Sierra Wiring Plug Set - SIE-18-8820-1

Sierra 18-8820-1 Spark Plug Wiring Set

Sierra replacement spark plug wire set for 8 cylinder EST Electronic ignition.

Features:

Ignition Type: EST Electronic

Cyl.: 8

Kevlar core for maximum durability and long life

Durable stainless steel wound conductor for maximum horsepower and engine performance

Premium silicone jacketing and boots for the ultimate in high temperature protection

Superior RFI suppression for the most sensitive electronic system

Corrosion resistant stainless steel spark plug and distributor terminals for maximum conductivity

Lead Lengths:

2 Spark Wires 27"

1 Spark Wire 32"

2 Spark Wires 38"

3 Spark Wires 42"

1 Coil Wire 14"

Interchangeable With:

Mallory

9-28029

OMC Stern Drive

503754

Frequently Asked Questions

• What is the Sierra 18-8820-1 Spark Plug Wiring Set used for? The Sierra 18-8820-1 Spark Plug Wiring Set is a replacement spark plug wire set designed for 8-cylinder engines with EST electronic ignition. The set uses durable construction materials and components designed for high-temperature protection, conductivity, and RFI suppression in compatible marine ignition systems.
• What ignition system does the Sierra 18-8820-1 Spark Plug Wiring Set fit? The Sierra 18-8820-1 is specified for EST electronic ignition systems on 8-cylinder engines. The supplied product description does not identify specific engine models or years, so verify that your engine uses an 8-cylinder EST electronic ignition system before ordering.
• What wire lengths are included in the Sierra 18-8820-1 Spark Plug Wiring Set? The set includes two 27-inch spark plug wires, one 32-inch spark plug wire, two 38-inch spark plug wires, three 42-inch spark plug wires, and one 14-inch coil wire. These nine leads provide the specified wire lengths for the listed 8-cylinder EST electronic ignition application.
• What materials and features does the Sierra 18-8820-1 Spark Plug Wiring Set have? The wires feature a Kevlar core, stainless steel wound conductor, premium silicone jacketing and boots, and corrosion-resistant stainless steel spark plug and distributor terminals. The set also provides RFI suppression and high-temperature protection for compatible electronic ignition systems.
• Is the Sierra 18-8820-1 Spark Plug Wiring Set interchangeable with OMC parts? Yes. The Sierra 18-8820-1 is listed as interchangeable with OMC Stern Drive part number 503754. It is also interchangeable with Mallory part number 9-28029. Verify the existing wire set or applicable part number to help confirm compatibility.
• What should I verify before purchasing the Sierra 18-8820-1 Spark Plug Wiring Set? Verify that your engine has 8 cylinders and uses EST electronic ignition. Also compare the applicable existing wire set or part number with the listed interchange references, including OMC 503754 and Mallory 9-28029. The supplied description does not provide specific engine model or year fitment information.