Ignitions and Electrical› Ignition Components

SIERRAMARINE

9-Inch Spark Plug Wire

$16.45

SKU: S08C 18-5231-1

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

Beginner — under 30 min

Overview

The Sierra Marine 18-5231-1 is a 9-inch spark plug wire designed for marine applications. It features a Kevlar core for durability and a stainless steel wound conductor for optimal engine performance. This wire connects the ignition coil to the spark plug.
Show original supplier description
The Sierra Marine 18-5231-1 is a 9-inch (228.6mm) spark plug wire engineered to connect your ignition coil to the spark plug. It is constructed with a durable Kevlar core, ensuring maximum longevity and resistance to wear. This spark plug wire is a direct replacement part, intended to provide a perfect fit for easy installation. Its construction utilizes premium silicone materials for reliable performance in marine environments. This product is described as universal and does not have specific fitment assigned to a particular vehicle. It is sold individually and is compatible with Johnson and Evinrude outboard engines.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandSIERRAMARINE
Part NumberS08C 18-5231-1
CategoryIgnitions and Electrical

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy