Ignitions and Electrical› Ignition Components

SIERRAMARINE

Delco HEI Spark Plug Wire Set

$107.62

SKU: S08C 18-8828-1

In Stock
In Stock
Ships by Aug 30
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Sierra Marine 18-8828-1 is a premium marine spark plug wire set designed for Delco HEI ignition systems. It features a Kevlar core for durability and superior RFI suppression to protect sensitive electronics. The set includes multiple pre-cut wire lengths for accurate fitment and routing.
Show original supplier description
The Sierra Marine 18-8828-1 premium spark plug wire set is engineered for reliable ignition performance in demanding marine environments. Designed specifically for Delco HEI ignition systems, these "Electronics Friendly" wires offer superior RFI suppression, safeguarding your GPS, VHF, and other sensitive onboard electronics from interference. Constructed with a durable Kevlar core, these wires are built to last. The set includes a variety of pre-cut wire lengths, such as (2) 22", (2) 27", and (2) 31", allowing for precise fitment and routing within your engine bay. They are designed to replace OEM part numbers like Mercruiser 84-863656A1, CDI 631-0011, and Mallory 9-28009. This wire set is specifically designed for MerCruiser 5.0L, 5.7L, and 6.2L MPI V8 engines, including those with ECM 555. It is also noted to fit specific 2001-09 5.0OSI models with a Delco HVS distributor. Please verify part number and specifications for proper fitment in your application.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandSIERRAMARINE
Part NumberS08C 18-8828-1
CategoryIgnitions and Electrical

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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