Sierra 18-8822-1 Spark Plug Wire Set for Delco HEI Marine Engines

The Sierra 18-8822-1 is a premium replacement spark plug wire set designed for MerCruiser sterndrive engines equipped with Delco HEI (High Energy Ignition) systems. This complete wire set delivers reliable ignition performance in demanding marine environments.

Key Features:

• Kevlar core construction for maximum durability and extended service life
• Durable stainless steel wound conductor ensures maximum horsepower and engine performance
• Premium silicone jacketing and boots provide superior high-temperature protection
• Magnetic suppression core manufactured for specific marine applications
• Corrosion-resistant stainless steel terminals at spark plug and distributor connections
• Superior RFI (Radio Frequency Interference) suppression protects sensitive electronic systems
• OE-style boots create a sealed barrier against heat, dirt, and moisture
• 8mm wire diameter for optimal conductivity

Wire Specifications:

• 2 spark plug wires at 27.5 inches
• 2 spark plug wires at 30.5 inches
• 2 additional wires at varying lengths for complete coverage

This wire set replaces MerCruiser OEM parts 84-816608A81 and 84-816608Q81. Sierra marine parts are engineered to meet or exceed OEM specifications and are built to withstand the harsh conditions of marine use.