierra 18-8808 Lead Wire Kit


Mercruiser Premium Spark Plug Wire Kits 18-8809
Sierra 18-8809
Lead Wire Kit
Electrical System

Yamaha Sterndrive Premium Spark Plug Wire Kits 18-8810 Premium Marine Spark Plug Wire Set
Sierra 18-8810 Premium Marine Spark Plug Wire Set
Lead Wire Kit
Electrical System
For: 262/4.3L with EST or EFI ignition

Mercruiser Premium Spark Plug Wire Kits 18-8811
Sierra 18-8811
Lead Wire Kit
Electrical System

Sierra 18-8821-1 Wiring, Plug Set
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


Sierra 18-8828-1 Wiring, Plug Set
Replaces OEM part #
  • MERCURY MARINE 84-863656A1
  • MERCURY MARINE 84-863656A1


Sierra 18-8829-1 Wiring, Plug Set
Replaces OEM part #
  • MERCURY MARINE 84-863656A2


Sierra 18-8830-1 Wiring, Plug Set
Replaces OEM part #
  • MERCURY MARINE 84-816608Q80


Sierra 18-8832-1 Wiring, Plug Set
Replaces OEM part #
  • MERCURY MARINE 84-816608K68
  • MERCURY MARINE 84-816608K68


Sierra 18-8833-1 Wiring, Plug Set
Replaces OEM part #
  • MERCURY MARINE 84-816761K14
  • MERCURY MARINE 84-916761K14
  • MERCURY MARINE 84-816761K14
  • MERCURY MARINE 84-916761K14


Sierra 18-8834-1 Wiring, Plug Set
Replaces OEM part #
  • MERCURY MARINE 84-816608Q83
  • MERCURY MARINE 84-816608Q83


Sierra 18-8835-1 Wiring, Plug Set
Replaces OEM part #
  • MERCURY MARINE 84-816608Q82
  • MERCURY MARINE 84-816608Q82


Sierra 18-8836-1 Wiring, Plug Set
Replaces OEM part #
  • MERCURY MARINE 84-816608Q71
  • MERCURY MARINE 84-816608Q71


Sierra 18-8838-1 Wiring, Plug Set
Replaces OEM part #
  • MERCURY MARINE 84-881698
For: 496/8.1L with distributorless ignition systems

 
Mallory Plug Wire Set 9-28020
Replaces Original Equipment Manufacturer(OEM):Merc / OMC
Replaces Original Equipment Manufacturer # (OEM #):84-816761Q5 / 84-813720A5 / 503748
Fits Application:4 cyl.

 
Mallory Plug Wire Set 9-28017
Replaces Original Equipment Manufacturer(OEM):Chriscraft, Crusader, Mercruiser,OMC
Replaces Original Equipment Manufacturer # (OEM #):84-813720A8
Fits Application:Inline 6 cyl

 
Mallory Plug Wire Set 9-28016
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):84-813720A11
Fits Application:V-6

 
Mallory Plug Wire Set 9-28015
Replaces Original Equipment Manufacturer(OEM):Crusader. OMC, PCM,
Replaces Original Equipment Manufacturer # (OEM #):N/A
Fits Application:V-6

 
Mallory Plug Wire Set 9-28014
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):84-813720A6
Fits Application:4 cyl

 
Mallory Plug Wire Set 9-28004
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):N/A
Fits Application:4 cyl. Digital

 
Mallory Plug Wire Set 9-28003
Replaces Original Equipment Manufacturer(OEM):Merc / OMC
Replaces Original Equipment Manufacturer # (OEM #):84-816761Q12 / 84-813720A12 / 503755
Fits Application:8 cyl.

 
Mallory Plug Wire Set 9-28002
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

 
Mallory Plug Wire Set 9-28001
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

 
Mallory Plug Wire Set 9-28000
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.

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; after all, 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 that all Canadian customers verify and re-check that the products you are ordering are what you want and are correct for your application or intended use. iboats.com does not accept any return merchandise on Canadian orders, unless the merchandise you received was defective, damaged, or an error was made by iboats.com. In such cases, return the merchandise within 30 days of the original shipping date for a full refund, following the procedures below.

Canadian orders involve many additional costs dealing with Customs, Provincial taxes, brokerage fees, and more, making product returns complicated and very expensive and costly for both the customer and iboats.com. Again, help us serve you best by verifying that the products you are ordering are what you want so we don't have any costly returns or have to deny a return.

If a return meets the criteria mentioned above, merchandise must still be in brand-new, unused condition with all original packaging in good condition; all 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 call our Customer Service Department toll-free at 1-800-914-1123, Tuesday-Friday, 10am-7pm EST, or email us at returns@iboats.com. We will provide further details on where and how to mail the merchandise. Please note that returns sent from rural Canadian addresses may take up to five weeks to process after the package is mailed.

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